Electric storage device

• Main Authors: KAKO TOMONORI, KAMIHIRA KENTA, KANEKO TAKASHI, YAMAKAWA YUTO, SEKIGUCHI HIROSATO, NAKAI KENTA, OYAMA JUN
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A power storage element on one side surface of the present invention is provided with a negative electrode having a negative electrode active material layer, and a non-aqueous electrolyte. The negative electrode active material layer contains a negative electrode active material, the negative electrode active material contains natural graphite particles, the internal porosity of the natural graphite particles is 2% or less, and the charging depth of the negative electrode active material in a charged state is 0.6 or less. 本发明的一个侧面的蓄电元件具备具有负极活性物质层的负极、以及非水电解质；上述负极活性物质层含有负极活性物质，上述负极活性物质包含天然石墨粒子，上述天然石墨粒子的内部空隙率为2％以下，充电状态下的上述负极活性物质的充电深度为0.6以下。