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Researchers enhance safety of lithium batteries with graft polymerization technique

Structure-Of-Steel

Li ion customized battery packs are a widely used class of rechargeable batteries in today’s world. One of the processes that can hamper the functioning of these batteries is an internal short circuit caused by direct contact between the cathode and anode (the conductors that complete the circuit within a battery).

To avoid this, separators composed of polyolefins—a type of polymer—can be employed to maintain separation. However, these separators can melt at higher temperatures, and the inadequate absorption of electrolytes (essential for conveying charges between electrodes) can result in short circuits and diminished efficiency. To tackle these issues, several different methods have been proposed.

One such method is to apply ceramic coatings on the separators to improve the way they handle pressure and heat. However, this can increase the thickness of the separators, reduce their adhesion, and harm battery performance. Another technique is to use polymer coatings, in a process known as graft polymerization. This involves the attachment of individual units (monomers) to the separators to give them the desired qualities.

A recent study published in Energy Storage Materials now demonstrates successful graft polymerization on a polypropylene (PP) separator, incorporating a uniform layer of silicon dioxide (SiO2). The discovery is the result of a joint study that including Assistant Professor Jeongsik Yun from the Department of Energy and Chemical Engineering at Incheon National University.

Dr. Yun was motivated by the need for high-performance battery materials in electric vehicles to achieve longer driving ranges, an area he has been actively working on. Beyond improving battery performance, his goal is to ease consumer concerns about battery explosions, potentially influencing their decisions to embrace electric vehicles.

According to him, “Battery explosions are frequently initiated from the melting of a separator. The commercial battery separator is made of polyolefins, a class of polymers which are vulnerable to heat. We therefore aimed to improve the thermal stability of the commercial separators by coating them with thermally robust materials such as SiO2 particles.”

In this study, a PP separator was modified in several ways. Initially, it was coated with a layer of polyvinylidene fluoride, a chemical chosen to enhance electrolyte affinity and thermal stability, while also introducing grafting reaction sites. Then, the separator underwent grafting with methacrylate molecules, followed by a final coating with SiO2 particles. These modifications made the separator stronger and more resistant to heat, suppressed the growth of lithium dendrites, and helped improve the cycling performance.

The modifications not only preserved the energy storage of li ion customized battery packs per unit volume, but also outperformed other coating methods in cell performance. This technique thus shows promise for creating robust separators and advancing the use of li ion customized battery packs in electric vehicles and energy storage systems.

“We hope that the results of this study can enable the development of high-safety lithium batteries. We believe that the thermal stability of these batteries will greatly benefit the current fire-sensitive electric vehicle field. In the long term, this can motivate people to choose electric vehicles and in urban areas, reduce the suffering of people from breathing in the polluted air generated by the internal combustion engines,” envisions Dr. Yun.

In summary, this study presents a reliable method for creating an innovative and durable separator for lithium-ion batteries, potentially paving the way for a greener future.

More information: Jaewon Park et al, Ultra-thin SiO2 nanoparticle layered separators by a surface multi-functionalization strategy for Li-metal batteries: Highly enhanced Li-dendrite resistance and thermal properties, Energy Storage Materials (2023). DOI: 10.1016/j.ensm.2023.103135

Provided by Incheon National University

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Advanced Li-ion battery

LiTypes of Lithium-ion

Fundamental degradation mechanism of Ni-rich layered cathodes on li ion customized battery packs

Increasing of the Ni fraction increase the discharge capacity of the cathode but decreases the ability to retain its original capacity during cycling. The relatively inferior cycling stability of NCM with x > 0.8 is attributed to the phase transition near the charge-end. Stress stemming from the H2 to H3 phase transition destabilized the internal microcracks and allowed the microcracks to propagate to the surface, providing channels for electrolyte penetration and subsequent degradation of the exposed internal surfaces.

Concentration gradient cathode materials for advanced li ion customized battery packs

NCM cathodes with concentration gradients represent a viable solution that simultaneously addresses the specific energy density, cycling and chemical stability, and safety issues of Ni-enriched NCM cathodes. Currently, concentration gradient cathode with extremely high Ni content has been developed by X-doping. Interdiffusion and coarsening in the X-doped CG cathode were suppressed by the segregation of X at the grain boundary and particle surfaces, which also provided a protective coating layer that lowered the surface reactivity.

