source:other news
release time:2023-09-15
Hits:0
Popular:
In the actual use of lithium batteries, active particles often undergo many irreversible physical, chemical, and mechanical processes, such as local overcharging and discharging, surface structure collapse, uneven electrode/electrolyte interface, metal dissolution/precipitation, volume expansion/contraction, local temperature fluctuations, etc. The interaction between these side reactions can lead to the accumulation of mechanical or thermal stress, electrochemical stress, and further induce the generation of cracks within the active particles. This type of crack mainly occurs at stress concentration and weak points of particles, such as particle surfaces, SEI films, grain boundaries, etc.
Especially for silicon-based negative electrodes, when lithium is inserted and removed during the charging/discharging cycle, the volume change reaches 270%. This huge volume expansion will cause the crushing of silicon particles and the separation of the coating from the copper collector. Especially, the SEI membrane undergoes a continuous process of fracture and regeneration, constantly consuming lithium ions and active substances, resulting in continuous capacity decay and poor cycling stability.
The cracks generated inside the particles can lead to poor contact between particles, damage to particle integrity, and changes in electron and ion transport paths, leading to limited diffusion. The results indicate that the diffusion length of electrons and ions in the solid phase increases with the generation of cracks. This will further affect the electrochemical reaction, which may cause uneven local charging and discharging, leading to secondary cracks in the particles.
Read recommendations:
12 volt deep cycle marine battery
HB-N100 100W Small Power Station 130Wh
Self -discharge rate of lithium ion battery.portable solar power station
What are the main reasons for lithium battery capacity degradation?
Last article:Understanding the voltage range of lithium batteries from the perspective of battery packs.lithium ion golf cart batteries
Next article:What are the effects of long-term storage for customized lithium batteries.best battery for home inverter
related suggestion
solar power battery storage manufacture
2023-04-07portable solar power station
2023-03-20lithium batteries for solar panels wholesale
2023-03-22lithium batteries for solar panels price
2023-04-07lifepo4 battery 12v wholesaler
2023-04-07lithium boat batteries
2023-03-2024v deep cycle battery
2023-05-08portable battery generators
2023-05-08deep cycle solar battery
2023-05-08portable power station for camping
2023-05-08best trolling motor battery
2023-05-0812v 100ah battery price
2023-05-083600W 5120Wh solar power station lifepo4 battery portable with wheels
2023-06-0715S 48V 100Ah LiFePo4 Battery for Home Energy Storage Solar System
2023-06-19Lithium Polymer Battery Pack for Smart Home Device
2023-02-1451.2V 800Ah 600Ah 200Ah 100Ah Modular Stackable Rack Mount Energy Storage System
2023-02-21Lithium Ion Battery 18650 Pack 11.1V 12V 2000mAh 3000mAh
2023-02-09The reason lithium-ion batteries are really green
2022-10-11Optimizing Power Solutions: A Guide to 12V Batteries for Diverse Applications
2025-03-18Can a Solar Generator Run a Space Heater? An Expert’s Guide
2022-09-08Five methods to select high -quality lithium batteries.best deep cycle marine battery
2023-06-16Which is better for lithium batteries and lead -acid batteries?lithium batteries for solar panels direct sales
2023-04-07Introduction to the main part of the lithium battery protection board.lithium ion golf cart batteries Factory
2023-04-24Prospects for the Development of Lithium Batteries.best rv deep cycle battery
2023-07-03What are the functions of BMS?
2023-03-03How to judge whether your electronic equipment can be brought on the plane
2022-12-17NMC811 battery
2022-11-19