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- Kim, Youngsik
- YK Research
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Mesoporous Ge/GeO2/Carbon Lithium-Ion Battery Anodes with High Capacity and High Reversibility
- Author(s)
- Hwang, Jongkook, Jo, Changshin, Kim, Min Gyu, Chun, Jinyoung, Lim, Eunho, Kim, Seongseop, Jeong, Sanha, Kim, Youngsik, Lee, Jinwoo
- Issued Date
- 2015-05
- Citation
- ACS NANO, v.9, no.5, pp.5299 - 5309
- Abstract
- We report mesoporous composite materials (m-GeO2, m-GeO2/C, and m-Ge-GeO2/C) with large pore size which are synthesized by a simple block copolymer directed self-assembly. m-Ge/GeO(2)2/C shows greatly enhanced Coulonnbic efficiency, high reversible capacity (1631 mA h g(-1)), and stable cycle life compared with the other mesoporous and bulk GeO2 electrodes. m-Ge/GeO2/C exhibits one of the highest areal capacities (1.65 mA h cm(-2)) among previously reported Ge- and GeO2-based anodes. The superior electrochemical performance in m-Ge/GeO2/C arises from the highly improved kinetics of conversion reaction due to the synergistic effects of the mesoporous structures and the conductive carbon and metallic Ge
- Publisher
- AMER CHEMICAL SOC
- ISSN
- 1936-0851
- Keyword (Author)
- germanium oxide, mesoporous materials, block copolymer, catalytic function, lithium-ion batteries
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