Kim, In-Chul Byun, Dongjin Lee, Joong Kee 2024-01-21T02:02:45Z 2024-01-21T02:02:45Z 2021-09-01 2006-12 1385-3449 https://pubs.kist.re.kr/handle/201004/134925 Four kinds of silicon-metals (Cu, Ni, Sn)-graphite composites for anode active materials of lithium secondary batteries were prepared by sequential employment of PECVD (Plasma enhance chemical vapor deposition) and RF(Radio-frequency)-magnetron sputtering method. The silicon-copper-graphite composite showed the highest reversible capacity and cyclability among the silicon-metal composite graphite samples prepared. The enhanced electrochemical performance of silicon-copper-graphite composite is attributed to the formation of copper silicide on the surface of graphite. The copper silicide plays an important role as a buffering layer against volume change of silicon during the intercalation/deintercalation due to the chemical bonding of silicon and copper, and has lower interfacial impedance than that of other silicon-metal-graphite composites which may lead to low irreversible capacity. English SPRINGER Electrochemical characteristics of silicon-metals coated graphites for anode materials of lithium secondary batteries Article 10.1007/s10832-006-0386-z 1 JOURNAL OF ELECTROCERAMICS, v.17, no.2-4, pp.661 - 665 JOURNAL OF ELECTROCERAMICS 17 2-4 661 665 scie scopus 000243610600099 2-s2.0-33847179178 Materials Science, Ceramics Materials Science Article; Proceedings Paper Lithium ion battery PECVD Anode Metal-silicide