Facile synthesis of a hierarchical CuS/CuSCN nanocomposite with advanced energy storage properties

2018 ◽  
Vol 42 (18) ◽  
pp. 15387-15396 ◽  
Author(s):  
Yasun Y. Kannangara ◽  
Pichaimani Prabunathan ◽  
Jang-Kun Song
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Facile Synthesis ◽  
Energy Storage Properties ◽  
Facile Fabrication ◽  
Storage Properties

Facile fabrication of a CuS/CuSCN nanocomposite electrode for a supercapacitor with a high specific capacitance (1787.3 F g−1).

scholarly journals Mesoporous Nickel-Based Zeolite Capsule Complex with Fe3O4 as Electrode for Advanced Supercapacitor

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Lili Song ◽  
Yinghui Han ◽  
Feng Guo ◽  
Yunpeng Jiao ◽  
Yujuan Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Current Density ◽  
High Specific Capacitance ◽  
Positive Electrodes ◽  
Storage Mechanism ◽  
Electrochemical Testing ◽  
Transmission Electron ◽  
Adsorption Analysis ◽  
Energy Storage Properties

A new kind of zeolite capsule complex with ferriferous oxide (Fe3O4) materials was prepared in this work. Its morphology was characterized via the scanning electron microscope (SEM), the high-resolution transmission electron microscopy (HRTEM), N2 adsorption analysis, and X-ray powder diffraction, respectively. The mesoporous nickel-based complex electrodes using substrate coating exhibited excellent energy storage properties through electrochemical testing. The high specific capacitance of 739.8 F g−1 was achieved at the current density of 1 A g−1 in a 6 M KOH solution. The good capacitance retention can retain 72.8% after 1000 cycles in a current density of 1 A g−1. The energy storage mechanism of the nickel-based complex electrodes was also analyzed. Furthermore, the asymmetrical supercapacitors (ASCs) were fabricated using the zeolite capsule complex with Fe3O4 as positive electrodes and the AC as negative electrodes, which performs high specific capacitance, outstanding energy density, superb power density, excellent cycle life, and small internal impedance. Those results suggest that the mesoporous nickel-based zeolite capsule complex with Fe3O4 as an electrode would be an ideal candidate material for supercapacitor applications.

scholarly journals Simultaneous Electrochemical Exfoliation and Chemical Functionalization of Graphene for Supercapacitor Electrodes

2020 ◽  
Author(s):  
Yuling Zhuo ◽  
Ian Kinloch ◽  
Mark Alexander Bissett
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Diazonium Salts ◽  
Pristine Graphene ◽  
Functionalized Graphene ◽  
Electrochemical Exfoliation ◽  
One Pot ◽  
Energy Storage Properties ◽  
Energy Challenge ◽  
Storage Properties

The demand for efficient electrochemical energy storage technology, such as supercapacitors, continues to increase as both the energy and power demands of devices grow. Graphene has attracted wide interest in addressing this energy challenge due to its high conductivity and specific surface area. However, in reality the hydrophobic properties and the restacking of the graphene sheets during device manufacture leads to significantly lower storage performance than that theoretically predicted for isolated sheets. Herein, functionalized graphene was prepared by a convenient one-pot process, where graphene was functionalized with aryl diazonium salts (4-nitrobenzenediazonium tetrafluoroborate (NBD) and 4-bromobenzenediazonium tetrafluoroborate (BBD)) simultaneously during oxidative electrochemical exfoliation of graphite. It was found that the specific capacitance for functionalized graphene was significantly improved compared to pristine graphene due to the introduction of pseudocapacitance by the aryl diazonium salts. The dispersibility of functionalized graphene in water was also found to be improved, implying a better hydrophilicity. NBD functionalized graphene which had been exfoliated/functionalized for a total of 30 minutes exhibited the best energy storage properties with a 5 times increase in specific capacitance (17 mF cm-2) compared to pristine graphene (3 mF cm-2).

scholarly journals One-step facile synthesis of nickel–chromium layered double hydroxide nanoflakes for high-performance supercapacitors

2020 ◽  
Vol 2 (5) ◽  
pp. 2099-2105 ◽  
Author(s):  
Zuo Chen ◽  
Hao Deng ◽  
Man Zhang ◽  
Zhiyu Yang ◽  
Di Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Rational Design ◽  
Facile Synthesis ◽  
Design And Synthesis ◽  
Nickel Chromium ◽  
Energy Storage Properties ◽  
One Step ◽  
Double Hydroxide ◽  
Storage Properties

Rational design and synthesis of efficient electrodes with pronounced energy storage properties are crucial for supercapacitors.

Facile Fabrication of Flower-Like C@α -Mo2 C Hybrids with Enhanced Energy Storage Properties

2018 ◽  
Vol 3 (28) ◽  
pp. 8395-8401
Author(s):  
Fang Hu ◽  
Zhiming Liu ◽  
Chuang Yue ◽  
Juan Xiang ◽  
Taeseup Song
Keyword(s):  
Energy Storage ◽  
Energy Storage Properties ◽  
Facile Fabrication ◽  
Storage Properties
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