-(2)What are the most promising new materials for lithium batteries in the future

(2)What are the most promising new materials for lithium batteries in the future
author:enerbyte source:本站 click314 Release date: 2023-11-06 09:52:32
abstract:
During the charging and discharging process, the volume expansion can reach 300%, which can lead to the pulverization of silicon material particles and cause material capacity loss. Poor suction ability at the same time. Poor cycle life. At present, the above problems are be...

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During the charging and discharging process, the volume expansion can reach 300%, which can lead to the pulverization of silicon material particles and cause material capacity loss. Poor suction ability at the same time.

Poor cycle life. At present, the above problems are being solved through methods such as silicon powder nanomaterialization, silicon carbon coating, and doping, and some companies have made certain progress.

2. Lithium titanate

In recent years, there has been a high level of research and development enthusiasm for lithium titanate in China.

The important advantages of lithium titanate include:

Long cycle life (up to 10000 cycles or more), belonging to zero strain materials (volume change less than 1%), without generating traditional SEI films;

High security. It has a high lithium insertion potential, does not generate dendrites, and has extremely high thermal stability during charging and discharging;

Fast charging capability.

The current important factor limiting the use of lithium titanate is its high price, which is higher than traditional graphite. In addition, the gram capacity of lithium titanate is very low, at around 170mAh/g. Only by improving production processes and reducing production costs can lithium titanate's advantages such as long cycle life and fast charging be fully utilized. Combining market and technology, lithium titanate is more suitable for buses and energy storage fields that do not require space.

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