Facile Synthesis of Peapod-Like Cu3Ge/Ge@C as A High Capacity and Long Life Anode for Li-Ion Batteries.
作者:Liu, Jun; Wang, Xinyi; Xu, Xijun; Liu, Zhengbo; Shen, Jiadong; Li, Fangkun; Hu, Renzong; Yang, Lichun; Ouyang, Liuzhang; Zhu, Min
Chemistry (Weinheim an der Bergstrasse, Germany)
DOI:10.1002/chem.201901629
出版年: 2019-Jun-24 (Epub 2019 Jun 24)
文献类型:Journal Article
摘要
To obtain anode materials for high performance Li-ion batteries, peapod-like Ge-based composites, including Ge, a Li-inactive conducting Cu3Ge, and porous carbon matrix are simply synthesized by annealing CuGeO3@dopamine in the H2/Ar atmosphere. The introduction of carbon layer and inactive alloying phase Cu3Ge not only enhances the electrical conductivity of Ge anode, but also reduces the volume change of Ge during the cell cycle as a buffer. In particular, the anode of peapod-like Cu3Ge/Ge@C shows excellent long cycle life as well as outstanding capacity performance (the discharge specific capacity could be still up to 934 mA h g-1 after 500 cycles).
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
关键词
关键词列表:Anode; Li-ion batteries; alloying anode; germanium; peapod-like structure
作者信息
地址:South China University of Technology, School of Materials Science and Engineering, Guangzhou, 510641, PR China, 510641, Guangzhou, CHINA.
Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, PR China, CHINA.
Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, PR China., CHINA.
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