Microstructurally modified cathodes by high valence electron elements doping

Specific dopants, especially high-valence elements can change the morphology of primary particles in Ni-rich cathode materials. The introduction of a high- valence element during calcination effectively reduces the size of the grains and refines the morphology of primary particles into rod-shaped ones by inhibiting the coarsening of particles. The superior cycling stability clearly indicates the importance of the particle microstructure (i.e., particle size, particle shape, and crystallographic orientation) in mitigating the abrupt internal strain caused by phase transitions in the deeply charged state, which occur in Ni-rich layered cathodes.

Effects of low valence elements excess doping in microstructure

The grain size refinement can be achieved by the introduction of an excess amount of Al doping, which inhibits particle coarsening by segregating Al ions at the particle boundaries. A highly aligned microstructure is achieved by doping 4 mol% of Al, which can allow uniform contraction of the primary particles in the deeply charged state, preventing the formation of local stress concentrations, and deflecting the propagation of microcracks. The proposed Al 4mol%-doped NCA cathode represents a new breed of a Ni-rich NCA cathode that can meet the energy density required for the next-generation EVs without compromising the battery life and safety.

Li-ion

Advanced Co-free cathode

The elimination of Co from Ni-rich layered cathodes is considered a priority to reduce their material cost and for sustainable development of  li ion customized battery packs as Co is becoming increasingly scarce. In the Co-free cathode, the H2-H3 phase transition occurring near the charge end is shifted to a high voltage, so the capacity is lower than that of the NCM cathode at the standard operating voltage (4.3V). However, when operated at high voltage(4.4V), it shows improved thermal stability and cycling stability due to high Mn contents, while exhibiting capacity similar to that of NCM cathode.

Introducing High-Valence Elements into Co-free NM Cathodes(micro-, nano- structure enegineering)

By doping high-valence elements into the Co-free cathodes, the electrochemical performances of the cathodes can be further extended. The grain size refinement achieved by X-doping (X=high-valence element) dissipates the deleterious strain from abrupt lattice contraction through fracture toughening and the removal of local compositional inhomogeneities. Also, the unique structure induced by the presence of X stabilizes the delithiated structure through a pillar effect. The X-doped NM90 cathode can deliver a high capacity with cycling stability, and is suitable for the electric vehicles with long service life at a reduced material cost.

Source：

http://escml.hanyang.ac.kr/sub/sub01_02.php

If you have any question, please feel free to contact us:

  • Name: Dawn Zeng (Director)
  • E-mail address: sales@himaxelectronics.com
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5V Batteries in Medical Devices: Enhancing Healthcare through Portable Power

5v battery

With the continuous advancement of science and technology, the development of medical equipment increasingly relies on advanced electronic technology. Because of their low voltage, light weight and portability, 5V batteries have become an ideal power source choice in the medical field, especially for driving small electronic components and portable medical equipment. They can provide reliable power to equipment and enhance patient care and medical equipment. of portability. Here are some examples of medical devices using 5V batteries:

Portable Monitors

Devices that measure and display vital signs such as blood pressure, heart rate, and oxygen saturation may use 5V batteries for their portability and efficient power consumption.

5v Portable Monitors

Blood Glucose Meters

Many glucose meters, used by individuals with diabetes to monitor their blood sugar levels, are designed to be compact and portable. Some of these devices utilize 5V batteries.

5v Blood Glucose Meters

Thermometers

Electronic thermometers, especially those designed for home use, may incorporate 5V batteries to power the temperature sensing and display components.

5v Thermometer

Infusion Pumps

Some types of infusion pumps, which deliver fluids, including medications or nutrients, to a patient’s body, may use 5V batteries for their control systems.

5v Infusion Pumps

Handheld Diagnostic Devices

Certain handheld diagnostic devices, like point-of-care testing equipment, may rely on 5V batteries to power their electronic components.

