Freestanding and flexible graphene wrapped MnO2/MoO3 nanoparticle based asymmetric supercapacitors for high energy density and output voltage

RSC Advances ◽  
2015 ◽  
Vol 5 (56) ◽  
pp. 45129-45135 ◽  
Author(s):  
Congxing Yang ◽  
Yuling Shi ◽  
Nishuang Liu ◽  
Jiayou Tao ◽  
Siliang Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Output Voltage ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Asymmetric Supercapacitors ◽  
Good Cycling Stability

Freestanding and flexible asymmetric supercapacitors with good cycling stability.

A three-dimensional graphene framework-enabled high-performance stretchable asymmetric supercapacitor

2018 ◽  
Vol 6 (4) ◽  
pp. 1802-1808 ◽  
Author(s):  
Ke Li ◽  
Yanshan Huang ◽  
Jingjing Liu ◽  
Mansoor Sarfraz ◽  
Phillips O. Agboola ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Three Dimensional ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Superior Cycling Stability

Three-dimensional graphene frameworks enable the development of stretchable asymmetric supercapacitors with a record high energy density of 77.8 W h kg−1, and also excellent stretchability and superior cycling stability.

Series asymmetric supercapacitors based on free-standing inner-connection electrodes for high energy density and high output voltage

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 15073-15079 ◽  
Author(s):  
Jiayou Tao ◽  
Nishuang Liu ◽  
Jiangyu Rao ◽  
Longwei Ding ◽  
Majid Raissan AL Bahrani ◽  
...  
Keyword(s):  
Energy Density ◽  
Output Voltage ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Free Standing ◽  
Asymmetric Supercapacitors ◽  
In Series ◽  
High Output Voltage ◽  
High Output

A series-wound asymmetric supercapacitor with an inner-connection structure has a high output voltage of 4.0 V and can power two LEDs connected in series.

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.

High energy density asymmetric supercapacitors based on MOF-derived nanoporous carbon/manganese dioxide hybrids

2017 ◽  
Vol 322 ◽  
pp. 582-589 ◽  
Author(s):  
Mengyao Yao ◽  
Xin Zhao ◽  
Lei Jin ◽  
Fangyuan Zhao ◽  
Junxian Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Manganese Dioxide ◽  
High Energy ◽  
Nanoporous Carbon ◽  
High Energy Density ◽  
Asymmetric Supercapacitors

Construction of mesoporous Cu-doped Co9S8 rectangular nanotube arrays for high energy density all-solid-state asymmetric supercapacitors

2019 ◽  
Vol 7 (10) ◽  
pp. 5333-5343 ◽  
Author(s):  
Wen Lu ◽  
Ze Yuan ◽  
Chunyang Xu ◽  
Jiqiang Ning ◽  
Yijun Zhong ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Power Density ◽  
High Energy ◽  
High Energy Density ◽  
Nanotube Arrays ◽  
Asymmetric Supercapacitors

A self-templating strategy was used to prepare novel mesoporous Cu-doped Co9S8 rectangular nanotube arrays (Cu-Co9S8 NTAs) as an advanced electrode for all-solid-state asymmetric supercapacitors, which deliver a high energy density of 71.93 W h kg−1 at a power density of 750 W kg−1.

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