NONAQUEOUS ELECTROLYTE BATTERY, AND BATTERY PACK

• Main Authors: SHIKODA MASAKI, YAMAMOTO MASARU, SARUWATARI HIDESATO
• Format: Patent
• Language: English; Japanese
• Published: 28.09.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery which is superior in life characteristic and enables the suppression of a self discharge.SOLUTION: A nonaqueous electrolyte battery 100 comprises: a positive electrode 6; a negative electrode 7; a separator 8 interposed between the positive electrode 6 and the negative electrode 7; and a nonaqueous electrolyte. The negative electrode 6 includes a negative electrode active material of which the Li occlusion potential is equal to or higher than 1 V vs. Li/Li, and the electric resistance in a state of being discharged is within a range of 100-100000 cm. The separator 8 has pores, of which the pore diameter is 1 μm or larger, and the pore volume proportion is larger than 70%. 【課題】寿命特性に優れ且つ自己放電を抑えることができる非水電解質電池を提供する。【解決手段】非水電解質電池１００は、正極６と、負極７と、正極６及び負極７の間に介するセパレータ８と、非水電解質とを具備し、負極６は、Ｌｉ吸蔵電位が１Ｖ ｖｓ． Ｌｉ／Ｌｉ+以上である負極活物質を含み、且つ放電状態における電気抵抗が１００ ・ｃｍ〜１０００００ ・ｃｍの範囲内にあり。セパレータ８は、細孔直径が１μｍ以上である細孔の細孔体積比率が７０％より大くする。【選択図】図５