Negative electrode for secondary battery and lithium secondary battery comprising same

• Main Author: JEONG KWANG-HO
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a negative electrode for a secondary battery and a lithium secondary battery including the same. A negative electrode for a secondary battery according to one embodiment of the present invention comprises a negative electrode current collector and a negative electrode mixture layer disposed on at least one surface of the negative electrode current collector, the negative electrode mixture layer containing a silicon-based active material, an acrylate-based binder, and a rubber-based binder, the rubber-based binder comprising an acrylate-based monomer, the content ratio of the acrylate monomer in the rubber-based adhesive is more than 4 mol% and less than 80 mol%. According to the invention, the volume expansion of the silicon-based active material can be inhibited, and the resistance characteristic of the battery can be ensured at an excellent level. 本发明提供一种二次电池用负极及包括其的锂二次电池。根据本发明的一个实现例的二次电池用负极包括负极集流体及配置在所述负极集流体的至少一面上的负极合剂层，所述负极合剂层含硅系活性物质、丙烯酸酯系粘合剂及橡胶系粘合剂，所述橡胶系粘合剂包括丙烯酸酯系单体，所述橡胶系粘合剂内的丙烯酸酯系