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author:

Huang, Youzhang (Huang, Youzhang.) [1] | Quan, Liang (Quan, Liang.) [2] | Liu, Tianqing (Liu, Tianqing.) [3] | Chen, Qidi (Chen, Qidi.) [4] | Cai, Daoping (Cai, Daoping.) [5] | Zhan, Hongbing (Zhan, Hongbing.) [6]

Indexed by:

EI

Abstract:

Mixed transition metal sulfides with hollow structures hold great promise for energy-related applications. However, most of them are in the powder form, which should be mixed with unwanted polymer binders and conductive agents. In this study, a facile two-step strategy has been developed to grow mesoporous and hollow Ni-Zn-Co-S nanosword arrays (NSAs) on a nickel foam (NF) substrate with robust adhesion, which involves the hydrothermal growth of bimetallic Zn-Co-ZIF NSAs on NF and subsequent transformation into hollow Ni-Zn-Co-S NSAs through the sulfurization process. Benefiting from the unique structural and compositional advantages as well as directly grown conductive substrate, the Ni-Zn-Co-S-0.33 NSAs/NF electrode exhibits the best electrochemical performance when investigated as a binder-free electrode for supercapacitors. Impressively, the Ni-Zn-Co-S-0.33 NSAs/NF electrode delivers a high areal capacity of 1.11 mA h cm-2 at the current density of 10 mA cm- 2, and the corresponding specific capacity is as high as 358.1 mA h g-1. Moreover, an asymmetric supercapacitor (ASC) device based on the Ni-Zn-Co-S-0.33 NSAs/NF as the positive electrode and Bi2O3/NF as the negative electrode has been successfully fabricated, and can deliver a high energy density of 91.7 W h kg-1 at a power density of 458 W kg-1 and maintain the energy density of 66.9 W h kg- 1 at a high power density of 6696 W kg-1. The electrochemical results suggest that the hollow Ni-Zn-Co-S NSAs would possess great potential for applications in high- performance supercapacitors. © The Royal Society of Chemistry.

Keyword:

Binders Bismuth compounds Electrochemical electrodes Nickel compounds Sulfur compounds Supercapacitor Transition metals Zinc compounds

Community:

  • [ 1 ] [Huang, Youzhang]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 2 ] [Quan, Liang]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 3 ] [Liu, Tianqing]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 4 ] [Chen, Qidi]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 5 ] [Cai, Daoping]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 6 ] [Zhan, Hongbing]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 7 ] [Zhan, Hongbing]Key Laboratory of Eco-materials Advanced Technology, Fuzhou University, Fujian; 350108, China

Reprint 's Address:

  • [cai, daoping]college of materials science and engineering, fuzhou university, fujian; 350108, china

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Source :

Nanoscale

ISSN: 2040-3364

Year: 2018

Issue: 29

Volume: 10

Page: 14171-14181

6 . 9 7

JCR@2018

5 . 8 0 0

JCR@2023

ESI HC Threshold:158

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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