Chemical reduction of nano-scale Cu2Sb powders as anode materials for Li-ion batteries |
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Authors: | Jianguo Ren Weihua Pu Changyin Jiang Chunrong Wan |
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Affiliation: | Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, PR China |
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Abstract: | A novel process was attempted to prepare nano-scale Cu2Sb alloy powders as anode materials for Li-ion batteries. The preparation started with chemical reduction of Cu2Sb in an aqueous solution with sodium citrate as a complexing agent and KBH4 as a reducer. The analysis of scanning electron microscopy and X-ray diffraction showed that as-prepared nano-scale Cu2Sb powders presented tetragonal structure with particle size of 50-70 nm. Cycling between 0 and 1.2 V, the nano-scale Cu2Sb alloy showed good cyclability with a stable specific capacity of 200 mAh g−1 within 25 cycles. |
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Keywords: | Cu2Sb alloy anode Chemical reduction Nano-scale Li-ion batteries |
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