Hierarchical CuAl-layered double hydroxide/CoWO4 nanocomposites with enhanced efficiency for use in supercapacitors with long cycling stability

2019 ◽  
Vol 43 (38) ◽  
pp. 15240-15248 ◽  
Author(s):  
Soheila Sanati ◽  
Zolfaghar Rezvani ◽  
Reza Abazari ◽  
Zhiquan Hou ◽  
Hongxing Dai
Keyword(s):  
Energy Density ◽  
Power Density ◽  
Layered Double Hydroxide ◽  
Cycling Stability ◽  
Asymmetric Supercapacitor ◽  
Double Hydroxide

A CuAl-LDH/CoWO4 nanocomposite was used in an asymmetric supercapacitor, providing 35.87 W h kg−1 energy density and 10 188 W kg−1 power density.

A high energy density asymmetric supercapacitor based on a CoNi-layered double hydroxide and activated carbon

Carbon ◽  
2016 ◽  
Vol 100 ◽  
pp. 710 ◽  
Author(s):  
Li-jing Xie ◽  
Guo-hua Sun ◽  
Long-fei Xie ◽  
Fang-yuan Su ◽  
Xiao-ming Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Layered Double Hydroxide ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Double Hydroxide

A high energy density asymmetric supercapacitor based on a CoNi-layered double hydroxide and activated carbon

2016 ◽  
Vol 31 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Li-jing Xie ◽  
Guo-hua Sun ◽  
Long-fei Xie ◽  
Fang-yuan Su ◽  
Xiao-ming Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Layered Double Hydroxide ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Double Hydroxide

A super-high energy density asymmetric supercapacitor based on 3D core–shell structured NiCo-layered double hydroxide@carbon nanotube and activated polyaniline-derived carbon electrodes with commercial level mass loading

2015 ◽  
Vol 3 (25) ◽  
pp. 13244-13253 ◽  
Author(s):  
Xiaocheng Li ◽  
Juanjuan Shen ◽  
Wei Sun ◽  
Xuda Hong ◽  
Rutao Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Density ◽  
Layered Double Hydroxide ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Electrodes ◽  
Core Shell ◽  
Asymmetric Supercapacitor ◽  
Mass Loading ◽  
Double Hydroxide

An asymmetric supercapacitor device with an energy density of 89.7 W h kg−1 at commercial level mass loading was successfully fabricated.

Facile fabrication of Co2CuS4 nanoparticle anchored N-doped graphene for high-performance asymmetric supercapacitors

2016 ◽  
Vol 4 (44) ◽  
pp. 17560-17571 ◽  
Author(s):  
Meng Guo ◽  
Jayaraman Balamurugan ◽  
Tran Duy Thanh ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Power ◽  
High Performance ◽  
Cycling Stability ◽  
Asymmetric Supercapacitor ◽  
High Power Density ◽  
Asymmetric Supercapacitors ◽  
Doped Graphene ◽  
Facile Fabrication

A novel Co2CuS4/NG composite based asymmetric supercapacitor delivers superb energy density (~53.3 W h kg−1), high power density (~10936 W kg−1 at 38.4 W h kg−1) and outstanding cycling stability (~4000 cycles).

scholarly journals Na0.76V6O15/Activated Carbon Hybrid Cathode for High-Performance Lithium-Ion Capacitors

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 122
Author(s):  
Renwei Lu ◽  
Xiaolong Ren ◽  
Chong Wang ◽  
Changzhen Zhan ◽  
Ding Nan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Power Density ◽  
Cathode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Artificial Graphite

Lithium-ion hybrid capacitors (LICs) are regarded as one of the most promising next generation energy storage devices. Commercial activated carbon materials with low cost and excellent cycling stability are widely used as cathode materials for LICs, however, their low energy density remains a significant challenge for the practical applications of LICs. Herein, Na0.76V6O15 nanobelts (NaVO) were prepared and combined with commercial activated carbon YP50D to form hybrid cathode materials. Credit to the synergism of its capacitive effect and diffusion-controlled faradaic effect, NaVO/C hybrid cathode displays both superior cyclability and enhanced capacity. LICs were assembled with the as-prepared NaVO/C hybrid cathode and artificial graphite anode which was pre-lithiated. Furthermore, 10-NaVO/C//AG LIC delivers a high energy density of 118.9 Wh kg−1 at a power density of 220.6 W kg−1 and retains 43.7 Wh kg−1 even at a high power density of 21,793.0 W kg−1. The LIC can also maintain long-term cycling stability with capacitance retention of approximately 70% after 5000 cycles at 1 A g−1. Accordingly, hybrid cathodes composed of commercial activated carbon and a small amount of high energy battery-type materials are expected to be a candidate for low-cost advanced LICs with both high energy density and power density.

Flexible high-energy asymmetric supercapacitors based on MnO@C composite nanosheet electrodes

2017 ◽  
Vol 5 (2) ◽  
pp. 804-813 ◽  
Author(s):  
Neng Yu ◽  
Kai Guo ◽  
Wei Zhang ◽  
Xianfu Wang ◽  
Ming-Qiang Zhu
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Energy ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Positive Electrodes

A flexible asymmetric supercapacitor assembled with novel MnO@C composite nanosheets and Co3O4 nanosheets as negative and positive electrodes achieves an exceptional energy density of 59.6 W h kg−1 at a power density of 1529.8 W kg−1.

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