Invention Grant
US09508979B2 Battery, negative electrode for battery, battery pack, electronic apparatus, electric vehicle, electricity storage apparatus and electric power system 有权
电池,电池用负极,电池组,电子设备,电动车辆,蓄电装置和电力系统

Battery, negative electrode for battery, battery pack, electronic apparatus, electric vehicle, electricity storage apparatus and electric power system
Abstract:
A battery comprising a positive electrode; a negative electrode including a negative electrode active material layer that is formed on at least one surface of a negative electrode collector; and an electrolyte, wherein in the negative electrode active material layer from the negative electrode collector up to ½ of a layer thickness in a surface direction of the negative electrode active material layer, a pore volume ratio expressed as (pore volume B/pore volume A) that is a ratio of a pore volume A (ml/g) in a range of 0.001 μm or more and 0.4 μm or less of a pore diameter measured by a mercury porosimeter and a pore volume B (ml/g) in a range of 0.4 μm or more and 10 μm or less of the pore diameter is 1.4 or more and 3.4 or less.
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