Lee, Gwang-Hee Kwon, S. Joon Park, Kyung-Soo Kang, Jin-Gu Park, Jae-Gwan Lee, Sungjun Kim, Jae-Chan Shim, Hyun-Woo Kim, Dong-Wan 2024-01-20T08:31:58Z 2024-01-20T08:31:58Z 2021-08-31 2014-11-03 2045-2322 https://pubs.kist.re.kr/handle/201004/126139 We demonstrate a new design of Ge-based electrodes comprising three-dimensional (3-D) spherical microflowers containing crystalline nanorod networks on sturdy 1-D nanostems directly grown on a metallic current collector by facile thermal evaporation. The Ge nanorod networks were observed to self-replicate their tetrahedron structures and form a diamond cubic lattice-like inner network. After etching and subsequent carbon coating, the treated Ge nanostructures provide good electrical conductivity and are resistant to gradual deterioration, resulting in superior electrochemical performance as anode materials for LIBs, with a charge capacity retention of 96% after 100 cycles and a high specific capacity of 1360 mA h g(-1) at 1 C and a high-rate capability with reversible capacities of 1080 and 850 mA h g(-1) at the rates of 5 and 10 C, respectively. The improved electrochemical performance can be attributed to the fast electron transport and good strain accommodation of the carbon-filled Ge microflower-on-nanostem hybrid electrode. English NATURE PUBLISHING GROUP LARGE-SCALE SYNTHESIS HETEROEPITAXIAL GROWTH CARBON NANOTUBES ANODES FILMS NANOWIRES NANORODS Germanium microflower-on-nanostem as a high-performance lithium ion battery electrode Article 10.1038/srep06883 1 SCIENTIFIC REPORTS, v.4 SCIENTIFIC REPORTS 4 scie scopus 000344228600001 2-s2.0-84924248868 Multidisciplinary Sciences Science & Technology - Other Topics Article LARGE-SCALE SYNTHESIS HETEROEPITAXIAL GROWTH CARBON NANOTUBES ANODES FILMS NANOWIRES NANORODS batteries nanowires germanium germanium oxide microsphere