Amorphous Ni-P materials for high performance pseudocapacitors
Amorphous Ni-P materials for high performance pseudocapacitors
复制标题
用于高性能赝电容器的非晶Ni-P材料
DOI：
10.1016/j.jpowsour.2014.10.179
复制
发表时间：
2015-01-15
影响因子：
9.2
通讯作者：
Kang, Long
中科院分区：
文献类型：
--
作者：
Wang, Dan;Kong, Ling-Bin;Kang, Long
在众多的活性电极材料中，磷化镍作为一种很有前途的超级电容器电极材料受到了广泛的关注。本工作采用简单的溶剂热法成功地合成了具有良好电化学性能的非晶态Ni-P，并将其用作碱性电解液中的伪电容材料。与晶态Ni-P材料相比，非晶态Ni-P材料在0.5Ag(-1)的电流密度下表现出1597Fg(-1)的大比容和良好的循环稳定性(1000次循环后仍保持71.4%)。AC/Ni-P非对称电容器可在0-1.6V的高压区进行可逆循环，在5 mV S(-1)下的比电容为105Fg(-1)。这种优异的性能使非晶态Ni-P合金有望成为超级电容器的电极材料。(C)2014爱思唯尔B.V.保留所有权利。
Among numerous active electrode materials, nickel phosphides have received extensive attention as promising electrode materials for supercapacitors. In this work, amorphous Ni-P with excellent electrochemical behaviors are successfully synthesized by a facile solvothermal method and served as pseudocapacitive materials in alkaline electrolyte. Compared to the crystalline Ni-P materials, the amorphous Ni-P exhibit a large specific capacitance of 1597 F g(-1) at a current density of 0.5 A g(-1) and good cycling stability (71.4% retained after 1000 cycles). An AC//Ni-P asymmetric capacitor could be cycled reversibly in the high-voltage region of 0-1.6 V, and the specific capacitance of 105 F g(-1) at 5 mV s(-1). The excellent performance makes amorphous Ni-P promising electrode materials for supercapacitors. (C) 2014 Elsevier B.V. All rights reserved.