One-pot hydrothermal synthesis of reduced graphene oxide/carbon nanotube/α-Ni(OH) 2 composites for high performance electrochemical supercapacitor

Chen, Xian; Chen, Xiaohua; Zhang, Fengqiao; Yang, Zhi; Huang, Shaoming

doi:10.1016/j.jpowsour.2013.04.076

Cited by 214 publications

(108 citation statements)

References 39 publications

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“…The electrochemical tests on the electrodes including cyclic voltammetry (CV) and galvanostatic charge-discharge measurements were performed in a 3 mol L -1 KOH aqueous solution. The calculation about the specific capacitance was based on the active material in electrodes as described in the literatures (Mondal et al 2013;Chen et al 2013). The composition of as-prepared Ni x Co 1-x LDH was determined by a chemical titration method according to the work of Liang et al (2010).…”

Section: Materials Characterizationmentioning

confidence: 99%

Facile synthesis of nickel–cobalt double hydroxide nanosheets with high rate capability for application in supercapacitor

et al. 2015

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In this work, nickel-cobalt double hydroxide nanosheets with high rate capability are prepared by a facile epoxide precipitation route. The synthetic procedure includes an oxidization step using ammonium persulfate as oxidant and a precipitation step using propylene oxide as precipitation agent. As shown in the results of electrochemical characterization, high specific capacitance of 2548 F g -1 for this material can be obtained at current density of 0.9 A g -1 in aqueous solution of 3 mol L -1 KOH. It is surprising to notice that the capacitance of material still remains 1587 F g -1 at high current density of 35.7 A g -1 . These results demonstrate that the asprepared nickel-cobalt double hydroxide nanosheets are promising electrode material for supercapacitor application as a primary power source.

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Section: Materials Characterizationmentioning

confidence: 99%

Facile synthesis of nickel–cobalt double hydroxide nanosheets with high rate capability for application in supercapacitor

et al. 2015

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“…To date, numerous transition-metal oxides/hydroxides electrode materials, such as NiO [10,11], Ni(OH) 2 [12][13][14][15], Co 3 O 4 [16], MnO 2 [17,18], have been carefully explored in the application-oriented study. In particular, Ni(OH) 2 is proved to be a promising electroactive material for the supercapacitors owing to its high theoretical specific capacitance, cost-effective, environmentally benign and high stability in alkaline electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Ni(OH)2/RGO nanosheets constituted 3D structure for high-performance supercapacitors

Chen

Shu

2015

J Sol-Gel Sci Technol

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Ni(OH) 2 /reduced graphene oxide (RGO) nanosheets constituted 3D structure have been successfully prepared via a facile two-step method. Through this method, Ni(OH) 2 can uniformly grow on both side of RGO nanosheets and the RGO nanosheets are partially overlapped, thereby forming a 3D structure. The Ni(OH) 2 /RGO composite delivers much higher specific capacitance and improved rate capability than the pure Ni(OH) 2 sample and the Ni(OH) 2 -RGO mixture. A specific capacitance up to 1143 F g -1 at 1 A g -1 is attained, 64 % of which can still be retained after 20 times increase in current density. In addition, excellent cycling stability can also be obtained, and 97 % of the capacitance can still be retained after 1500 charge and discharge cycles. Graphical Abstract Ni(OH) 2 /RGO nanosheets constituted 3D structure have been successfully prepared, which show superior specific capacitance with improved rate capability and long cycling stability.

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“…The electrochemical tests on the electrodes including cyclic voltammetry, galvanostatic charge-discharge, impedance and cycle stability measurements were taken in a 1 mol l -1 KOH aqueous solution. The calculations about the electrochemical performance were based on the description in the literature [23].…”

Section: Electrochemical Measurementmentioning

confidence: 99%

High electrochemical performance of nanostructured CoOOH grown on nickel foam by hydrothermal deposition for application in supercapacitor

Cui

Zhang

et al. 2016

J Sol-Gel Sci Technol

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In this work, nanostructured CoOOH grown on nickel foam as an electrode material for application in supercapacitor was prepared by a hydrothermal deposition strategy. The synthetic procedure includes formation of aCo(OH) 2 by epoxide precipitation, transformation of aCo(OH) 2 suspension to CoOOH colloidal solution and deposition of CoOOH particles on nickel foam by hydrothermal treatment. Due to the unique chemistry, the CoOOH particles deposited on nickel foam own extremely small size of about 3 nm. Induced by the small particle size and high conductivity of CoOOH, the as-prepared electrode material presents high electrochemical performance. It is demonstrated that the electrode material is capable of delivering high specific capacitance of 2165.1 F g -1 at scan rate of 5 mV s -1 with excellent cycle stability. It is surprising that this material presents high specific capacitance at very high current density (482.3 A g -1 at 63.9 A g -1 ).Graphical Abstract Nanostructured CoOOH was grown on nickel foam as an electrode material for application in supercapacitor through a hydrothermal deposition strategy. Due to the small particle-composed nanostructure and the high conductivity of CoOOH, the as-prepared electrode material presents high electrochemical performance.

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One-pot hydrothermal synthesis of reduced graphene oxide/carbon nanotube/α-Ni(OH) 2 composites for high performance electrochemical supercapacitor

Cited by 214 publications

References 39 publications

Facile synthesis of nickel–cobalt double hydroxide nanosheets with high rate capability for application in supercapacitor

Facile synthesis of nickel–cobalt double hydroxide nanosheets with high rate capability for application in supercapacitor

Ni(OH)2/RGO nanosheets constituted 3D structure for high-performance supercapacitors

High electrochemical performance of nanostructured CoOOH grown on nickel foam by hydrothermal deposition for application in supercapacitor

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