5v Handheld Diagnostic Devices

It’s important to note that the specific voltage requirements can vary between different devices. If you would like to inquire about battery solutions for medical portable devices, please feel free to contact us.

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The Ins and Outs of Car Batteries

new energy battery

A comprehensive guide to car batteries, including common voltage and capacity ratings, as well as their various applications and importance in today’s world.

Tags:

  1. Introduction
  2. Common Voltages and Capacities
  3. Application Areas
  4. Importance in Modern Society
  5. Conclusion

 

  1. Introduction

The car battery, often overlooked and taken for granted, is a crucial component of any vehicle. It provides the initial burst of power needed to start the engine, as well as maintaining the electrical systems while the engine is running. In this article, we delve into the inner workings of car batteries, discussing common voltage and capacity ratings, their various applications, and their significance in today’s world.

  1. Common Voltages and Capacities

The voltage and capacity of a car battery determine its performance and longevity. A car battery typically has a voltage rating between 12 and 16 volts. The most common voltage ratings are 12 volts, which is standard for most cars, and 16 volts, which is often found in higher-end vehicles or those with electrical needs beyond the norm.

When it comes to capacity, or how much energy a battery can store, batteries are typically measured in ampere-hours (Ah). Common ratings range from 35 Ah to 100 Ah, with most passenger vehicles equipped with batteries in the 50-60 Ah range. The higher the Ah rating, the longer the battery can supply power before recharging.

  1. Application Areas

Car batteries are used in a wide range of applications, from starting the vehicle’s engine to powering auxiliary electrical systems. They supply the initial burst of power needed to turn over the engine, allowing it to begin running. Once the engine is running, the alternator takes over the role of charging the battery while also powering the vehicle’s electrical systems, such as the lights, radio, and climate control.

In addition to their primary function, car batteries also provide backup power in case the engine stops running or the alternator fails. This ensures that the vehicle’s electrical systems can continue to operate, even in an emergency situation.

  1. Importance in Modern Society

In today’s world, where vehicles are increasingly reliant on electrical systems for their operation and comfort, the importance of car batteries has never been greater. A dead battery can strand a vehicle and its occupants, making it crucial for drivers to understand the signs of a weak or dead battery and know how to properly maintain and charge their battery.

Moreover, as vehicles become more advanced, with features like electric ignition, start-stop technology, and advanced safety systems, the demands on car batteries are increasing. This means that batteries must be capable of handling greater power loads while also lasting longer between charges.

  1. Conclusion

The car battery is a crucial component of any vehicle, responsible for providing the initial burst of power needed to start the engine and maintaining the electrical systems while it is running. Understanding common voltage and capacity ratings, as well as their various applications and importance in modern society, is essential for maintaining a reliable and safe vehicle. As technology continues to advance in the automotive industry, it is important to stay up-to-date on the latest battery technologies and best practices for maintaining your vehicle’s battery health.

 

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The advantages of using lithium-ion batteries for solar street lights compared to lead-acid batteries

18650 lithium ion battery pack is the most popular AGM replacement battery for solar street light, like 18650 9.6V 2500mAh 18650 battery pack, 11.1V 2600mAh 18650 battery pack.

What are the advantages of using lithium-ion batteries for solar street lights compared to lead-acid batteries?

 

  1. Lithium-ion batteries are small in size, light in weight and easy to transport.

Compared with lithium-ion batteries and lead-acid batteries used in solar street lights of the same power, the weight and volume of lithium-ion batteries are about one-third that of lead-acid batteries. In this way, transportation is easier and transportation costs will naturally decrease.

 

  1. Lithium-ion batteries have high energy density and longer service life.

The greater the energy density of a battery, the more power it can store per unit weight or volume. There are many factors that affect the service life of lithium-ion batteries, and energy density is one of the very important internal factors.
14.8V 4Ah Li Ion Customized Battery Packs- 18650 Lithium Ion Battery Pack

 

  1. Custom lithium battery pack are more convenient to install.

When installing traditional solar street lights, a battery pit must be reserved, and a buried box is used to place the battery in and seal it. Solar street lights with lithium battery systems are more convenient to install. They can be suspended or built-in, and the lithium-ion battery can be installed directly on the bracket.

