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

other news


Home >  other news > 

Lithium battery capacity attenuation overcharge

source:other news release time:2022-12-28 Hits:0     Popular:Lithium-ion battery wholesale

  There are many kinds of active materials that can be used as the cathode of lithium ion batteries, mainly including carbon based cathode materials, silicon based and tin based cathode materials, lithium titanate cathode materials, etc. Different types of carbon materials have different electrochemical properties. Among them, graphite has the advantages of high conductivity, excellent layered structure, and high crystallinity, which is more suitable for lithium insertion and removal. At the same time, graphite materials are affordable and have a large stock, so they are widely used.

  When the lithium ion battery is charged and discharged for the first time, solvent molecules will decompose on the graphite surface and form a passive film called SEI. This reaction will lead to the loss of battery capacity and is an irreversible process. In the overcharge process of lithium ion battery, metal lithium deposition will occur on the negative electrode surface, which is easy to occur when the positive active material is excessive relative to the negative active material. At the same time, lithium metal deposition may also occur under high magnification conditions.

  In general, the formation of metal lithium leads to the change of lithium battery capacity attenuation mainly due to the following aspects: First, the amount of recyclable lithium in the battery decreases; Second, lithium metal reacts with electrolyte or solvent to form other by-products; Third, lithium metal is mainly deposited between the negative electrode and the diaphragm, which causes the pore of the diaphragm to be blocked, resulting in an increase in the internal resistance of the battery. Different graphite materials have different influence mechanisms on the capacity attenuation of lithium ion batteries. The specific surface area of natural graphite is relatively high. Therefore, the capacity of lithium battery will be lost if self discharge reaction occurs. As the battery cathode, the electrochemical reaction impedance of natural graphite is also higher than that of artificial graphite. In addition, the dissociation of the layered structure of the negative electrode during the cycle, the dispersion of the conductive agent during the fabrication of the electrode sheet, and the increase of the electrochemical reaction impedance during the storage process are all important factors that lead to the capacity loss of the lithium battery.

Read recommendations:

lithium batteries for boats wholesale

12v 200ah battery

51.2V 100Ah Household Energy Storage System Wall Mount Home Battery Pack

Application direction of lithium batteries.portable power station for camping

What are the advantages of 26550 lithium battery?

Share:

Last article:​Polymer lithium battery

Next article:What are the characteristics of security patrol robots?

related suggestion

lithium marine batteries Processor

2023-03-22

lithium trolling motor battery price

2023-04-07

solar power battery storage Vendor

2023-03-20

solar battery storage system cost

2023-03-20

solar power battery storage wholesaler

2023-04-07

lithium marine batteries

2023-03-20

portable power station with solar panel

2023-05-08

48v lifepo4 battery

2023-05-08

portable power station for camping

2023-05-08

lithium golf cart batteries price

2023-05-08

best portable solar generator

2023-05-08

lithium marine batteries

2023-05-08

Household Energy Storage System Battery Pack Integrated with Inverter 16S2P 51.2V 100Ah

2022-10-20

Sodium Ion Battery Pack 12V 100Ah SIB 2C Discharge

2024-06-27

Low Temperature Lithium Battery 18650 26650 Cell

2022-10-18

5kWh Household Energy Storage System 51.2V 100Ah Battery LiFePo4 for Solar Power

2022-09-29

Explosion Proof Rechargeable Lithium Special Battery Cell 26650 32700

2023-02-14

Choosing the Right Lithium Battery: 15Ah, 32Ah, and 35Ah Options

2025-03-12

A Comprehensive Guide to 18650 Battery Cases and Storage Solutions for Your Business

2025-03-13

What are the knowledge introductions in the use of lithium batteries?best batteries for solar power storage

2023-06-07

Important factors affecting internal resistance of battery

2022-11-11

Choosing the Right Lithium Battery: A Comprehensive Guide

2025-03-12

18650 lithium battery.portable power station for camping

2023-06-08

Lithium battery charging and discharge method.best portable power station

2023-05-17

Nickel -hydride battery electrode hydrogen alloy LANI5 advantages and disadvantages.deep cell marine battery manufacture

2023-04-14

Look at the new energy vehicle industry of lithium battery terminal from the policy level

2022-12-01

Internal structure of lithium iron phosphate battery

2022-12-30