NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY

摘要

A negative electrode 10 for a nonaqueous secondary battery has an active material layer 12 containing active material particles 12a. The particles 12a are coated at least partially with a coat of a metallic material 13 having low capability of lithium compound formation. The active material layer 12 has voids formed between the metallic material-coated particles 12a. When the active material layer 12 is imaginarily divided into equal halves in its thickness direction, the amount of the metallic material 13 is smaller in the half closer to the negative electrode surface than in the other half farther from the negative electrode surface. The weight ratio of [the particles/the metallic material] in the half closer to the negative electrode surface is preferably higher than that in the other half farther from the negative electrode surface.