McDermott Will & Emery LLP
Non-aqueous electrolyte secondary battery
A non-aqueous electrolyte secondary battery includes: a positive electrode capable of absorbing and desorbing lithium; a negative electrode capable of absorbing and desorbing lithium; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode includes a composite oxide represented by formula (1): LiNixM1-x-yLyO2 as an active material. The formula (1) satisfies 0.3≦x≦0.9 and 0≦y≦0.1. The element M is at least one selected from the group consisting of Co and Mn, and the element L is at least one selected from the group consisting of Mg, Al, Ti, Sr, Zn, B, Ca, Cr, Si, Ga, Sn, P, V, Sb, Nb, Ta, Mo, W, Zr, Y and Fe. The non-aqueous electrolyte includes a main solvent, a solute and vinyl ethylene carbonate.
Panasonic Corporation
C H Y H C C C C H C C H H C H
C01G H01M Y02E H01M C01G C01G C01G C01G H01M C01P C01P H01M H01M C01P H01M
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Tooru Masaki Hiroshi
Matsui Deguchi Yoshizawa