 

  1. Lithium battery solar street lights are easy to maintain.

When repairing lithium-ion solar street lights, just remove the battery from the light pole or battery panel. When repairing traditional solar street lights, you have to dig out the batteries buried underground, which is more troublesome to operate.

Contact Himax now to unlock your exclusive battery customization options, Himax offers a wide range of options and flexible customization services to meet the needs of different users.
If you have any question, please feel free to contact us:

  • Name: Dawn Zeng (Director)
  • E-mail address: sales@himaxelectronics.com
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Researchers develop long-cycle, high-energy sodium-ion battery

Lithium-Ion-Battery

The constantly growing demand for energy storage is driving research and development in battery technology. The sodium-ion battery is a reliable and affordable replacement for li ion customized battery packs. The easy accessibility and availability of sodium make sodium-ion batteries more attractive and competitive.

By using elements that are abundant in the Earth and adjusting the phase growth of the layered oxide cathode, a long-cycle, high-energy sodium-ion battery has now been developed and validated at 165 Wh/kg with the collaboration of Dr. Qingsong Wang, junior group leader at the Chair of Inorganic Active Materials for Electrochemical Energy Storage.

“Our result shows that sodium-ion batteries are even more cost-effective and sustainable on an industrial scale than conventional li ion customized battery packs, which are based on iron phosphate chemistry,” says Wang.

Li Ion Customized Battery Packs

In the study, which has been published in Nature Energy by a team of scientists from the Universities of Bayreuth (Germany), Xiamen (China), Shenzhen (China), the Argon National Laboratory (U.S.) and the Physics Institute of the Chinese Academy of Sciences in Beijing (China), it is shown that the intergrowth structure can be adapted by controlling the charge depth. This allows a prismatic-type stacking state to be inserted evenly between the octahedral-type stacking states.

 

This helps to avoid neighboring octahedral-type stacking faults. Octahedral-type and prismatic-type refer to the geometric arrangement of atoms or ions in a crystal lattice. Octahedral-type means that the atoms or ions in a crystal are arranged in an arrangement that resembles an octahedron. Prismatic-type refers to an arrangement that resembles a prism.

“Our research is to analyze the anionic oxygen redox reaction as an energy enhancer of the layered oxide for the sodium ion cathode,” says Wang.

“It is important to develop a strategy to make this reaction reversible and stable. In the long term, the results of our research can make mid-range electric vehicles more affordable, as the batteries for them can then be produced more cheaply and with a longer service life.”

More information: Xiaotong Wang et al, Achieving a high-performance sodium-ion pouch cell by regulating intergrowth structures in a layered oxide cathode with anionic redox, Nature Energy (2024). DOI: 10.1038/s41560-023-01425-2

Journal information: Nature Energy

 

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The Science Behind Overcharging and 5V Battery Health

5v-2200mah-li-ion-battery

Overcharging refers to the process of continuing to apply current to a battery after it has reached its charging capacity limit, causing the battery to continue accepting a charge.

In general, 5V lithium-ion batteries are relatively safe under normal charging conditions because modern electronic devices are typically equipped with charging management circuits that can monitor and control the battery’s charging status to prevent overcharging. However, occasional instances of overcharging may occur.

What are the possible phenomena when a 5V lithium-ion battery is overcharged?

 

Overheating

Overcharging can lead to the battery overheating, accelerating internal chemical reactions, aging the battery, and compromising its performance. Additionally, overheating may result in safety issues, such as the expansion or even rupture of the battery casing.

 

Gas Generation

In extreme cases, overcharging may cause the generation of gas inside the battery, leading to the expansion or rupture of the battery casing. Gas generation may also react with components in the electrolyte, further damaging the battery.

 

Loss of Electrolyte

Electrolyte is essential for the normal operation of the battery, and its loss can result in decreased battery performance, reduced capacity, and even battery failure.

 

Reduced Battery Lifespan

Overcharging accelerates the aging process of the battery, leading to a shortened lifespan. The cycle life of the battery (the number of charge-discharge cycles) may also significantly decrease.

