Controlled growth of NiMoO4·H2O nanoflake and nanowire arrays on Ni foam for superior performance of asymmetric supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67785-67793 ◽  
Author(s):  
Chen Qing ◽  
Yanan Liu ◽  
Xiaodan Sun ◽  
Xiaxia OuYang ◽  
Hai Wang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Nanowire Arrays ◽  
Superior Performance ◽  
Controlled Growth ◽  
Ni Foam ◽  
Asymmetric Supercapacitors

Hydrous NiMoO4 nanoflake arrays on Ni foam show superior cycle ability and specific capacitance.

Facile Hydrothermal Synthesis and Electrochemical Performance of NiCo2O4 Nanoneedles

2020 ◽  
Vol 15 (2) ◽  
pp. 164-170
Author(s):  
Duo Cui ◽  
Rongda Zhao ◽  
Jun Xiang ◽  
Fufa Wu ◽  
Lijun Xin ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Spatial Structure ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Retention Rate ◽  
Cyclic Stability ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Hybrid Supercapacitors ◽  
One Step

NiCo2O4 nanoneedles on the surface of Ni foam were grown by a simple one step hydrothermal method, which is used as the working electrode for asymmetric supercapacitors. Its area specific capacitance is 981.64 C cm–2 at 1 mA cm–2, and the cycling stability can reach 100% after 10000 cycles at 4 mA cm–2. The spatial structure of the nanoneedle has important influence on the cyclic stability of NiCo2O4 electrode. The hybrid supercapacitors are prepared on the basis of the prepared NiCo2O4 nanoneedle electrodes. After 8000 cycles, its cycle life is stable and the capacitance retention rate reaches 100%.

Constructing hierarchical dandelion-like molybdenum–nickel–cobalt ternary oxide nanowire arrays on carbon nanotube fiber for high-performance wearable fiber-shaped asymmetric supercapacitors

2017 ◽  
Vol 5 (40) ◽  
pp. 21153-21160 ◽  
Author(s):  
Juan Sun ◽  
Qichong Zhang ◽  
Xiaona Wang ◽  
Jingxin Zhao ◽  
Jiabin Guo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Nanowire Arrays ◽  
Ternary Oxide ◽  
Asymmetric Supercapacitors ◽  
Carbon Nanotube Fiber ◽  
Nickel Cobalt

The fabricated electrode delivers high specific capacitance and is applied to fiber-shaped asymmetric supercapacitors.

scholarly journals Advanced binder-free electrodes based on CoMn2O4@Co3O4 core/shell nanostructures for high-performance supercapacitors

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31594-31602 ◽  
Author(s):  
Xiaobo Chen ◽  
Xiao Liu ◽  
Yongxu Liu ◽  
Yameng Zhu ◽  
Guoce Zhuang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Cycling Stability ◽  
Core Shell ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Shell Nanostructures ◽  
Binder Free

CoMn2O4@Co3O4 core/shell arrays on Ni foam exhibit outstanding electrochemical performance for asymmetric supercapacitors with respect to high specific capacitance and high cycling stability.

Integrated copper–nickel oxide mesoporous nanowire arrays for high energy density aqueous asymmetric supercapacitors

2016 ◽  
Vol 1 (2) ◽  
pp. 150-155 ◽  
Author(s):  
Ruizhi Li ◽  
Zhijun Lin ◽  
Xin Ba ◽  
Yuanyuan Li ◽  
Ruimin Ding ◽  
...  
Keyword(s):  
Energy Density ◽  
Nickel Oxide ◽  
Specific Capacitance ◽  
High Performance ◽  
Nanowire Array ◽  
High Specific Capacitance ◽  
High Energy ◽  
Nanowire Arrays ◽  
High Energy Density ◽  
Asymmetric Supercapacitors

An integrated (Cu,Ni)O mesoporous nanowire array that delivers a high specific capacitance has been used to construct high-performance aqueous asymmetric supercapacitors of (Cu,Ni)O(+)//AC(−).

Hybrid MnO2@NiCo2O4 nanosheets for high performance asymmetric supercapacitors

2018 ◽  
Vol 5 (6) ◽  
pp. 1378-1385 ◽  
Author(s):  
Depeng Zhao ◽  
Xiang Wu ◽  
Chuanfei Guo
Keyword(s):  
Specific Capacitance ◽  
Current Density ◽  
High Performance ◽  
High Specific Capacitance ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Hydrothermal Approach ◽  
Nico2o4 Nanosheets ◽  
A Current

In this work, hybrid MnO2@NiCo2O4 nanosheets grown on Ni foam have been synthesized through a facile hydrothermal approach. The MnO2@NiCo2O4 electrode delivers a high specific capacitance of 3086 mF cm−2 at a current density of 2 mA cm−2.

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