Shenzhen Hysincere Battery Co., Ltd
Shenzhen Hysincere Battery Co., Ltd

other news


Home >  other news > 

Why should we improve the ion conductivity of polymer battery electrolytes?

source:other news release time:2023-09-04 Hits:0     Popular:Lithium-ion battery wholesale

  

  Lithium polymer batteries have been widely developed and studied as a rechargeable, high specific energy device. These batteries are composed of lithium or carbon negative electrodes (anodes), corresponding high potential embedded positive electrodes (cathodes), a polymer electrolyte. Due to the application of polymer electrolytes, it is possible to develop a battery with higher safety and the ability to twist and deform at will. The main requirements for the performance of polymer electrolytes in lithium-ion batteries are high ion conductivity, stable electrochemical and thermal properties, flexible mechanical properties, and high mechanical strength. The main parameters that characterize the performance of electrolytes include ion conductivity, electrochemical stability window, and lithium ion migration number.

  To improve the ion conductivity of polymer battery electrolytes, it can be achieved by increasing the number of charged particles in the polymer and the migration rate of charged particles. Lithium salts such as LiCIO, LiBF4, LiN (CFaSOz) 2, LiSCN, LiC, and Coa generally have high ionic conductivity in polymers with high dielectric constants due to their low dissociation energy. The use of composite carbon electrodes and AMS based colloidal polymers as electrolytes in lithium-ion batteries has shown excellent performance.

  Increasing the migration rate of charged particles can also improve the ion conductivity of polymers while maintaining their dielectric constant. The more lithium salts dissociate into free ions in the electrolyte, the faster the ion migration, the higher the conductivity, the larger the dielectric constant of the solvent, the smaller the electrostatic interaction between lithium ions and anions, and the more free ions there are. But solvents with high dielectric constants also have high viscosity, which can actually slow down the migration rate of ions.

  For solutes, as the concentration of lithium salts increases, the conductivity increases, but the electrolyte viscosity also increases accordingly; In addition, the larger the radius of anions in lithium salts, the smaller the lattice energy, and the easier the lithium salts are to dissociate, but the viscosity also increases accordingly. Due to the interaction of the above factors, the maximum value of conductivity in a specific electrolyte is generally between 1.1-1.2 mol • I lithium salt concentration. Therefore, a solvent with a high dielectric constant can be mixed with one or several solvents with low viscosity, and the electrolyte with higher conductivity in polymer lithium-ion batteries can be obtained by adjusting the ratio (volume ratio) of each component.


Read recommendations:

deep cycle marine battery Production

solar generator amazon

18650 21700 26650 10C 15C 20C Lithium Ion Battery Cell

The Future of Energy Storage: Market Trends and Investment Opportunities

What is 3C lithium-ion battery and what is its harm

Share:

Last article:What conditions should lithium-ion batteries from lithium-ion battery manufacturers meet in terms of safety performance?lithium batteries for solar panels

Next article:What are the common sense introductions in the use of low-temperature batteries?

related suggestion

lifepo4 24v Factory

2023-04-07

solar battery storage system

2023-03-20

solar power battery storage price

2023-04-07

lithium batteries for solar panels sales

2023-03-22

48v lithium golf cart battery

2023-04-07

solar power storage Manufacturing

2023-03-20

lifepo4 power station

2023-05-08

solar generator price

2023-05-08

solar generators for sale

2023-05-08

solar powered generator

2023-05-08

portable solar generator

2023-05-08

deep cycle trolling motor battery

2023-05-08

Lithium Replacing Lead-Acid LiFePo4 Battery Pack 12V 200Ah

2022-09-19

Home Energy Storage System 51.2V 150Ah LiFePo4 Battery Pack

2023-06-19

LiFePo4 Battery Pack 12V 200Ah for Ship Boat

2023-02-14

Lithium Polymer Battery Pack for Smart Home Device

2023-02-14

HB-N300 300W Solar Power Station Black

2022-09-09

Optimizing Energy Storage: Key Considerations for Businesses

2025-03-13

Best 36V Lithium Battery for Golf Cart: The Ultimate Upgrade for Performance and Longevity

2025-03-24

Which is better for lithium batteries and lead -acid batteries?lithium batteries for solar panels direct sales

2023-04-07

Method of selecting and using automobile battery.deep cycle trolling motor battery

2023-03-13

The Excellence of LG 18650 Lithium-Ion Batteries: Powering Modern Devices

2025-03-19

How did the battery develop?

2022-11-12

Medical Devices Lithium Battery.deep cycle trolling motor battery Vendor

2023-03-16

12V to 48V lead acid can replace modular batteries.deep cycle trolling motor battery

2023-05-09

Charging steps for new energy vehicles

2023-07-27

How to maintain power lithium batteries in winter.solar powered electric generator

2023-06-14