Patent ID: 8187754

Claim:
A non-aqueous electrolyte coin battery comprising: a positive electrode, a negative electrode, a separator disposed between said positive electrode and said negative electrode, and a non-aqueous electrolyte, wherein said negative electrode includes a molded body of a material mixture including a Si-containing negative electrode active material particle and a conductive agent, said molded body not including a current collector, said conductive agent includes a fibrous first conductive agent and a fibrous second conductive agent, said first conductive agent has an average fiber diameter of 5 nm or more and 60 nm or less, said second conductive agent has an average fiber diameter of 70 nm or more and 7 μm or less, said first conductive agent makes up 1 to 19 wt % of said molded body, said second conductive agent makes up 4 to 22 wt % of said molded body, and said first conductive agent covers at least a portion of a surface of said Si-containing negative electrode active material particle.