Acicular NiS-Ni derived from a low temperature sulfuration method as freestanding electrode for sodium-ion batteries
Acicular NiS-Ni derived from a low temperature sulfuration method as freestanding electrode for sodium-ion batteries
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DOI：
10.1016/j.matlet.2017.11.061
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发表时间：
2018-02
影响因子：
3
通讯作者：
Chen Qichang;Shibing Ni;Tang Jun;Tao Li;K. Tao;Xuelin Yang
中科院分区：
文献类型：
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作者：
Chen Qichang;Shibing Ni;Tang Jun;Tao Li;K. Tao;Xuelin Yang
以泡沫镍为原料，采用低温硫化法成功制备了泡沫镍上针状硫化镍。所制备的NiS-Ni电极作为半电池和全电池钠离子电池的独立阳极具有上级电化学性能。在0.03 A g−1的比电流下，其初始放电和充电容量分别为1368.8和813.6 mAh g−1，50次循环后保持在504.8和497.4 mAh g− 1。在0.05至0.4 A g-1的各种比电流下循环50次后，当比电流恢复至0.05 A g-1时，放电容量可恢复至570.6 mAh g-1。当与Na 3V 2（PO 4）3阴极匹配时，全电池在0.05 A g-1的比电流下100次循环后显示出172.8和163.5 mAh g-1的充放电容量。
Acicular NiS on Ni foam was successfully prepared via a low temperature sulfuration method, using Ni foam as raw material. The as-prepared NiS-Ni electrode exhibits superior electrochemical performance as freestanding anode for half-cell and full-cell sodium-ion batteries. At a specific current of 0.03 A g−1, it delivers initial discharge and charge capacities of 1368.8 and 813.6 mAh g−1, maintaining of 504.8 and 497.4 mAh g−1after 50 cycles. After 50 cycles at various specific current from 0.05 to 0.4 A g−1, the discharge capacity can restore to 570.6 mAh g−1when reverting specific current to 0.05 A g−1. When matching with Na3V2(PO4)3cathode, the full cell shows charge and discharge capacities of 172.8 and 163.5 mAh g−1after 100 cycles at a specific current of 0.05 A g−1.