Development of a roll-to-roll high-speed laser micro processing machine for preparing through-holed anodes and cathodes of lithium-ion batteries  

作　　者：Mitsuru Yamada Naohiko Soma Masaya Tsuta Susumu Nakamura Nobuo Ando Futoshi Matsumoto 

机构地区：[1]Department of Materials and Life Chemistry,Kanagawa University,3-27-1,Rokkakubashi,Kanagawa-ku,Yokohama,Kanagawa221-8686,Japan [2]Wired Co.,Ltd,2-4-15kitashinbo,Sanjo,Niigata955-0861,Japan [3]Department of Electrical and Electronic Systems Engineering,National Institute of Technology,Nagaoka College,888Nishikatakai,Nagaoka,Niigata940-8532,Japan [4]Research Institute for Engineering,Kanagawa University,3-27-1,Rokkakubashi,Kanagawa-ku,Yokohama,Kanagawa221-8686,Japan

出　　处：《International Journal of Extreme Manufacturing》2023年第3期534-546,共13页极端制造（英文）

基　　金：supported by‘Advanced Research Infrastructure for Materials and Nanotechnology in Japan(ARIM)’of the Ministry of Education,Culture,Sports,Science and Technology(MEXT).Proposal Number 22KU0036。

摘　　要：Aiming to improve the battery performance of lithium-ion batteries(LIBs),modification of the cathodes and anodes of LIBs using laser beams to prepare through-holes,non-through-holes or ditches arranged in grid and line patterns has been proposed by many researchers and engineers.In this study,a laser processing system attached to rollers,which realizes this modification without large changes in the present mass-production system,was developed.The laser system apparatus comprises roll-to-roll equipment and laser equipment.The roll-to-roll equipment mainly consists of a hollow cylinder with openings on its circumferential surface.Cathode and anode electrodes for LIBs are wound around the cylinder in the longitudinal direction of the electrodes.A pulsed beam reflected from the central axis of the cylinder can continuously open a large number of through-holes in the thin electrodes.Through-holes were formed at a rate of 100000 holes per second on lithium iron phosphate cathodes and graphite anodes with this system.The through-holed cathodes and anodes prepared with this system exhibited higher C-rate performance than nontreated cathodes and anodes.

关 键 词：LITHIUM-IONBATTERIES laser processingsystem roll-to-roll system through-holing structure high-rate performance 

分 类 号：TM9[电气工程—电力电子与电力传动]