Sodium ion insertion in hollow carbon nanowires for battery applications.
作者： Yuliang Cao , Lifen Xiao , Maria L. Sushko , Wei Wang , Birgit Schwenzer
DOI: 10.1021/NL3016957
关键词:
摘要: Hollow carbon nanowires (HCNWs) were prepared through pyrolyzation of a hollow polyaniline nanowire precursor. The HCNWs used as anode material for Na-ion batteries deliver a high reversible capacity of 251 mAh g–1 and 82.2% capacity retention over 400 charge–discharge cycles between 1.2 and 0.01 V (vs Na+/Na) at a constant current of 50 mA g–1 (0.2 C). Excellent cycling stability is also observed at an even higher charge–discharge rate. A high reversible capacity of 149 mAh g–1 also can be obtained at a current rate of 500 …
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