Nonaqueous lithium secondary battery
AssigneeHitachi, Ltd.
InventorsMasao SHIMIZU, Yoshiaki Kumashiro
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AssigneeHitachi, Ltd.
InventorsMasao SHIMIZU, Yoshiaki Kumashiro
Estimating the term…
A nonaqueous lithium secondary battery includes a positive electrode and a negative electrode capable of intercalating and releasing lithium ions and a separator. The negative electrode includes a collector and a negative electrode mixture layer formed on the collector. The negative electrode mixture layer includes at least a negative electrode active material and a binder. Nonconductive particles are buried in a top layer of the negative electrode mixture layer. The nonconductive particles and the negative electrode active material exist as a mixture in the top layer with a depth ranging from 1 to 20 μm. A volume ratio of nonconductive particles having a diameter equal to or less than 20 μm to a total volume of all the nonconductive particles and the negative electrode active material existing in the top layer of the negative electrode mixture layer ranges from 20 to 80%.
A nonaqueous lithium secondary battery comprising a positive electrode and a negative electrode capable of intercalating and releasing lithium ions, and a separator for separating the positive electrode from the negative electrode, wherein:
A nonaqueous lithium secondary battery comprising a positive electrode and a negative electrode capable of intercalating and releasing lithium ions, and a separator for separating the positive electrode from the negative electrode, wherein:
Dependencies are inferred from the claim text.