Effective synthetic strategy for Zn0.76Co0.24S encapsulated in stabilized N-doped carbon nanoarchitecture towards ultra-long-life hybrid supercapacitors

Yuan Yang, Shuo Li, Wei Huang, Huihui Shangguan, Christian Engelbrekt, Shuwei Duan, Lijie Ci, Pengchao Si*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Hollow Zn0.76Co0.24S@N-doped carbon (HZCS@NC) electrode with hierarchical pores structure synthesized by a continuous ingenious method is presented in response of the demand of high-performance supercapacitors. The formation mechanism of the hollow structure, in which the Zn0.76Co0.24S nanoparticles were embedded in a nitrogen-doped carbon layer, was analyzed in this work. This electrode exhibits an excellent specific capacity of 937 C g−1 at 1 A g−1 and a satisfying capacity retention rate of about 112% after 40 000 cycles at a rate of 5 A g−1. Such preeminent performance is realized via (1) the short electrolyte diffusion length caused by the hollow structure, (2) the high electrochemical activities provide by the bimetallic sulfide and heteroatom doping, (3) the efficient combination of faradaic and electrical double layer materials, and (4) the conductive network with multiple holes. The evaluation of electrochemical performance of the assembled HZCS@NC//RGO hybrid supercapacitor (HSC) was also done. Impressively, the HSC gives a satisfactory energy density of 55.47 W h kg−1, a maximum power density of 16.55 kW kg−1, and an ultra-long (100 000) cycling life (108.9% retention of the initial capacity). This study presents a novel strategy for engineering stable poly-porous multicomponent hollow structures for the fabrication of prospective energy storage devices.
Original languageEnglish
JournalJournal of Materials Chemistry A
Volume7
Issue number24
Pages (from-to)14670-14680
Number of pages11
ISSN2050-7488
DOIs
Publication statusPublished - 2019

Cite this

@article{26436aa1660f4915bc9033ae9fe60b03,
title = "Effective synthetic strategy for Zn0.76Co0.24S encapsulated in stabilized N-doped carbon nanoarchitecture towards ultra-long-life hybrid supercapacitors",
abstract = "Hollow Zn0.76Co0.24S@N-doped carbon (HZCS@NC) electrode with hierarchical pores structure synthesized by a continuous ingenious method is presented in response of the demand of high-performance supercapacitors. The formation mechanism of the hollow structure, in which the Zn0.76Co0.24S nanoparticles were embedded in a nitrogen-doped carbon layer, was analyzed in this work. This electrode exhibits an excellent specific capacity of 937 C g−1 at 1 A g−1 and a satisfying capacity retention rate of about 112{\%} after 40 000 cycles at a rate of 5 A g−1. Such preeminent performance is realized via (1) the short electrolyte diffusion length caused by the hollow structure, (2) the high electrochemical activities provide by the bimetallic sulfide and heteroatom doping, (3) the efficient combination of faradaic and electrical double layer materials, and (4) the conductive network with multiple holes. The evaluation of electrochemical performance of the assembled HZCS@NC//RGO hybrid supercapacitor (HSC) was also done. Impressively, the HSC gives a satisfactory energy density of 55.47 W h kg−1, a maximum power density of 16.55 kW kg−1, and an ultra-long (100 000) cycling life (108.9{\%} retention of the initial capacity). This study presents a novel strategy for engineering stable poly-porous multicomponent hollow structures for the fabrication of prospective energy storage devices.",
author = "Yuan Yang and Shuo Li and Wei Huang and Huihui Shangguan and Christian Engelbrekt and Shuwei Duan and Lijie Ci and Pengchao Si",
year = "2019",
doi = "10.1039/C9TA03575C",
language = "English",
volume = "7",
pages = "14670--14680",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "RSC Publications",
number = "24",

}

Effective synthetic strategy for Zn0.76Co0.24S encapsulated in stabilized N-doped carbon nanoarchitecture towards ultra-long-life hybrid supercapacitors. / Yang, Yuan; Li, Shuo; Huang, Wei; Shangguan, Huihui; Engelbrekt, Christian; Duan, Shuwei; Ci, Lijie; Si, Pengchao.

In: Journal of Materials Chemistry A, Vol. 7, No. 24, 2019, p. 14670-14680.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Effective synthetic strategy for Zn0.76Co0.24S encapsulated in stabilized N-doped carbon nanoarchitecture towards ultra-long-life hybrid supercapacitors

AU - Yang, Yuan

AU - Li, Shuo

AU - Huang, Wei

AU - Shangguan, Huihui

AU - Engelbrekt, Christian

AU - Duan, Shuwei

AU - Ci, Lijie

AU - Si, Pengchao

PY - 2019

Y1 - 2019

N2 - Hollow Zn0.76Co0.24S@N-doped carbon (HZCS@NC) electrode with hierarchical pores structure synthesized by a continuous ingenious method is presented in response of the demand of high-performance supercapacitors. The formation mechanism of the hollow structure, in which the Zn0.76Co0.24S nanoparticles were embedded in a nitrogen-doped carbon layer, was analyzed in this work. This electrode exhibits an excellent specific capacity of 937 C g−1 at 1 A g−1 and a satisfying capacity retention rate of about 112% after 40 000 cycles at a rate of 5 A g−1. Such preeminent performance is realized via (1) the short electrolyte diffusion length caused by the hollow structure, (2) the high electrochemical activities provide by the bimetallic sulfide and heteroatom doping, (3) the efficient combination of faradaic and electrical double layer materials, and (4) the conductive network with multiple holes. The evaluation of electrochemical performance of the assembled HZCS@NC//RGO hybrid supercapacitor (HSC) was also done. Impressively, the HSC gives a satisfactory energy density of 55.47 W h kg−1, a maximum power density of 16.55 kW kg−1, and an ultra-long (100 000) cycling life (108.9% retention of the initial capacity). This study presents a novel strategy for engineering stable poly-porous multicomponent hollow structures for the fabrication of prospective energy storage devices.

AB - Hollow Zn0.76Co0.24S@N-doped carbon (HZCS@NC) electrode with hierarchical pores structure synthesized by a continuous ingenious method is presented in response of the demand of high-performance supercapacitors. The formation mechanism of the hollow structure, in which the Zn0.76Co0.24S nanoparticles were embedded in a nitrogen-doped carbon layer, was analyzed in this work. This electrode exhibits an excellent specific capacity of 937 C g−1 at 1 A g−1 and a satisfying capacity retention rate of about 112% after 40 000 cycles at a rate of 5 A g−1. Such preeminent performance is realized via (1) the short electrolyte diffusion length caused by the hollow structure, (2) the high electrochemical activities provide by the bimetallic sulfide and heteroatom doping, (3) the efficient combination of faradaic and electrical double layer materials, and (4) the conductive network with multiple holes. The evaluation of electrochemical performance of the assembled HZCS@NC//RGO hybrid supercapacitor (HSC) was also done. Impressively, the HSC gives a satisfactory energy density of 55.47 W h kg−1, a maximum power density of 16.55 kW kg−1, and an ultra-long (100 000) cycling life (108.9% retention of the initial capacity). This study presents a novel strategy for engineering stable poly-porous multicomponent hollow structures for the fabrication of prospective energy storage devices.

U2 - 10.1039/C9TA03575C

DO - 10.1039/C9TA03575C

M3 - Journal article

VL - 7

SP - 14670

EP - 14680

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 24

ER -