N-doped reduced graphene oxide decorated NiSe2 nanoparticles for high-performance asymmetric supercapacitors

Gu, Yun; Fan, Leqing; Huang, Jing‐Mei; Geng, Cheng-Long; Lin, Jianming; Huang, Miaoliang; Huang, Yunfang; Wu, Jihuai

doi:10.1016/j.jpowsour.2019.03.123

Cited by 217 publications

(52 citation statements)

References 51 publications

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“…The Nyquist plots contain a semi‐circle and a nearly straight line in the high‐ and low‐frequency ranges, respectively. The semi‐circle diameter on the abscissa of the Nyquist plot in the high‐frequency range of the electrochemical system represents the charge‐transfer resistance ( R ct ) [81] . The lower value of R ct indicates a higher transfer or diffusion rate for ions into the electrodes [82] .…”

Section: Resultsmentioning

confidence: 99%

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

Ashraf

Shah

Khan

et al. 2021

Chemistry A European J

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Tungsten oxide/graphene hybrid materials are attractive semiconductors for energy‐related applications. Herein, we report an asymmetric supercapacitor (ASC, HRG//m‐WO3 ASC), fabricated from monoclinic tungsten oxide (m‐WO3) nanoplates as a negative electrode and highly reduced graphene oxide (HRG) as a positive electrode material. The supercapacitor performance of the prepared electrodes was evaluated in an aqueous electrolyte (1 m H2SO4) using three‐ and two‐electrode systems. The HRG//m‐WO3 ASC exhibits a maximum specific capacitance of 389 F g−1 at a current density of 0.5 A g−1, with an associated high energy density of 93 Wh kg−1 at a power density of 500 W kg−1 in a wide 1.6 V operating potential window. In addition, the HRG//m‐WO3 ASC displays long‐term cycling stability, maintaining 92 % of the original specific capacitance after 5000 galvanostatic charge–discharge cycles. The m‐WO3 nanoplates were prepared hydrothermally while HRG was synthesized by a modified Hummers method.

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Section: Resultsmentioning

confidence: 99%

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

Ashraf

Shah

Khan

et al. 2021

Chemistry A European J

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“…As for the hot solvent method, Gu et al (2019) used a hydrothermal method to prepare Ni(OH) 2 precursor and then chose the hot solvent method to carry out splenization reaction to prepare a NiSe 2 nanoparticle decorated with nitrogen-doped reduced graphene oxide.…”

Section: Methodsmentioning

confidence: 99%

“… Gu et al (2019) combined the hydrothermal method and the hot-melt approach. First, the Ni(OH) 2 precursor was prepared by the hydrothermal method, and then a mixture of nitrogen-doped reduced graphene oxide and nickel selenide was prepared by the hot-melt method.…”

Section: Materials Modificationmentioning

confidence: 99%

Nanostructure Nickel-Based Selenides as Cathode Materials for Hybrid Battery-Supercapacitors

Sun

Wang

et al. 2021

Front. Chem.

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Supercapacitors (SCs) have attracted many attentions and already became part of some high-power derived devices such as Tesla’s electric cars because of their higher power density. Among all types of electrical energy storage devices, battery-supercapacitors are the most promising for superior performance characteristics, including short charging time, high power density, safety, easy fabrication procedures, and long operational life. An SC usually consists of two foremost components, namely electrode materials, and electrolyte. The selection of appropriate electrode materials with rational nanostructured designs have resulted in improved electrochemical properties for high performance and has reduced the cost of SCs. In this review, we mainly spotlight the nickel-based selenides nanostructured which applied as high-performance cathode materials for SCs. Different nickel-based selenides materials are highlighted in various categories, such as nickel-cobalt-based bimetallic chalcogenides and nickel-M based selenides. Also, we mentioned material modification for this material type. Finally, the designing strategy and future improvements on nickel-based selenides materials for the application of SCs are also discussed.

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“…[8][9][10][11][12][13] As a consequence, numerous hybrid composites (metalorganic framework/carbon nanotube, transition metal selenide/graphene and layered double hydroxide/MXene) have been developed to promote intrinsic natures of constitutive materials in the terms of structural arrangement, electrical conductivity and mechanical stability. [14][15][16][17][18][19][20][21][22] Remarkably, it has been demonstrated that the existence of two-dimensional structure in hybrid composites is capable to improve the effective contact between end members, facilitating the transport of electrons and ions during the electrochemical reaction. [23][24][25] For instance, Y.C.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous assembly of Ni–Co layered double hydroxide/sulfonated graphene nanosheet composites as battery-type materials for hybrid supercapacitors

et al. 2021

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N-doped reduced graphene oxide decorated NiSe2 nanoparticles for high-performance asymmetric supercapacitors

Cited by 217 publications

References 51 publications

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

Nanostructure Nickel-Based Selenides as Cathode Materials for Hybrid Battery-Supercapacitors

Heterogeneous assembly of Ni–Co layered double hydroxide/sulfonated graphene nanosheet composites as battery-type materials for hybrid supercapacitors

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