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

other news


Home >  other news > 

Lithium battery electrolyte composition.lithium deep cycle marine battery Manufacturing

source:other news release time:2023-03-27 Hits:0     Popular:Lithium-ion battery wholesale

  

  1. Organic solvent

  Organic solvents are the main part of the electrolyte, and the performance of the electrolyte is closely related to the performance of the solvent. The solvents commonly used in the electrolytes in lithium ions are carbonate (EC), carbonate (DEC), carbonate (DMC), carbonate ethyl ester (EMC), etc., and generally do not use carbonate (PC ), Ethylene glycol dihalin (DME), etc., is mainly used for solvents for lithium battery. PC is used for secondary batteries. The graphite negative electrode compatibility with lithium -ion batteries is very poor. During the charging and discharge process, the PC is decomposed on the surface of the graphite negative electrode. At the same time, it causes the graphite layer to peel off, resulting in a decline in the cycle performance of the battery. However, a stable SEI film can be established in EC or EC+DMC composite electrolytes. It is generally believed that the hybrid solvents of EC and a chain -shaped carbonate are excellent electrolytes for lithium ion batteries, such as EC+DMC, EC+DEC, etc. The same electrolyte lithium salt, such as LIPF6 or LIC104, the PC+DME system always shows the worst charging and discharge performance (relative to the EC+DEC, EC+DMC system). But not absolute, when PC and related additives are used for lithium -ion batteries, it is conducive to improving the low temperature performance of the battery.

  Organic solvents must be strictly controlled before use. If the purity is required to be more than 99.9%, the moisture content must reach 10*106. The oxidation potential of an organic solvent with a close connection between the solvent and the stable voltage is about 5V. The oxidation potential of the organic solvent is of great significance to studying preventing batteries from overcharging and safety. The strict control of the moisture of organic solvents has a decisive impact on formulating qualified electrolytes.

  The water drops to 10*106 can reduce the decomposition of LIPF6, slow down the decomposition of the SEI membrane, and prevent gas.

  The method of using molecular sieve adsorption, normally pressure or decompression distillation, and interulxitance of inert gas can make the moisture content meet the requirements.

  2. Electrolytic lithium salt

  LIPF6 is the most commonly used electrolyte lithium salt and is the direction of the development of lithium salt in the future. Although the laboratory also uses electrolytes such as LICLO4, LiasF6, etc., because the high temperature performance of the battery using LIC104 is not good, plus LIC10: It is easy It is not suitable for large -scale use of lithium ion batteries.

  LIPF6 is stable on negative electrode, large discharge capacity, high conductivity, small internal resistance, fast charging speed, but extremely sensitive to water and HF acid, easy to react, and can only operate in a dry atmosphere (such as gloves that are less than 20x10 in the dry atmosphere (such as environmental water less than 20x10 gloves. Inside the box), and it is not resistant to high temperature, a decomposition response occurs at 80 ° C ~ IO0 ° C, which generates five fluoride phosphorus and lithium fluoride, and it is difficult to purify. Therefore, when preparing the electrolyte, the self -decomposition and solvents caused by the lipf6 dissolved heat and the solvents should be controlled. break down. Domestic LIPF percentage content can generally meet the standards, but the HF acid content is too high and cannot be directly used to prepare electrolytes, which must be purified. In the past, LIPF6 relied on imports, but now some manufacturers in China can also provide good quality products, such as Shantou Jinguang Hi -Tech Co., Ltd., Tianjin Chemical Design Research Institute, Shandong Fei City Xingtai Chemical Plant, etc. The quality of LIPF6 produced abroad is better. It is prepared into an electrolyte. The content of moisture and HF acid is stable, and the electrolyte will not become sticky.


Read recommendations:

whole house solar generator

lifepo4 battery 12v 200ah

High Discharge 5C 10C 18650 21700 Lithium Ion Battery Cell

Energy Storage Economics and Geopolitical Realities: A Look at Battery Pricing and the Impact of Conflict

Application of 48V Lithium Ion Battery Pack System in Automobile

Share:

Last article:The difference between lithium ion battery and lithium polymer battery.lithium batteries for solar panels Manufacturing

Next article:Precautions for drone batteries.lithium batteries for solar panels manufacturer

related suggestion

solar power battery storage company

2023-04-07

lithium batteries for solar panels Processing

2023-03-22

12V 150Ah Rechargeable Lithium Battery for Marine Boat

2023-03-20

deep cycle marine battery wholesale

2023-03-20

solar powered battery pack wholesaler

2023-04-07

lithium ion golf cart batteries price

2023-04-07

deep cycle trolling motor battery

2023-05-08

golf cart batteries for sale

2023-05-08

12 volt batteries

2023-05-08

powerstation 2000 watt

2023-05-08

lifepo4 battery 12v 100ah

2023-05-08

rv marine battery

2023-05-08

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

2023-02-14

Home Energy Storage System 51.2V 150Ah LiFePo4 Battery Pack

2023-06-19

Lithium Ion Battery 18650 Pack 11.1V 12V 2000mAh 3000mAh

2023-02-09

20kwh 30kwh 40kwh High Power Lithium Battery 307V 100Ah For Solar Energy Storage System

2023-02-14

HB-N300 300W Solar Power Station Black

2022-09-09

What are the principles of using high-temperature batteries?best solar generator for home

2023-09-22

Maximizing Golf Cart Performance: The Superiority of 72V Lithium Batteries

2025-03-17

Evaluating Sodium-Ion Battery Price and Solutions for Home and Industrial Use

2025-03-14

Key Trends in Residential Energy Storage and Industry Leadership in 2024

2025-03-13

Advancements in Energy Self-Storage: Industrial and Mobile Solutions for a Sustainable Future

2025-03-13

The correct way to use electric vehicle lithium batteries.deep cell marine battery price

2023-03-11

Lithium battery charging process.lithium trolling motor battery

2023-08-14

Why is mostly a polymer battery?lithium power station wholesale

2023-03-31

Common problems of power lithium battery pack maintenance

2022-10-15

Battery charging method Daquan

2023-02-10