RESIN CURRENT COLLECTOR AND LITHIUM ION BATTERY

• Main Authors: SATO HAJIME, KUSANO RYOSUKE, HORIE HIDEAKI, AKAMA HIROSHI, KUSACHI TAKEKI, OSAWA YASUHIKO
• Format: Patent
• Language: English; Japanese
• Published: 30.08.2018
• 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 resin current collector having a low resistance value, and a lithium ion battery using the same.SOLUTION: A resin current collector, comprises: polyolefin (P); and a conductive filler, wherein the polyolefin (P) has a crystallization temperature of 55°C or higher and 96°C or lower. The conductive filler contains conductive carbon. The content of the conductive carbon may be 20 wt.% or more and 30 wt.% or less to a total weight of the polyolefin (P) and the conductive carbon. A lithium ion battery comprises: the resin current collector; and an active material layer formed on a surface of the resin current collector.SELECTED DRAWING: None 【課題】抵抗値の低い樹脂集電体及びそれを用いたリチウムイオン電池の提供。【解決手段】ポリオレフィン（Ｐ）と導電性フィラーとを含み、ポリオレフィン（Ｐ）の結晶化温度が５５℃以上９６℃以下である樹脂集電体。導電性フィラーが導電性カーボンであり、導電性カーボンの含有量が、ポリオレフィン（Ｐ）及び導電性カーボンの合計重量に基づいて２０重量％以上、３０重量％以下であっても良い。また、前記樹脂集電体と、樹脂集電体の表面に形成された活物質層とを備えるリチウムイオン電池。【選択図】なし