ANODELESS BATTERY AND ANODELESS BATTERY MANUFACTURING METHOD

• Main Authors: WATANABE YUSUKE, KIMIJIMA TAKEYUKI, EGUCHI TATSUYA, IWATA HIROSHI, FUKUNAGA RYO
• Format: Patent
• Language: English; Japanese
• Published: 01.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To improve the capacity retention rate of an anodeless battery.SOLUTION: An anodeless battery 10 includes a negative electrode 22 including a negative electrode current collector 22a, a positive electrode 21 including a positive electrode current collector 21a and a positive electrode active material layer 21b, a separator 23 disposed between the negative electrode 22 and the positive electrode 21, and a non-aqueous electrolyte, and the positive electrode active material layer 21b contains a lithium dopant that releases lithium ions. Between a lithium deposition layer 22b deposited on the negative electrode current collector 22a and the separator 23, a nonwoven fabric film 24 having an average fiber diameter of 20 μm or less is provided.SELECTED DRAWING: Figure 1 【課題】アノードレス電池の容量維持率を向上させる。【解決手段】アノードレス電池１０は、負極集電体２２ａを備える負極２２と、正極集電体２１ａ及び正極活物質層２１ｂを備える正極２１と、負極２２と正極２１との間に配置されたセパレータ２３と、非水電解質とを備える。正極活物質層２１ｂは、リチウムイオンを放出するリチウムドープ剤を含有する。負極集電体２２ａに析出したリチウム析出層２２ｂとセパレータ２３との間には、平均繊維径が２０μｍ以下である不織布膜２４が設けられている。【選択図】図１