3D Mesoporous Ni(OH)(2)/WS2 Nanofibers with Highly Enhanced Performances for Hybrid Supercapacitors
3D Mesoporous Ni(OH)(2)/WS2 Nanofibers with Highly Enhanced Performances for Hybrid Supercapacitors
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用于混合超级电容器的具有高度增强性能的 3D 介孔 Ni(OH)(2)/WS2 纳米纤维
DOI：
10.1002/ente.201800476
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发表时间：
2019
影响因子：
3.8
通讯作者：
Wang Ye
中科院分区：
文献类型：
--
作者：
Jiang Zimin;Xu Tingting;Dai Shuge;Yan Congcong;Ma Caiyun;Wang Xinchang;Xu Junmin;Zhang Sen;Wang Ye
通过静电纺丝和随后的水热工艺合成了由纳米片组成的3D Ni（OH）2/二硫化钨（WS 2）纳米纤维，其具有64.56 m2 g −1的大比表面积。当在三电极配置中进行测试时，WS 2/Ni（OH）2 O基电极在1 A g−1的电流密度下表现出354 C g− 1的高比容量。其中WS 2/Ni（OH）2纳米纤维和石墨烯分别用作正极和负极的混合存储装置在940 W kg-1的功率密度下表现出34 Wh kg-1的高能量密度，并且在4A g-1下4000次循环后表现出83%的高容量保持率。合成的3D Ni（OH）2/WS 2纳米纤维为WS 2纳米结构提供了一种方法，以优化其在构建高性能储能装置中的可行性和潜力。
3D Ni(OH)2/tungsten disulfide (WS2) nanofibers composed of ultrathin nanoflakes are synthesized by electrospinning followed by a hydrothermal process, which have a large specific surface of 64.56 m2g−1. When tested in a three‐electrode configuration, the WS2/Ni(OH)2nanofiber‐based electrode exhibits a high specific capacity of 354 C g−1at a current density of 1 A g−1. The hybrid storage device, in which WS2/Ni(OH)2nanofibers and graphene are used as the positive and negative electrodes, respectively, exhibits a high energy density of 34 Wh kg−1at a power density of 940 W kg−1and a high capacity retention of 83% after 4000 cycles at 4 A g−1. The as‐synthesized 3D Ni(OH)2/WS2nanofibers provide a way for the WS2nanostructure to optimize its viability and potential in constructing a high‐performance energy storage device.