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http://dx.doi.org/10.4191/kcers.2017.54.5.07

Nanowire-Like Copper Oxide Grown on Porous Copper, a Promising Anode Material for Lithium-Ion Battery  

Park, Hyeji (School of Materials Science and Engineering, Kookmin University)
Lee, Sukyung (School of Materials Science and Engineering, Kookmin University)
Jo, Minsang (Department of Energy & Mineral Resources Engineering, Sejong University)
Park, Sanghyuk (Department of Energy & Mineral Resources Engineering, Sejong University)
Kwon, Kyungjung (Department of Energy & Mineral Resources Engineering, Sejong University)
Shobana, M.K. (Department of Physics, School of Advanced Sciences, VIT University)
Choe, Heeman (School of Materials Science and Engineering, Kookmin University)
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Abstract
This paper reports the facile synthesis of microlamella-structured porous copper (Cu)-oxide-based electrode and its potential application as an advanced anode material for lithium-ion batteries (LIBs). Nanowire-like Cu oxide, which is created by a simple thermal oxidation process, is radially and uniformly formed on the entire surface of Cu foam that has been fabricated using a combination of water-based slurry freezing and sintering (freeze casting). Compared to the Cu foil with a Cu oxide layer grown under the same processing conditions, the Cu foam anode with 63% porosity exhibits over twice as much capacity as the Cu foil (264.2 vs. 131.1 mAh/g at 0.2 C), confirming its potential for use as an anode electrode for LIBs.
Keywords
Cu oxide; Cu foam; Freezing casting; Thermal oxidation; Lithium-ion battery;
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