Metallic nickel-cobalt phosphide/multilayer graphene composite for high-performance supercapacitors

Minmin Shuai; Jianhui Lin; Wenzhi Wu; Huifang Kuang; Wengong Zhang; Qidan Ling; Hong Chen; Sridhar Komarneni

doi:10.1039/d0nj00781a

Metallic nickel-cobalt phosphide/multilayer graphene composite for high-performance supercapacitors

Minmin Shuai, Jianhui Lin, Wenzhi Wu, Huifang Kuang, Wengong Zhang, Qidan Ling, Hong Chen, Sridhar Komarneni

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19 Scopus citations

Abstract

A facile and low-cost method for preparing a nickel-cobalt phosphide/multilayer graphene (MLG) (NiCoP/MLG) composite was developed in this study using a new strategy. NiCoP/MLG was prepared through calcination of NiCo-benzoate layered double hydroxide (NiCo-B-LDH) to obtain NiCoO₂/MLG first followed by phosphorization to obtain the composite of NiCoP/MLG. Here, NiCo-B-LDH served as a self-sacrificing template. The obtained porous flower-like NiCoP/MLG was tested as a material for supercapacitor electrodes, which exhibited excellent electrochemical performance in terms of specific capacitance (1419.6 F g⁻¹at 1 A g⁻¹), durability at high current density and long-term operation with 91.7% capacitance retention after more than 3000 cycles at a current density of 5 A g⁻¹. Moreover, the symmetrical supercapacitor based on NiCoP/MLG delivered a high energy density of 32.19 W h kg⁻¹at a power density of 741.65 W kg⁻¹. Therefore, the as-prepared NiCoP/MLG could serve as a high-performance supercapacitor electrode material.

Original language	English (US)
Pages (from-to)	8796-8804
Number of pages	9
Journal	New Journal of Chemistry
Volume	44
Issue number	21
DOIs	https://doi.org/10.1039/d0nj00781a
State	Published - Jun 7 2020

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)
Materials Chemistry

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title = "Metallic nickel-cobalt phosphide/multilayer graphene composite for high-performance supercapacitors",

abstract = "A facile and low-cost method for preparing a nickel-cobalt phosphide/multilayer graphene (MLG) (NiCoP/MLG) composite was developed in this study using a new strategy. NiCoP/MLG was prepared through calcination of NiCo-benzoate layered double hydroxide (NiCo-B-LDH) to obtain NiCoO2/MLG first followed by phosphorization to obtain the composite of NiCoP/MLG. Here, NiCo-B-LDH served as a self-sacrificing template. The obtained porous flower-like NiCoP/MLG was tested as a material for supercapacitor electrodes, which exhibited excellent electrochemical performance in terms of specific capacitance (1419.6 F g−1at 1 A g−1), durability at high current density and long-term operation with 91.7% capacitance retention after more than 3000 cycles at a current density of 5 A g−1. Moreover, the symmetrical supercapacitor based on NiCoP/MLG delivered a high energy density of 32.19 W h kg−1at a power density of 741.65 W kg−1. Therefore, the as-prepared NiCoP/MLG could serve as a high-performance supercapacitor electrode material.",

author = "Minmin Shuai and Jianhui Lin and Wenzhi Wu and Huifang Kuang and Wengong Zhang and Qidan Ling and Hong Chen and Sridhar Komarneni",

note = "Funding Information: The authors would like to acknowledge the financial support from the National Natural Science Foundation of China (21574021) and the State Scholarship Fund from China Scholarship Council (201908350019). Publisher Copyright: {\textcopyright} The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2020.",

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T1 - Metallic nickel-cobalt phosphide/multilayer graphene composite for high-performance supercapacitors

AU - Shuai, Minmin

AU - Lin, Jianhui

AU - Wu, Wenzhi

AU - Kuang, Huifang

AU - Zhang, Wengong

AU - Ling, Qidan

AU - Chen, Hong

AU - Komarneni, Sridhar

N1 - Funding Information: The authors would like to acknowledge the financial support from the National Natural Science Foundation of China (21574021) and the State Scholarship Fund from China Scholarship Council (201908350019). Publisher Copyright: © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2020.

PY - 2020/6/7

Y1 - 2020/6/7

N2 - A facile and low-cost method for preparing a nickel-cobalt phosphide/multilayer graphene (MLG) (NiCoP/MLG) composite was developed in this study using a new strategy. NiCoP/MLG was prepared through calcination of NiCo-benzoate layered double hydroxide (NiCo-B-LDH) to obtain NiCoO2/MLG first followed by phosphorization to obtain the composite of NiCoP/MLG. Here, NiCo-B-LDH served as a self-sacrificing template. The obtained porous flower-like NiCoP/MLG was tested as a material for supercapacitor electrodes, which exhibited excellent electrochemical performance in terms of specific capacitance (1419.6 F g−1at 1 A g−1), durability at high current density and long-term operation with 91.7% capacitance retention after more than 3000 cycles at a current density of 5 A g−1. Moreover, the symmetrical supercapacitor based on NiCoP/MLG delivered a high energy density of 32.19 W h kg−1at a power density of 741.65 W kg−1. Therefore, the as-prepared NiCoP/MLG could serve as a high-performance supercapacitor electrode material.

AB - A facile and low-cost method for preparing a nickel-cobalt phosphide/multilayer graphene (MLG) (NiCoP/MLG) composite was developed in this study using a new strategy. NiCoP/MLG was prepared through calcination of NiCo-benzoate layered double hydroxide (NiCo-B-LDH) to obtain NiCoO2/MLG first followed by phosphorization to obtain the composite of NiCoP/MLG. Here, NiCo-B-LDH served as a self-sacrificing template. The obtained porous flower-like NiCoP/MLG was tested as a material for supercapacitor electrodes, which exhibited excellent electrochemical performance in terms of specific capacitance (1419.6 F g−1at 1 A g−1), durability at high current density and long-term operation with 91.7% capacitance retention after more than 3000 cycles at a current density of 5 A g−1. Moreover, the symmetrical supercapacitor based on NiCoP/MLG delivered a high energy density of 32.19 W h kg−1at a power density of 741.65 W kg−1. Therefore, the as-prepared NiCoP/MLG could serve as a high-performance supercapacitor electrode material.

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Metallic nickel-cobalt phosphide/multilayer graphene composite for high-performance supercapacitors

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