5v-2200mah-li-ion-battery

To avoid overcharging a 5V battery, consider the following practices:

Use Original or Compliant Chargers: Use chargers provided by the original manufacturer or those that comply with relevant standards. This ensures that the charger is designed to meet the battery specifications and incorporates appropriate charging management systems.

Use Appropriate Power Adapters: Ensure that the selected power adapter’s output voltage and current match the battery specifications. Avoid using chargers from unknown sources or those that are not compliant.

Avoid Using Damaged Charging Devices: Refrain from using damaged or broken charging devices, as this may cause unstable current and voltage, increasing the risk of overcharging.

Follow User Instructions: Read and follow the user instructions for both the device and the battery, understanding the maximum allowable charging voltage and current. Ensure compliance with the instructions during use.

Avoid Prolonged Charging: When the battery is fully charged, try to avoid leaving the device plugged in for an extended period. Although modern devices often have charging management systems, it’s still advisable to prevent prolonged charging.

Regularly Check Device and Battery Status: Periodically check the status of the device and the battery to ensure there are no obvious signs of damage or abnormalities. If issues are detected, promptly replace or repair the device.

Use Batteries with Charging Protection: Some batteries come with built-in protection circuits to prevent overcharging. When purchasing batteries, consider selecting models equipped with charging protection features.

 

Overall, effective battery management is crucial to ensure the safe operation of your 5v batteries and devices, if you are looking for high quality, reliable 5v battery management solutions, please feel free to contact us.

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Rechargeable Battery for Electric Curtains

Himax - 4/5sc Sub C Ni-Mh

As we all know, many electric curtains on the market are battery-driven. As the market demand for electric curtains continues to expand, the demand for 18650 battery pack are also increasing. The batteries for electric curtains are very similar in appearance and size.

Currently, the batteries mainly used for electric curtains include 18650 lithium ion battery, 18650 lifepo4 battery, 18650 sodium ion battery, Ni-MH battery

Li ion customized battery packs, 18650 3S1P, 11.1V 2200mAh, 2600mAh, 2800mAh, 3000mAh, etc.

LiFePO4 lithium-ion battery, 18650 4S2P, 12.8V 2000mAh, 18650 12.8V 3000mAh, etc.

Sodium-ion battery pack, 18650 4S2P, 12.4V 2600mAh.

Himax - Battery Ni-Mh 2/3AA 1.2V and li-ion battery pack manufacturing

At present, sodium-ion battery is still in its infancy. Some customers have begun testing samples, and there should be greater feedback in the market in recent years. Sodium-ion batteries are also a new trend in the future development of the battery industry.

Ni-MH battery pack 12V, 10S1P 12V 2500mAh.

This type of battery has mature technology, various models to choose from, and the price is not expensive.

HIMAX makes different type of rechargeable battery for electric curtains.

Himax has now also begun to provide sodium-ion battery solutions to our customers to meet the needs of industry development. We have more than 10 years experience and we we got as high as 99% of satisfaction on quality in these years.

Your inquiries are warmly welcome.

Contact Himax now to unlock your exclusive battery customization options, Himax offers a wide range of options and flexible customization services to meet the needs of different users.
If you have any question, please feel free to contact us:

  • Name: Dawn Zeng (Director)
  • E-mail address: sales@himaxelectronics.com
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Sodium Ion Battery vs. Lithium Ion: The Future of Energy Storage

In the race to develop the most efficient and sustainable energy storage technology, two leading contenders have emerged: sodium ion batteries and li ion customized battery packs. While lithium ion batteries currently hold the market share, sodium ion batteries offer several advantages that could disrupt the energy storage landscape in the coming years.

 

Li ion customized battery packs, which are widely used in consumer electronics, electric vehicles, and grid-scale energy storage systems, have a long track record of performance and reliability. Lithium ion batteries store energy in the form of lithium ions, which can travel through an electrolyte to power the battery. They have a high energy density, meaning they can store a large amount of energy in a small space. Lithium ion batteries also have a relatively long lifespan, making them a cost-effective choice for many applications.

