Rylene Diimide-Based Alternate and Random Copolymers for Flexible Supercapacitor Electrode Materials with Exceptional Stability and High Power Density

2019 ◽  
Vol 123 (4) ◽  
pp. 2084-2093 ◽  
Author(s):  
Sandeep Sharma ◽  
Roby Soni ◽  
Sreekumar Kurungot ◽  
S. K. Asha
Keyword(s):  
Power Density ◽  
High Power ◽  
Electrode Materials ◽  
Random Copolymers ◽  
High Power Density ◽  
Supercapacitor Electrode ◽  
Flexible Supercapacitor ◽  
Supercapacitor Electrode Materials ◽  
Exceptional Stability

α MnMoO4/graphene hybrid composite: high energy density supercapacitor electrode material

2014 ◽  
Vol 43 (28) ◽  
pp. 11067-11076 ◽  
Author(s):  
Debasis Ghosh ◽  
Soumen Giri ◽  
Md. Moniruzzaman ◽  
Tanya Basu ◽  
Manas Mandal ◽  
...  
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Power ◽  
Electrode Material ◽  
Hybrid Composite ◽  
High Energy ◽  
High Energy Density ◽  
High Power Density ◽  
Supercapacitor Electrode

A hydrothermal procedure was employed to synthesize hexahedron shaped MnMoO4 wrapped with graphene exhibiting high energy density and high power density.

Scalable Electrode Materials with Nanoporous Current Collector Shells for Supercapacitors with Ultrahigh Areal and Volumetric Capacitances

2021 ◽  
Author(s):  
Ruitao Zhou ◽  
Ying Li ◽  
Kwok Ho Lam
Keyword(s):  
Specific Capacitance ◽  
Power Density ◽  
High Power ◽  
Electrode Materials ◽  
Current Collector ◽  
High Power Density ◽  
Mass Loading ◽  
Active Materials ◽  
Limited Mass

Supercapacitor is characterized by its high power density, but the bottleneck is the limited mass loading and low specific capacitance of active materials in a single electrode. Although there have...

Chain rigidity modification to promote the electrochemical performance of polymeric battery electrode materials

2019 ◽  
Vol 7 (17) ◽  
pp. 10581-10588 ◽  
Author(s):  
Zhihui Niu ◽  
Huaxi Wu ◽  
Lei Liu ◽  
Gaole Dai ◽  
Shiyun Xiong ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Power Density ◽  
High Power ◽  
Electrode Materials ◽  
High Power Density ◽  
Battery Materials ◽  
Chain Rigidity ◽  
Battery Electrode ◽  
Rigidity Modification

Tuning the chain rigidity enables high power density without sacrificing the volumetric energy density for polymeric battery materials.

scholarly journals Biomass-Derived Graphene-Based Materials Embedded with Onion-Like Carbons for High Power Supercapacitors

2021 ◽  
Author(s):  
SungHoon Jung ◽  
Pham Thi Huong ◽  
Shalini Sahani ◽  
Kumud Malika Tripathi ◽  
Byung Jun Park ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Density ◽  
Current Density ◽  
High Power ◽  
Electrode Materials ◽  
High Current Density ◽  
3D Structure ◽  
High Energy ◽  
High Energy Density ◽  
High Power Density

Abstract We report a facile method to produce composites of hierarchically porous graphene-based materials embedded with onion-like carbons (Gr-OLCs) for high power density supercapacitors. Gr-OLCs were produced from the mixture of glucose, thiourea, and ammonium chloride, through the condensation reaction and subsequent blow into three-dimensional (3D) structure, and carbonization process. Owing to its high surface area, hierarchical pore distribution, and interconnected carbon networks embedded with onion-like carbons, this carbon exhibited the specific capacitance of 140 F g-1 at a high current density of 64 A g-1. Highly porous and interconnected carbon structure tend to facilitate the movement of electrolyte ions within the electrode and provide an efficient pathway for the movement of charge carriers, resulting in an exceptionally high power density of 1,737 kW kg-1, while maintaining its high energy density of 30 Wh kg-1 at current density of 256 A g-1. Studies on the complex capacitance of the cell revealed that these carbon electrodes possess stable energy storage features with minimal capacitive loss, achieving both high power and energy densities. This work may provide a new type of carbon-based electrode materials which can meet the requirements for high power energy storage devices.

Rational Synthesis of Nanostructured Electrode Materials for High-Performance Supercapacitors

2017 ◽  
Author(s):  
Ching-Ping Wong
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Electrode Materials ◽  
High Power Density ◽  
Supercapacitor Electrode ◽  
Practical Applications ◽  
Moderate Energy ◽  
Nyquist Plots ◽  
Supercapacitor Electrode Materials

Supercapacitors fill the gap between the batteries and capacitors in the Nyquist plots, and being considered as the candidates for next generation energy storage due to the high-power density, long-term cyclability and moderate energy density. In order to fulfill the requirement for practical applications, it is necessary to further develop the current supercapacitors and enhance the energy density. Hence in this paper, we discuss the work we have done for developing high-performance supercapacitors, including synthesis of large surface area and high conductive carbonaceous materials and highly electroactive pseudocapacitive materials. Our works may pave the way for synthesis of high-performance supercapacitor electrode materials.

scholarly journals Ultrafine MnO2 nanowires grown on RGO-coated carbon cloth as a binder-free and flexible supercapacitor electrode with high performance

RSC Advances ◽  
2018 ◽  
Vol 8 (67) ◽  
pp. 38631-38640 ◽  
Author(s):  
Zhihui Xu ◽  
Shishuai Sun ◽  
Wen Cui ◽  
Dan Yu ◽  
Jiachun Deng Jiachun Deng
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Carbon Cloth ◽  
Supercapacitor Electrode ◽  
Flexible Supercapacitor ◽  
Reduced Graphene ◽  
Binder Free ◽  
Supercapacitor Electrode Materials ◽  
Coated Carbon ◽  
Mno2 Nanowires

Reduced graphene oxide coated carbon cloth has been used as a substrate for the growth of ultrafine MnO2 nanowires (CC/RGO/MnO2), forming binder-free and flexible supercapacitor electrode materials.

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