NiCoP/Co9S8 nanoflowers as advanced electrode material for asymmetric supercapacitors

Qianqian Fu; Hui Wang; Mengqi Cui; Xuyun Wang; Jianwei Ren; Rongfang Wang

doi:10.1016/j.jallcom.2023.170798

NiCoP/Co₉S₈ nanoflowers as advanced electrode material for asymmetric supercapacitors

Qianqian Fu, Hui Wang, Mengqi Cui, Xuyun Wang, Jianwei Ren, Rongfang Wang

Mechanical Engineering Science

Qingdao University of Science and Technology

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

This work presents the synthesis of NiCoP using the Kirkendall effect and the preparation of a three-dimensional (3D) nanoflower-like structure of NiCoP/Co₉S₈ through sulfur-induced dissociation. The optimized electrode sample exhibited a capacity of 1252 μAh cm⁻² (31.3 mAh g⁻¹) at 1 mA cm⁻² and 898 μAh cm⁻² (22.5 mAh g⁻¹) at 30 mA cm⁻². The assembled NiCoP/Co₉S₈ electrode/active carbon (AC)-based asymmetric supercapacitor (ASC) demonstrated a capacity retention rate of 87 % after 5000 cycles at 20 mA cm⁻² current density. Furthermore, the optimized NiCoP/Co₉S₈ composite showed a power density of 480.1 W kg⁻¹ at an energy density of 115.1 Wh kg⁻¹ and a power density of 4800.1 Wh kg⁻¹ at an energy density of 66.4 W kg⁻¹. These findings highlight the potential of the 3D NiCoP/Co₉S₈ nanoflower-like structure for application in asymmetric supercapacitors.

Original language	English
Article number	170798
Journal	Journal of Alloys and Compounds
Volume	960
DOIs	https://doi.org/10.1016/j.jallcom.2023.170798
Publication status	Published - 15 Oct 2023

Keywords

Electrode
Kirkendall effect
NiCoP/CoS nanoflowers
Supercapacitors

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2023.170798

Cite this

@article{b755d0f7a5b34c3e90fccecbc5cd659f,

title = "NiCoP/Co9S8 nanoflowers as advanced electrode material for asymmetric supercapacitors",

abstract = "This work presents the synthesis of NiCoP using the Kirkendall effect and the preparation of a three-dimensional (3D) nanoflower-like structure of NiCoP/Co9S8 through sulfur-induced dissociation. The optimized electrode sample exhibited a capacity of 1252 μAh cm−2 (31.3 mAh g−1) at 1 mA cm−2 and 898 μAh cm−2 (22.5 mAh g−1) at 30 mA cm−2. The assembled NiCoP/Co9S8 electrode/active carbon (AC)-based asymmetric supercapacitor (ASC) demonstrated a capacity retention rate of 87 % after 5000 cycles at 20 mA cm−2 current density. Furthermore, the optimized NiCoP/Co9S8 composite showed a power density of 480.1 W kg−1 at an energy density of 115.1 Wh kg−1 and a power density of 4800.1 Wh kg−1 at an energy density of 66.4 W kg−1. These findings highlight the potential of the 3D NiCoP/Co9S8 nanoflower-like structure for application in asymmetric supercapacitors.",

keywords = "Electrode, Kirkendall effect, NiCoP/CoS nanoflowers, Supercapacitors",

author = "Qianqian Fu and Hui Wang and Mengqi Cui and Xuyun Wang and Jianwei Ren and Rongfang Wang",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = oct,

day = "15",

doi = "10.1016/j.jallcom.2023.170798",

language = "English",

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T1 - NiCoP/Co9S8 nanoflowers as advanced electrode material for asymmetric supercapacitors

AU - Fu, Qianqian

AU - Wang, Hui

AU - Cui, Mengqi

AU - Wang, Xuyun

AU - Ren, Jianwei

AU - Wang, Rongfang

PY - 2023/10/15

Y1 - 2023/10/15

N2 - This work presents the synthesis of NiCoP using the Kirkendall effect and the preparation of a three-dimensional (3D) nanoflower-like structure of NiCoP/Co9S8 through sulfur-induced dissociation. The optimized electrode sample exhibited a capacity of 1252 μAh cm−2 (31.3 mAh g−1) at 1 mA cm−2 and 898 μAh cm−2 (22.5 mAh g−1) at 30 mA cm−2. The assembled NiCoP/Co9S8 electrode/active carbon (AC)-based asymmetric supercapacitor (ASC) demonstrated a capacity retention rate of 87 % after 5000 cycles at 20 mA cm−2 current density. Furthermore, the optimized NiCoP/Co9S8 composite showed a power density of 480.1 W kg−1 at an energy density of 115.1 Wh kg−1 and a power density of 4800.1 Wh kg−1 at an energy density of 66.4 W kg−1. These findings highlight the potential of the 3D NiCoP/Co9S8 nanoflower-like structure for application in asymmetric supercapacitors.

AB - This work presents the synthesis of NiCoP using the Kirkendall effect and the preparation of a three-dimensional (3D) nanoflower-like structure of NiCoP/Co9S8 through sulfur-induced dissociation. The optimized electrode sample exhibited a capacity of 1252 μAh cm−2 (31.3 mAh g−1) at 1 mA cm−2 and 898 μAh cm−2 (22.5 mAh g−1) at 30 mA cm−2. The assembled NiCoP/Co9S8 electrode/active carbon (AC)-based asymmetric supercapacitor (ASC) demonstrated a capacity retention rate of 87 % after 5000 cycles at 20 mA cm−2 current density. Furthermore, the optimized NiCoP/Co9S8 composite showed a power density of 480.1 W kg−1 at an energy density of 115.1 Wh kg−1 and a power density of 4800.1 Wh kg−1 at an energy density of 66.4 W kg−1. These findings highlight the potential of the 3D NiCoP/Co9S8 nanoflower-like structure for application in asymmetric supercapacitors.

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KW - Kirkendall effect

KW - NiCoP/CoS nanoflowers

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