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Catalyst‐free Direct Growth of a Single to a Few Layers of Graphene on a Germanium Nanowire for the Anode Material of a Lithium Battery
Author(s) -
Kim Hyungki,
Son Yoonkook,
Park Chibeom,
Cho Jaephil,
Choi Hee Cheul
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201300896
Subject(s) - germanium , anode , graphene , materials science , chemical vapor deposition , nanowire , battery (electricity) , catalysis , nanowire battery , lithium (medication) , lithium ion battery , electrode , nanotechnology , optoelectronics , chemical engineering , chemistry , lithium vanadium phosphate battery , silicon , medicine , power (physics) , physics , quantum mechanics , endocrinology , biochemistry , engineering
Direct growth of a single to a few layers of graphene on a germanium nanowire (Gr/Ge NW; see picture) was achieved by a metal‐catalyst‐free chemical vapor deposition (CVD) process. The Gr/Ge NW was used as anode in a lithium ion battery. This material has a specific capacity of 1059 mA h g −1 at 4.0 C, a long cycle life over 200 cycles, and a high capacity retention of 90 %.