摘要
Using cotton and lithium ethoxide as raw materials, carboxymethyl cellulose lithium (CMC-Li) is synthesized and obtained, and it is used as a water-based binder in the negative electrode of lithium batteries. The synthesis method of a new type of CMC-Li is mainly studied as a lithium battery negative material binder, and water is used as a dispersant to assemble a battery and the relevant electrochemical performance is tested. CMC-Li as a lithium-replenishing binder for lithium batteries has better electrochemical performance. It can reduce the internal resistance of the battery by about 10%, significantly improve the phenomenon of lithium precipitation, the redox peak is reduced by 50% to 0.20 V, and the impedance is also significantly improved, reducing by more than 50%. Under the same conditions, the cycle period can reach 2500 circles, the lifespan is increased by more than 20%, and the effect of lithium supplementation is obvious. It shows that CMC-Li as a binder can greatly increase the content of lithium ions in the entire lithium battery, and improve the ion conductivity and ion conduction rate, which further verifies the advantages of lithium-replenishing binders.
源语言 | 英语 |
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文章编号 | 2200049 |
期刊 | Starch/Staerke |
卷 | 74 |
期 | 7-8 |
DOI | |
出版状态 | 已出版 - 7月 2022 |
已对外发布 | 是 |