Nickel phosphate molecular sieve as electrochemical capacitors material
Nickel phosphate molecular sieve as electrochemical capacitors material
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DOI：
10.1016/j.jpowsour.2014.03.033
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发表时间：
2014-08
影响因子：
9.2
通讯作者：
Jing-He Yang;Juan Tan;Ding Ma
中科院分区：
文献类型：
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作者：
Jing-He Yang;Juan Tan;Ding Ma
采用循环伏安法和计时电位法研究了磷酸镍分子筛VSB-5作为超级电容器电极材料在碱性介质中的性能。VSB-5具有较高的比电容和优良的循环稳定性。当电流密度为3áAág−1时，VSB-5的比电容为2740áFág−1，在30áAág−1下循环3000次后，库仑效率没有显著降低。与介孔磷酸镍、多孔氢氧化镍和介孔氧化镍相比，VSB-5的优异电化学性能将使磷酸镍材料成为一种有前景的高性能超级电容器新型电极材料。
The nickel phosphate molecular sieve VSB-5 as an electrode material for supercapacitors is investigated by cyclic voltammetry (CV) and chronopotentiometry in alkaline media. The VSB-5 shows high specific capacitance and excellent cycling stability. The specific capacitance of VSB-5 is 2740áFág−1at a current density of 3áAág−1and there is no significant reduction in Coulombic efficiency after 3000 cycles at 30áAág−1. In comparison with mesoporous nickel phosphate NiPO, porous nickel hydroxide and mesoporous nickel oxide, this remarkable electrochemical performance of VSB-5 will make nickel phosphate material a promising new electrode material for high performance supercapacitors.