Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries

Reversible oxygen reactions in Zn–air batteries require cost‐effective and highly‐active bifunctional electrocatalysts to substitute traditional noble‐metal based catalysts. Herein, a new and promising electrocatalytic material, ternary CoIn2S4 thiospinel, is demonstrated for effectively catalyzing...

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Main Authors: Fu, Gengtao, Wang, Jie, Chen, Yifan, Liu, Yu, Tang, Yawen, Goodenough, John B., Lee, Jong-Min
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/143612
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1436122020-09-14T04:46:44Z Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries Fu, Gengtao Wang, Jie Chen, Yifan Liu, Yu Tang, Yawen Goodenough, John B. Lee, Jong-Min School of Chemical and Biomedical Engineering Engineering::Chemical engineering Bifunctional Electrocatalyst CoIn2S4 Reversible oxygen reactions in Zn–air batteries require cost‐effective and highly‐active bifunctional electrocatalysts to substitute traditional noble‐metal based catalysts. Herein, a new and promising electrocatalytic material, ternary CoIn2S4 thiospinel, is demonstrated for effectively catalyzing oxygen reduction and oxygen evolution reactions (ORR and OER) with S‐doped reduced graphene oxide (S‐rGO) as an electronic conductor. Compared with Co9S8/S‐rGO (without In doping), the newly developed CoIn2S4/S‐rGO reveals superior electrocatalytic properties for the ORR (half‐wave potential of 0.83 V) and OER (overpotential of 0.37 V at 10 mA cm−2), demonstrating that the introduction of In can promote the reversible oxygen electrode reactions of CoIn2S4. The superior experimentally‐observed electrocatalytic properties are corroborated via density function theory investigations. Meanwhile, the synergistic improvements in the bifunctional activities resulting from the combination of CoIn2S4 and S‐rGO are also confirmed. As a proof of concept, home‐made Zn–air cells are assembled with CoIn2S4/S‐rGO as an air‐cathode. The developed Zn–air cells exhibit a high peak power density (133 mW cm−2) with an energy density of 951 Wh kgZn−1 and robust cycling stability over 150 cycles for 50 h, exceeding of those commercial Pt/C+RuO2 which highlights the practical viability of CoIn2S4/S‐rGO for rechargeable Zn–air batteries. Ministry of Education (MOE) 2020-09-14T04:46:43Z 2020-09-14T04:46:43Z 2018 Journal Article Fu, G., Wang, J., Chen, Y., Liu, Y., Tang, Y., Goodenough, J. B., & Lee, J.-M. (2018). Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries. Advanced Energy Materials, 8(31), 1802263-. doi:10.1002/aenm.201802263 1614-6840 https://hdl.handle.net/10356/143612 10.1002/aenm.201802263 31 8 1802263 en Advanced Energy Materials © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Chemical engineering
Bifunctional Electrocatalyst
CoIn2S4
spellingShingle Engineering::Chemical engineering
Bifunctional Electrocatalyst
CoIn2S4
Fu, Gengtao
Wang, Jie
Chen, Yifan
Liu, Yu
Tang, Yawen
Goodenough, John B.
Lee, Jong-Min
Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries
description Reversible oxygen reactions in Zn–air batteries require cost‐effective and highly‐active bifunctional electrocatalysts to substitute traditional noble‐metal based catalysts. Herein, a new and promising electrocatalytic material, ternary CoIn2S4 thiospinel, is demonstrated for effectively catalyzing oxygen reduction and oxygen evolution reactions (ORR and OER) with S‐doped reduced graphene oxide (S‐rGO) as an electronic conductor. Compared with Co9S8/S‐rGO (without In doping), the newly developed CoIn2S4/S‐rGO reveals superior electrocatalytic properties for the ORR (half‐wave potential of 0.83 V) and OER (overpotential of 0.37 V at 10 mA cm−2), demonstrating that the introduction of In can promote the reversible oxygen electrode reactions of CoIn2S4. The superior experimentally‐observed electrocatalytic properties are corroborated via density function theory investigations. Meanwhile, the synergistic improvements in the bifunctional activities resulting from the combination of CoIn2S4 and S‐rGO are also confirmed. As a proof of concept, home‐made Zn–air cells are assembled with CoIn2S4/S‐rGO as an air‐cathode. The developed Zn–air cells exhibit a high peak power density (133 mW cm−2) with an energy density of 951 Wh kgZn−1 and robust cycling stability over 150 cycles for 50 h, exceeding of those commercial Pt/C+RuO2 which highlights the practical viability of CoIn2S4/S‐rGO for rechargeable Zn–air batteries.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Fu, Gengtao
Wang, Jie
Chen, Yifan
Liu, Yu
Tang, Yawen
Goodenough, John B.
Lee, Jong-Min
format Article
author Fu, Gengtao
Wang, Jie
Chen, Yifan
Liu, Yu
Tang, Yawen
Goodenough, John B.
Lee, Jong-Min
author_sort Fu, Gengtao
title Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries
title_short Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries
title_full Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries
title_fullStr Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries
title_full_unstemmed Exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable Zn-air batteries
title_sort exploring indium-based ternary thiospinel as conceivable high-potential air-cathode for rechargeable zn-air batteries
publishDate 2020
url https://hdl.handle.net/10356/143612
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