Ko, Young-Dae Kang, Jin-Gu Lee, Gwang-Hee Park, Jae-Gwan Park, Kyung-Soo Jin, Yun-Ho Kim, Dong-Wan 2024-01-20T16:33:41Z 2024-01-20T16:33:41Z 2021-09-04 2011-08 2040-3364 https://pubs.kist.re.kr/handle/201004/130152 We herein present the synthesis of germanium (Ge) nanowires on Au-catalyzed low-temperature substrates using a simple thermal Ge/Sn co-evaporation method. Incorporation of a low-melting point metal (Sn) enables the efficient delivery of Ge vapor to the substrate, even at a source temperature below 600 degrees C. The as-synthesized nanowires were found to be a core/shell heterostructure, exhibiting a uniform single crystalline Ge sheathed within a thin amorphous germanium suboxide (GeOx) layer. Furthermore, these high-density Ge nanowires grown directly on metal current collectors can offer good electrical connection and easy strain relaxation due to huge volume expansion during Li ion insertion/extraction. Therefore, the self-supported Ge nanowire electrodes provided excellent large capacity with little fading upon cycling (a capacity of similar to 900 mA h g(-1) at 1C rate). English ROYAL SOC CHEMISTRY ION-BATTERY ANODES GERMANIUM NANOWIRES Sn-induced low-temperature growth of Ge nanowire electrodes with a large lithium storage capacity Article 10.1039/c1nr10471c 1 NANOSCALE, v.3, no.8, pp.3371 - 3375 NANOSCALE 3 8 3371 3375 scie scopus 000293521700055 2-s2.0-80051588257 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article ION-BATTERY ANODES GERMANIUM NANOWIRES germanium nanowires Li ion battery anodes