scholarly journals Pulse Potentiostatic Deposition of Polyaniline Nanobumps on 3D Graphene Hydrogel for High-Performance Supercapacitor Electrode

2019 ◽  
pp. 3968-3977
Author(s):  
Yadong Wang ◽  
Keyword(s):  
High Performance ◽  
Supercapacitor Electrode ◽  
3D Graphene ◽  
Potentiostatic Deposition

High-performance supercapacitor electrode based on a polyaniline nanofibers/3D graphene framework as an efficient charge transporter

2014 ◽  
Vol 2 (14) ◽  
pp. 4989-4998 ◽  
Author(s):  
Sachin B. Kulkarni ◽  
Umakant M. Patil ◽  
Iman Shackery ◽  
Ji Soo Sohn ◽  
Suchan Lee ◽  
...  
Keyword(s):  
Charge Transport ◽  
High Performance ◽  
Supercapacitor Electrode ◽  
Supercapacitive Performance ◽  
Fast Charge ◽  
3D Graphene ◽  
Polyaniline Nanofibers ◽  
Graphene Electrode ◽  
Efficient Charge

The distinctive architecture of the PANI/3D graphene electrode enhances its supercapacitive performance (1024 F g¬1), the lightweight and porous conducting foam provides “freeways” for fast charge transport.

scholarly journals Cauliflower-Like Co3O4/Three-Dimensional Graphene Composite for High Performance Supercapacitor Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Huili Liu ◽  
Xinglong Gou ◽  
Yi Wang ◽  
Xuan Du ◽  
Can Quan ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Constant Current ◽  
Supercapacitor Electrode ◽  
3D Graphene ◽  
Graphene Composite ◽  
Transmission Electron ◽  
Constant Current Charge ◽  
Supercapacitor Electrode Materials

Cauliflower-like Co3O4/three-dimensional (3D) graphene nanocomposite material was synthesized by a facile two-step synthesis route (heat reduction of graphite oxide (GO) and hydrothermal synthesis of Co3O4). The phase composition, morphology, and structure of the as-obtained products were characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD). Electrochemical properties as supercapacitor electrode materials were systematically investigated by cyclic voltammetry (CV) and constant current charge-discharge tests. It was found that the Co3O4/3D graphene composite showed a maximum specific capacitance of 863 F g−1, which was obtained by means of CVs at a scan rate of 1 mV s−1in 6 M KOH aqueous solution. Moreover, the composite exhibited improved cycling stability after 1,000 cycles. The good supercapacitor performance is ascribed to the combination of 3D graphene and cauliflower-like Co3O4, which leads to a strong synergistic effect to remarkably boost the utilization ratio of Co3O4and graphene for high capacitance.

Self-Assembled 3D Graphene-Based Aerogel with Co3O4Nanoparticles as High-Performance Asymmetric Supercapacitor Electrode

ChemSusChem ◽  
2015 ◽  
Vol 8 (17) ◽  
pp. 2917-2926 ◽  
Author(s):  
Lijing Xie ◽  
Fangyuan Su ◽  
Longfei Xie ◽  
Xiaoming Li ◽  
Zhuo Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Asymmetric Supercapacitor ◽  
Supercapacitor Electrode ◽  
3D Graphene ◽  
Self Assembled

Self-assembled 3D graphene-based aerogel with Au nanoparticles as high-performance supercapacitor electrode

2021 ◽  
Vol 43 ◽  
pp. 103157
Author(s):  
Bibhuti Bhusan Sahoo ◽  
Niraj Kumar ◽  
Himanshu Sekhar Panda ◽  
Bharati Panigrahy ◽  
Naresh Kumar Sahoo ◽  
...  
Keyword(s):  
High Performance ◽  
Au Nanoparticles ◽  
Supercapacitor Electrode ◽  
3D Graphene ◽  
Self Assembled

scholarly journals Tuning the hierarchical pore structure of graphene oxide through dual thermal activation for high-performance supercapacitor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jeongpil Kim ◽  
Jeong-Hyun Eum ◽  
Junhyeok Kang ◽  
Ohchan Kwon ◽  
Hansung Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Pore Structure ◽  
Specific Capacitance ◽  
Surface Area ◽  
Thermal Annealing ◽  
High Performance ◽  
Annealing Process ◽  
Supercapacitor Electrode ◽  
Simple Method ◽  
Surface Areas

AbstractHerein, we introduce a simple method to prepare hierarchical graphene with a tunable pore structure by activating graphene oxide (GO) with a two-step thermal annealing process. First, GO was treated at 600 °C by rapid thermal annealing in air, followed by subsequent thermal annealing in N2. The prepared graphene powder comprised abundant slit nanopores and micropores, showing a large specific surface area of 653.2 m2/g with a microporous surface area of 367.2 m2/g under optimized conditions. The pore structure was easily tunable by controlling the oxidation degree of GO and by the second annealing process. When the graphene powder was used as the supercapacitor electrode, a specific capacitance of 372.1 F/g was achieved at 0.5 A/g in 1 M H2SO4 electrolyte, which is a significantly enhanced value compared to that obtained using activated carbon and commercial reduced GO. The performance of the supercapacitor was highly stable, showing 103.8% retention of specific capacitance after 10,000 cycles at 10 A/g. The influence of pore structure on the supercapacitor performance was systematically investigated by varying the ratio of micro- and external surface areas of graphene.

MOF/PEDOT/HPMo-based polycomponent hierarchical hollow micro-vesicles for high performance flexible supercapacitors

2021 ◽  
Vol 9 (5) ◽  
pp. 2948-2958
Author(s):  
Bing Wang ◽  
Shuo Liu ◽  
Lin Liu ◽  
Wen-Wei Song ◽  
Yue Zhang ◽  
...  
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Cycle Stability ◽  
Supercapacitor Electrode ◽  
Flexible Supercapacitors ◽  
High Area

The three-component PCN-224/PEDOT/PMo12 supercapacitor electrode material is designed to offer high area capacitance, good cycle stability and mechanical flexibility.

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