Cobalt sulfide aerogel prepared by anion exchange method with enhanced pseudocapacitive and water oxidation performances

Qiuyue Gao; Zhenyu Shi; Kaiming Xue; Ziran Ye; Zhanglian Hong; Xinyao Yu; Mingjia Zhi

doi:10.1088/1361-6528/aab299

Cobalt sulfide aerogel prepared by anion exchange method with enhanced pseudocapacitive and water oxidation performances

Qiuyue Gao, Zhenyu Shi, Kaiming Xue, Ziran Ye, Zhanglian Hong, Xinyao Yu^*, Mingjia Zhi

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

26 Citations (Scopus)

Abstract

This work introduces the anion exchange method into the sol-gel process for the first time to prepare a metal sulfide aerogel. A porous Co₉S₈ aerogel with a high surface area (274.2 m² g^-1) and large pore volume (0.87 cm³ g^-1) has been successfully prepared by exchanging cobalt citrate wet gel in thioacetamide and subsequently drying in supercritical ethanol. Such a Co₉S₈ aerogel shows enhanced supercapacitive performance and catalytic activity toward oxygen evolution reaction (OER) compared to its oxide aerogel counterpart. High specific capacitance (950 F g^-1 at 1 A g^-1), good rate capability (74.3% capacitance retention from 1 to 20 A g^-1) and low onset overpotential for OER (220 mV) were observed. The results demonstrated here have implications in preparing various sulfide chalcogels. © 2018 IOP Publishing Ltd.

Original language	English
Article number	215601
Journal	Nanotechnology
Volume	29
Issue number	21
DOIs	https://doi.org/10.1088/1361-6528/aab299
Publication status	Published - 26 Mar 2018
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

aerogel
electrochemical
electrode
oxygen evolution reaction
supercapacitor

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title = "Cobalt sulfide aerogel prepared by anion exchange method with enhanced pseudocapacitive and water oxidation performances",

abstract = "This work introduces the anion exchange method into the sol-gel process for the first time to prepare a metal sulfide aerogel. A porous Co9S8 aerogel with a high surface area (274.2 m2 g-1) and large pore volume (0.87 cm3 g-1) has been successfully prepared by exchanging cobalt citrate wet gel in thioacetamide and subsequently drying in supercritical ethanol. Such a Co9S8 aerogel shows enhanced supercapacitive performance and catalytic activity toward oxygen evolution reaction (OER) compared to its oxide aerogel counterpart. High specific capacitance (950 F g-1 at 1 A g-1), good rate capability (74.3% capacitance retention from 1 to 20 A g-1) and low onset overpotential for OER (220 mV) were observed. The results demonstrated here have implications in preparing various sulfide chalcogels. {\textcopyright} 2018 IOP Publishing Ltd.",

keywords = "aerogel, electrochemical, electrode, oxygen evolution reaction, supercapacitor",

author = "Qiuyue Gao and Zhenyu Shi and Kaiming Xue and Ziran Ye and Zhanglian Hong and Xinyao Yu and Mingjia Zhi",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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TY - JOUR

T1 - Cobalt sulfide aerogel prepared by anion exchange method with enhanced pseudocapacitive and water oxidation performances

AU - Gao, Qiuyue

AU - Shi, Zhenyu

AU - Xue, Kaiming

AU - Ye, Ziran

AU - Hong, Zhanglian

AU - Yu, Xinyao

AU - Zhi, Mingjia

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/3/26

Y1 - 2018/3/26

N2 - This work introduces the anion exchange method into the sol-gel process for the first time to prepare a metal sulfide aerogel. A porous Co9S8 aerogel with a high surface area (274.2 m2 g-1) and large pore volume (0.87 cm3 g-1) has been successfully prepared by exchanging cobalt citrate wet gel in thioacetamide and subsequently drying in supercritical ethanol. Such a Co9S8 aerogel shows enhanced supercapacitive performance and catalytic activity toward oxygen evolution reaction (OER) compared to its oxide aerogel counterpart. High specific capacitance (950 F g-1 at 1 A g-1), good rate capability (74.3% capacitance retention from 1 to 20 A g-1) and low onset overpotential for OER (220 mV) were observed. The results demonstrated here have implications in preparing various sulfide chalcogels. © 2018 IOP Publishing Ltd.

AB - This work introduces the anion exchange method into the sol-gel process for the first time to prepare a metal sulfide aerogel. A porous Co9S8 aerogel with a high surface area (274.2 m2 g-1) and large pore volume (0.87 cm3 g-1) has been successfully prepared by exchanging cobalt citrate wet gel in thioacetamide and subsequently drying in supercritical ethanol. Such a Co9S8 aerogel shows enhanced supercapacitive performance and catalytic activity toward oxygen evolution reaction (OER) compared to its oxide aerogel counterpart. High specific capacitance (950 F g-1 at 1 A g-1), good rate capability (74.3% capacitance retention from 1 to 20 A g-1) and low onset overpotential for OER (220 mV) were observed. The results demonstrated here have implications in preparing various sulfide chalcogels. © 2018 IOP Publishing Ltd.

KW - aerogel

KW - electrochemical

KW - electrode

KW - oxygen evolution reaction

KW - supercapacitor

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U2 - 10.1088/1361-6528/aab299

DO - 10.1088/1361-6528/aab299

M3 - RGC 21 - Publication in refereed journal

C2 - 29485405

SN - 0957-4484

VL - 29

JO - Nanotechnology

JF - Nanotechnology

IS - 21

M1 - 215601

ER -

Cobalt sulfide aerogel prepared by anion exchange method with enhanced pseudocapacitive and water oxidation performances

Abstract

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