Nanospace-confined synthesis of oriented porous carbon nanosheets for high-performance electrical double layer capacitors

2016 ◽  
Vol 4 (43) ◽  
pp. 16879-16885 ◽  
Author(s):  
Ya Wang ◽  
Hui Dou ◽  
Bing Ding ◽  
Jie Wang ◽  
Zhi Chang ◽  
...  
Keyword(s):  
Energy Density ◽  
Porous Carbon ◽  
Electrical Double Layer ◽  
High Performance ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Nanosheets ◽  
Electrical Double Layer Capacitors ◽  
Double Layer Capacitors

A symmetric capacitor based on facilely synthesized three-dimensional oriented porous carbon nanosheets delivers high energy density.

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.

Hierarchical three-dimensional mesoporous MnO2 nanostructures for high performance aqueous asymmetric supercapacitors

2016 ◽  
Vol 4 (2) ◽  
pp. 587-595 ◽  
Author(s):  
Sourav Bag ◽  
C. Retna Raj
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors

Nanocrystalline mesoporous α-MnO2 is synthesized for the fabrication of a high energy density aqueous asymmetric supercapacitor device.

A two-step etching route to ultrathin carbon nanosheets for high performance electrical double layer capacitors

Nanoscale ◽  
2016 ◽  
Vol 8 (21) ◽  
pp. 11136-11142 ◽  
Author(s):  
Bing Ding ◽  
Jie Wang ◽  
Ya Wang ◽  
Zhi Chang ◽  
Gang Pang ◽  
...  
Keyword(s):  
Double Layer ◽  
Electrical Double Layer ◽  
High Performance ◽  
Carbon Nanosheets ◽  
Electrical Double Layer Capacitors ◽  
Double Layer Capacitors

scholarly journals Dielectric capacitors with three-dimensional nanoscale interdigital electrodes for energy storage

2015 ◽  
Vol 1 (9) ◽  
pp. e1500605 ◽  
Author(s):  
Fangming Han ◽  
Guowen Meng ◽  
Fei Zhou ◽  
Li Song ◽  
Xinhua Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Breakdown Voltage ◽  
High Performance ◽  
Traditional Approach ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Density ◽  
Interdigital Electrodes ◽  
Large Capacitance

Dielectric capacitors are promising candidates for high-performance energy storage systems due to their high power density and increasing energy density. However, the traditional approach strategies to enhance the performance of dielectric capacitors cannot simultaneously achieve large capacitance and high breakdown voltage. We demonstrate that such limitations can be overcome by using a completely new three-dimensional (3D) nanoarchitectural electrode design. First, we fabricate a unique nanoporous anodic aluminum oxide (AAO) membrane with two sets of interdigitated and isolated straight nanopores opening toward opposite planar surfaces. By depositing carbon nanotubes in both sets of pores inside the AAO membrane, the new dielectric capacitor with 3D nanoscale interdigital electrodes is simply realized. In our new capacitors, the large specific surface area of AAO can provide large capacitance, whereas uniform pore walls and hemispheric barrier layers can enhance breakdown voltage. As a result, a high energy density of 2 Wh/kg, which is close to the value of a supercapacitor, can be achieved, showing promising potential in high-density electrical energy storage for various applications.

Self-assembled three-dimensional hierarchical porous V2O5/graphene hybrid aerogels for supercapacitors with high energy density and long cycle life

2015 ◽  
Vol 3 (5) ◽  
pp. 1828-1832 ◽  
Author(s):  
Yingjie Wu ◽  
Guohua Gao ◽  
Guangming Wu
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Three Dimensional ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Long Cycle Life ◽  
Hierarchical Porous ◽  
Self Assembled ◽  
Hybrid Aerogels

A self-assembled three-dimensional hierarchical porous V2O5/graphene hybrid aerogel for high-performance supercapacitor was synthesized.

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