Charge-discharge characteristics of a layered-structure electroplated Cu/Sn anode for Li-ion batteries |
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Authors: | JungWon Park HyukSang Kwon |
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Affiliation: | Department of Materials Science & Engineering, KAIST, 373-1, Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea |
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Abstract: | An electroplated copper/tin (Cu/Sn) anode with a layered structure is described that minimizes the high-voltage irreversible capacity observed in an electroplated Sn anode at a potential over 1 V. The high-voltage irreversible capacity is caused by the electrolyte decomposition at the catalytic site of the Sn anode. In the electroplated Cu/Sn anode, the upper Cu layer effectively suppresses the exposure of the newly formed Sn surfaces, resulting in the absence of the high-voltage irreversible capacity. Therefore, the electroplated Cu/Sn anode exhibits a higher cycle performance than the electroplated Sn anode. |
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Keywords: | Sn anode Cu anode Electroplating High-voltage irreversible capacity Li-ion battery |
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