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release time:2024-08-23 Hits: Popular:AG11 battery
What are the requirements of 6F22 carbon battery for negative electrode materials?
As the core component of 6F22 carbon battery, negative electrode materials usually meet the following conditions when used:
①Low and stable lithium ion insertion potential to ensure a higher output voltage;
②Allow more lithium reversible insertion and extraction, with higher specific capacity;
③Relatively stable structure during charging and discharging, with a longer cycle life;
④Higher electronic conductivity, ionic conductivity and low charge transfer resistance to ensure smaller voltage polarization and good rate performance;
⑤Can form a stable solid electrolyte membrane with electrolyte to ensure higher Coulomb efficiency;
⑥Simple preparation process, easy industrialization, and cheap price;
⑦Environmentally friendly, will not cause serious pollution to the environment during material processing and actual use;
⑧Rich resources, etc.
For more than 30 years, although new lithium-ion battery negative electrode materials have been reported, few of them can be commercialized. The important reason is that few materials can take into account the above conditions. For example, although materials such as metal oxides, sulfides and nitrides that use conversion reactions as a mechanism have high specific capacity, they cannot be truly applied in practice due to problems such as high platform potential, severe polarization, large volume change, difficulty in forming a stable SEI and high cost during the lithium ion insertion process.
Graphite has been widely used because it takes the above conditions into account. In addition, although Li4Ti5O12 has low capacity and high lithium ion insertion potential, it has a stable structure during the charging and discharging process and allows high-rate charging and discharging. Therefore, it also has certain applications in power 6F22 carbon battery and large-scale energy storage.
The processing of negative electrode materials is only one part of the entire battery manufacturing process. The formulation of standards helps battery companies to judge the quality of materials. In addition, materials will inevitably be affected by factors such as people, machines, materials, environment and testing conditions during processing and transportation. Only by standardizing their various physical and chemical properties can their reliability be truly ensured.
Generally speaking, the key technical indicators of negative electrode materials include: crystal structure, particle size distribution, tap density, specific surface area, pH, water content, main element content, impurity element content, first discharge specific capacity and first charge and discharge efficiency.
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