Battery

• Main Authors: MITA KAZUTAKA, TANAHASHI YUTA
• Format: Patent
• Language: Chinese; English
• Published: 15.09.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a battery capable of suppressing the occurrence of springback. A battery disclosed herein is provided with a wound electrode body. The positive electrode is provided with a positive electrode active material layer containing a lithium transition metal composite oxide as a positive electrode active material and a positive electrode binder, and the length of the positive electrode active material layer in the width direction is 100 mm or more. The negative electrode includes a negative electrode active material layer containing graphite as a negative electrode active material. The separator is provided with a base material layer, a heat-resistant layer facing the positive electrode, and an adhesive layer facing the negative electrode. The content of the ceramic particles in the heat-resistant layer is 90 mass% or more. The content of the adhesive layer adhesive in the adhesive layer is 15 mass% or more. 本发明提供一种抑制回弹的产生的电池。此处公开的电池具备卷绕电极体。正极具备包含作为正极活性物质的锂过渡金属复合氧化物和正极粘合剂的正极活性物质层，正极活性物质层的宽度方向的