Silicon-based negative electrode conductive paste and preparation method thereof

• Main Authors: LI JICHUN, ZHAO LIXUE, WANG DONG, AI QINGFENG, MENG JINFENG, LIU JINAN, ZHANG SURONG
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a silicon-based negative electrode conductive paste and a preparation method thereof, and belongs to the technical field of lithium ion batteries, the silicon-based negative electrode conductive paste comprises a dispersing agent, a solvent, graphene powder, carbon nanotubes and a CMC solution, and a negative electrode battery prepared from the 100 silicon-based negative electrode conductive paste is still high in reversible capacity after 500 times of charge-discharge cycles, and can be applied to lithium ion batteries. Therefore, the ratio of the composite conductive paste taking the graphene as the main material and the carbon nanotubes as the auxiliary material is more beneficial to exerting the high electron conduction efficiency of the graphene and the carbon nanotubes and ensuring the rapid conduction of lithium ions in the electrode, so that the cycle performance and the rate capability of the electrode are improved. 本发明公开了一种硅基负极导电浆料及其制备方法，属于锂离子电池技术领域，包括分散剂、溶剂、石墨烯粉、碳纳米管和CMC溶液，采