Edge-enriched porous graphene nanoribbons for high energy density supercapacitors

2014 ◽  
Vol 2 (20) ◽  
pp. 7484 ◽  
Author(s):  
C. Zheng ◽  
X. F. Zhou ◽  
H. L. Cao ◽  
G. H. Wang ◽  
Z. P. Liu
Keyword(s):  
Energy Density ◽  
Graphene Nanoribbons ◽  
High Energy ◽  
High Energy Density ◽  
Porous Graphene

Gas Altered Hierarchical Porous Graphene Aerogel with High Energy Density

2021 ◽  
Author(s):  
Xiaoning Tang ◽  
Shaokuan Zhu ◽  
Xiang Long ◽  
Yong Kou ◽  
Deyi Zheng ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Graphene Aerogel ◽  
Porous Graphene ◽  
Hierarchical Porous

High energy density lithium metal batteries enabled by a porous graphene/MgF2 framework

2020 ◽  
Vol 26 ◽  
pp. 73-82 ◽  
Author(s):  
Qingshuai Xu ◽  
Xianfeng Yang ◽  
Mumin Rao ◽  
Dingchang Lin ◽  
Kai Yan ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Metal ◽  
Porous Graphene ◽  
Lithium Metal Batteries

Advanced Asymmetric Supercapacitors Based on Ni(OH)2/Graphene and Porous Graphene Electrodes with High Energy Density

2012 ◽  
Vol 22 (12) ◽  
pp. 2632-2641 ◽  
Author(s):  
Jun Yan ◽  
Zhuangjun Fan ◽  
Wei Sun ◽  
Guoqing Ning ◽  
Tong Wei ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitors ◽  
Porous Graphene

Fe(CN)63− ion-modified MnO2/graphene nanoribbons enabling high energy density asymmetric supercapacitors

2018 ◽  
Vol 6 (17) ◽  
pp. 7649-7658 ◽  
Author(s):  
Lizhi Sheng ◽  
Lili Jiang ◽  
Tong Wei ◽  
Qihang Zhou ◽  
Yuting Jiang ◽  
...  
Keyword(s):  
Energy Density ◽  
Redox Reaction ◽  
Graphene Nanoribbons ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitors

Fe(CN)63− ion-modified MnO2/graphene ribbons can provide extra pseudocapacitance from the Fe(CN)63−/Fe(CN)64− redox reaction for high energy density supercapacitors.

A high energy density asymmetric all-solid-state supercapacitor based on cobalt carbonate hydroxide nanowire covered N-doped graphene and porous graphene electrodes

2015 ◽  
Vol 3 (36) ◽  
pp. 18505-18513 ◽  
Author(s):  
Hao Xie ◽  
Shaochun Tang ◽  
Jian Zhu ◽  
Sascha Vongehr ◽  
Xiangkang Meng
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Porous Graphene ◽  
Cobalt Carbonate ◽  
Carbonate Hydroxide ◽  
Negative Electrodes ◽  
Doped Graphene

To achieve high energy densities, an asymmetric all-solid-state supercapacitor is developed with cobalt carbonate hydroxide (CCH) nanowire covered N-doped graphene (NG) as positive and porous NG as negative electrodes.

A HIGH ENERGY DENSITY ZINC/OXYGEN BATTERY SYSTEM

1966 ◽  
Author(s):  
S. CHODOSH ◽  
E. KATSOULIS ◽  
M. ROSANSKY
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Battery System

Efficient Co-Harvesting of Solar Energy and Low-Grade Heat by Molecular Photoswitches for High Energy Density, Long-Term Stable Solar Thermal Battery

2019 ◽  
Author(s):  
Zhao-Yang Zhang ◽  
Tao LI
Keyword(s):  
Energy Density ◽  
Solar Energy ◽  
High Performance ◽  
High Energy ◽  
Solar Thermal ◽  
High Energy Density ◽  
Low Grade ◽  
Thermal Battery ◽  
Low Grade Heat

Solar energy and ambient heat are two inexhaustible energy sources for addressing the global challenge of energy and sustainability. Solar thermal battery based on molecular switches that can store solar energy and release it as heat has recently attracted great interest, but its development is severely limited by both low energy density and short storage stability. On the other hand, the efficient recovery and upgrading of low-grade heat, especially that of the ambient heat, has been a great challenge. Here we report that solar energy and ambient heat can be simultaneously harvested and stored, which is enabled by room-temperature photochemical crystal-to-liquid transitions of small-molecule photoswitches. The two forms of energy are released together to produce high-temperature heat during the reverse photochemical phase change. This strategy, combined with molecular design, provides high energy density of 320-370 J/g and long-term storage stability (half-life of about 3 months). On this basis, we fabricate high-performance, flexible film devices of solar thermal battery, which can be readily recharged at room temperature with good cycling ability, show fast rate of heat release, and produce high-temperature heat that is >20<sup> o</sup>C higher than the ambient temperature. Our work opens up a new avenue to harvest ambient heat, and demonstrate a feasible strategy to develop high-performance solar thermal battery.

Efficient Co-Harvesting of Solar Energy and Low-Grade Heat by Molecular Photoswitches for High Energy Density, Long-Term Stable Solar Thermal Battery

2019 ◽  
Author(s):  
Zhao-Yang Zhang ◽  
Tao LI
Keyword(s):  
Energy Density ◽  
Solar Energy ◽  
High Performance ◽  
High Energy ◽  
Solar Thermal ◽  
High Energy Density ◽  
Low Grade ◽  
Thermal Battery ◽  
Low Grade Heat

Solar energy and ambient heat are two inexhaustible energy sources for addressing the global challenge of energy and sustainability. Solar thermal battery based on molecular switches that can store solar energy and release it as heat has recently attracted great interest, but its development is severely limited by both low energy density and short storage stability. On the other hand, the efficient recovery and upgrading of low-grade heat, especially that of the ambient heat, has been a great challenge. Here we report that solar energy and ambient heat can be simultaneously harvested and stored, which is enabled by room-temperature photochemical crystal-to-liquid transitions of small-molecule photoswitches. The two forms of energy are released together to produce high-temperature heat during the reverse photochemical phase change. This strategy, combined with molecular design, provides high energy density of 320-370 J/g and long-term storage stability (half-life of about 3 months). On this basis, we fabricate high-performance, flexible film devices of solar thermal battery, which can be readily recharged at room temperature with good cycling ability, show fast rate of heat release, and produce high-temperature heat that is >20<sup> o</sup>C higher than the ambient temperature. Our work opens up a new avenue to harvest ambient heat, and demonstrate a feasible strategy to develop high-performance solar thermal battery.

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