Three-dimensional cotton-like nickel nanowire@Ni-Co hydroxide nanosheet arrays as binder-free electrode for high-performance asymmetric supercapacitor

被引：24
|
作者：
Wan, Houzhao [1 ]
Li, Lang [1 ]
Xu, Yang [1 ]
Tan, Qiuyang [1 ]
Liu, Xiang [1 ]
Zhang, Jun [1 ]
Wang, Hanbin [1 ]
Wang, Hao [1 ]
机构：
[1] Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Hubei, Peoples R China
来源：
NANOTECHNOLOGY | 2018年 / 29卷 / 19期
基金：
中国国家自然科学基金;
关键词：
nickel-cobalt layered double hydroxide; nickel nanowire; cotton-like; nanosheet; supercapacitor; LAYERED DOUBLE HYDROXIDE; NANOTUBE ARRAYS; HYBRID; FOAM; FABRICATION; COMPOSITE; SHELL; FILMS;
D O I：
10.1088/1361-6528/aab129
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Three-dimensional (3D) cotton-like Ni-Co layered double hydroxide nanosheet arrays/nickel nanowires (3D Ni-Co LDH/NiNw) were successfully fabricated through a facile chemical bath deposition method. The 3D nickel nanowires are used as a conductive substrate with robust adhesion for high-pseudocapacitance Ni-Co LDH. The 3D Ni-Co LDH/NiNw electrode shows a high areal specific capacitance of 14 F cm(-2) at 5 mA cm(-2) and quality specific capacitance of 466.6 F g(-1) at 0.125 A g(-1) with respect to the whole quality of the electrode. The fabricated asymmetric supercapacitor exhibits a remarkable energy density of 0.387 mWh cm(-2) using Ni-Co LDH/NiNw as the negative electrode. This high-performance composite electrode presents a new and affordable general approach for supercapacitors.
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页数：9
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