US 12,015,140 B2
Method for producing resin collector for negative electrodes, method for producing negative electrode for lithium ion batteries, and method for producing lithium ion battery
Ryosuke Kusano, Kyoto (JP); Yasuhiro Tsudo, Kyoto (JP); Yasuji Maruyama, Shiga (JP); Kazuaki Onishi, Shiga (JP); Yasuhiko Ohsawa, Kanagawa (JP); Yuki Kusachi, Kanagawa (JP); Hajime Satou, Kanagawa (JP); Hiroshi Akama, Kanagawa (JP); and Hideaki Horie, Kanagawa (JP)
Assigned to SANYO CHEMICAL INDUSTRIES, LTD., Kyoto (JP); and GUNZE LIMITED, Kyoto (JP)
Appl. No. 17/285,682
Filed by SANYO CHEMICAL INDUSTRIES, LTD., Kyoto (JP); and GUNZE LIMITED, Kyoto (JP)
PCT Filed Oct. 21, 2019, PCT No. PCT/JP2019/041282
§ 371(c)(1), (2) Date Apr. 15, 2021,
PCT Pub. No. WO2020/085290, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 2018-198530 (JP), filed on Oct. 22, 2018.
Prior Publication US 2021/0408525 A1, Dec. 30, 2021
Int. Cl. H01M 4/139 (2010.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/21 (2019.01); H01M 4/04 (2006.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); B29K 505/08 (2006.01); B29L 31/34 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/139 (2013.01) [B29C 48/001 (2019.02); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 48/21 (2019.02); H01M 4/04 (2013.01); H01M 4/667 (2013.01); H01M 4/668 (2013.01); H01M 10/0525 (2013.01); B29K 2505/08 (2013.01); B29K 2995/0005 (2013.01); B29L 2031/3468 (2013.01); H01M 2004/027 (2013.01)] 6 Claims
 
1. A method for producing a sheet-shaped resin current collector for negative electrodes, comprising
stacking three or more layers of melts of conductive resin compositions each containing a polyolefin and a conductive filler to obtain a multilayered body,
wherein the polyolefin contained in each of the conductive resin compositions that form the respective layers of the multilayered body has a melt mass flow rate of 15 to 70 g/10 min as measured at a temperature of 230° C. and a load of 2.16 kg in accordance with JIS K7210-1:2014, and
wherein the multilayered body includes a layer of a conductive resin composition containing nickel particles as the conductive filler and a layer of a conductive resin composition containing a conductive carbon as the conductive filler.