RESIN CURRENT COLLECTOR

• Main Authors: ISO TAKEHIRO, ONISHI KAZUAKI, KUSANO RYOSUKE, HORIE HIDEAKI, NONAKA HIROYUKI, MARUYAMA KYOSHI, TSUDO YASUHIRO, FUKUYAMA SONOMI, KUDO SHUN
• Format: Patent
• Language: English; Japanese
• Published: 03.06.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a resin current collector having improved tear strength.SOLUTION: A resin current collector is a current collector for a positive electrode of a lithium-ion battery. The resin current collector includes a polyolefin resin and a conductive carbon filler. In the resin current collector, a value obtained by dividing the yield point strength in TD (Traverse Direction) by the yield point strength in MD (Machine Direction) is 0.75 or more and 1.10 or less, and a ten point average roughness Rz in TD is less than 4 μm.SELECTED DRAWING: None 【課題】引裂強度が改善された樹脂集電体を提供する。【解決手段】樹脂集電体は、リチウムイオン電池の正極用の集電体である。この樹脂集電体は、ポリオレフィン樹脂と、導電性炭素フィラーとを含む。この樹脂集電体においては、ＴＤ（Traverse Direction）における降伏点強度をＭＤ（Machine Direction）における降伏点強度で除算した値が、０．７５以上、１．１０以下であり、ＴＤにおける十点平均粗さＲｚが４μｍ未満である。【選択図】なし