Patent ID: 7892677

Claim:
A negative electrode for a non-aqueous electrolyte secondary battery, the negative electrode comprising: a current collector; and a mixture layer electrically coupled to the current collector, the mixture layer including: a composite negative electrode active material containing: a silicon-containing particle capable of charging and discharging at least a lithium ion; a carbon nanofiber attached to a surface of the silicon-containing particle; and at least one catalyst element selected from a group including Cu, Fe, Co, Ni, Mo, and Mn, the catalyst element promoting growth of the carbon nanofiber; a first binder containing an acryl-group-containing polymer; and a second binder containing an adhesive rubber particle, wherein the first binder binds the silicon-containing particle to the current collector, and the second binder is a core-shell copolymer and binds the carbon nanofibers together, and content of the first binder is higher near the current collector than in another part in the mixture layer.