 

However, lithium is a rare metal, making li ion customized battery packs expensive and environmentally unfriendly to produce. The extraction and refinement of lithium require significant resources and can have negative impacts on the environment. Furthermore, lithium ion batteries may not be the best solution for large-scale grid storage or for widespread use in electric vehicles due to their limited supply and high cost.

 

Sodium ion batteries, on the other hand, offer a more sustainable and cost-effective alternative to lithium ion batteries. Sodium is abundant and widely distributed, making it a less expensive and more environmentally friendly material for battery production. Sodium ion batteries work similarly to lithium ion batteries, storing energy in the form of sodium ions that travel through an electrolyte. They have a high specific capacity, meaning they can store more energy per unit weight compared to lithium ion batteries.

4000mAh batteries-Li Ion Customized Battery Packs

Another advantage of sodium ion batteries is their wide temperature range. They can operate in a variety of climates and conditions, making them suitable for use in extreme environments or in remote locations where temperature control is challenging. This flexibility could make sodium ion batteries a good choice for grid-scale storage in areas with variable climates or limited infrastructure.

 

Despite their advantages, sodium ion batteries still face challenges before they can compete with lithium ion batteries on the market. Researchers are working to improve the performance, lifespan, and cost-effectiveness of sodium ion batteries to make them viable alternatives. Development efforts are focused on improving the electrode materials, developing new electrolytes, and optimizing battery designs to improve energy density and charge/discharge rates.

 

The future of energy storage is uncertain as more research is conducted on both sodium ion batteries and li ion customized battery packs. It remains to be seen which technology will ultimately prevail. However, as the race continues, it’s clear that the development of sustainable and cost-effective energy storage solutions is critical for meeting the growing demand for clean and efficient energy worldwide.

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The Unbelievable Benefits of Sodium Na Ion Battery Packs

Himax All-Energy Australia Himax

In today’s fast-paced world, the demand for efficient and sustainable energy storage solutions is constantly on the rise. One of the most promising technologies in this field is the Sodium Na Ion Battery Pack. Let’s explore the benefits of this advanced energy storage solution and understand why it’s revolutionizing the way we power our devices and vehicles.

High Energy Density: Sodium Na Ion Battery Packs offer exceptionally high energy density, meaning they can store more energy in a smaller space. This makes them an excellent choice for devices that require compact yet powerful energy sources, such as electric vehicles and portable electronic devices.

Extended Lifespan: With proper care and use, Sodium Na Ion Battery Packs can last for hundreds of charge-discharge cycles, significantly longer than many other types of batteries. This ensures longer-lasting performance and reduces the need for frequent replacements, saving time and money.

Fast Charging: Sodium Na Ion Battery Packs can be charged quickly, significantly reducing charging times compared to other batteries. This is particularly beneficial for electric vehicles, where quick charging can enhance the driving experience and reduce the time spent stationary charging.

Future Batteries（Article illustrations）- Na Ion Battery Pack

 

Environmentally Friendly: Unlike some traditional batteries that contain harmful substances, Sodium Na Ion Battery Packs are environmentally friendly. They are safe to dispose of and are composed of materials that are easily recyclable, making them more sustainable and eco-friendly.

Scalability: Sodium Na Ion Battery Packs can be scaled up or down depending on the application, providing flexibility in terms of power and capacity requirements. This allows for efficient customization to fit the needs of various devices and systems.

Durability: The robust design of Sodium Na Ion Battery Packs makes them highly durable and resilient to harsh conditions. They can withstand extreme temperatures, vibrations, and other challenging environmental factors, making them suitable for use in various industrial, automotive, and aerospace applications.

In conclusion, the Sodium Na Ion Battery Pack offers a range of remarkable benefits that make it a highly suitable energy storage solution for a variety of applications. Its high energy density, extended lifespan, fast charging capabilities, environmental friendliness, scalability, and durability provide unprecedented performance in powering our devices and vehicles efficiently and sustainably. As the demand for clean and efficient energy storage solutions continues to grow, the Sodium Na Ion Battery Pack is set to play a pivotal role in meeting these demands and shaping a brighter energy future.

If you have any question, please feel free to contact us:

  • Name: Dawn Zeng (Director)
  • E-mail address: sales@himaxelectronics.com