Critical role of elemental copper for enhancing conversion kinetics of sulphur cathodes in rechargeable magnesium batteries

Boeun Lee; Jihwan Choi; Subin Na; Dong Joo Yoo; Jong Hak Kim; Byung Won Cho; Yong Tae Kim; Taeeun Yim; Jang Wook Choi; Si Hyoung Oh

doi:10.1016/j.apsusc.2019.04.143

Critical role of elemental copper for enhancing conversion kinetics of sulphur cathodes in rechargeable magnesium batteries

Boeun Lee, Jihwan Choi, Subin Na, Dong Joo Yoo, Jong Hak Kim, Byung Won Cho, Yong Tae Kim, Taeeun Yim, Jang Wook Choi, Si Hyoung Oh

Department of Chemical and Biomolecular Engineering

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

16 Citations (Scopus)

Abstract

Despite recent remarkable progress associated with the electrolyte, understanding of the reaction mechanism of magnesium-sulphur batteries is not yet mature. In particular, the lethargic redox reactions involved in the electrochemical conversion of sulphur and MgS in the cathode need to be overcome. Here, we unveil the reaction mechanism involving copper (Cu)metal, a common current collector for electrodes in rechargeable batteries. Specifically, Cu can undergo chemical reactions with polysulphides produced from the reaction of sulphur or MgS with Mg²⁺. Throughout the conversion reaction, these Cu–polysulphide reactions play a critical role to improve reaction kinetics markedly. The present investigation opens new avenues to the emerging Mg[sbnd]S battery technology, that is, the incorporation of various metals that can speed up the conversion reaction between sulphur and Mg.

Original language	English
Pages (from-to)	933-940
Number of pages	8
Journal	Applied Surface Science
Volume	484
DOIs	https://doi.org/10.1016/j.apsusc.2019.04.143
Publication status	Published - 2019 Aug 1

Bibliographical note

Funding Information:
This work was supported by the institutional program (2E29641)of the Korea Institute of Science and Technology and grants from the National Research Foundation of Korea (NRF-2011-C1AAA001-0030538, NRF-2017R1A6A1A06015181 (T.Y), NRF-2018R1A2A1A19023146 (J.W.C)). There are no conflicts to declare.

Publisher Copyright:
© 2019 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

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title = "Critical role of elemental copper for enhancing conversion kinetics of sulphur cathodes in rechargeable magnesium batteries",

abstract = "Despite recent remarkable progress associated with the electrolyte, understanding of the reaction mechanism of magnesium-sulphur batteries is not yet mature. In particular, the lethargic redox reactions involved in the electrochemical conversion of sulphur and MgS in the cathode need to be overcome. Here, we unveil the reaction mechanism involving copper (Cu)metal, a common current collector for electrodes in rechargeable batteries. Specifically, Cu can undergo chemical reactions with polysulphides produced from the reaction of sulphur or MgS with Mg2+. Throughout the conversion reaction, these Cu–polysulphide reactions play a critical role to improve reaction kinetics markedly. The present investigation opens new avenues to the emerging Mg[sbnd]S battery technology, that is, the incorporation of various metals that can speed up the conversion reaction between sulphur and Mg.",

author = "Boeun Lee and Jihwan Choi and Subin Na and Yoo, {Dong Joo} and Kim, {Jong Hak} and Cho, {Byung Won} and Kim, {Yong Tae} and Taeeun Yim and Choi, {Jang Wook} and Oh, {Si Hyoung}",

note = "Funding Information: This work was supported by the institutional program (2E29641)of the Korea Institute of Science and Technology and grants from the National Research Foundation of Korea (NRF-2011-C1AAA001-0030538, NRF-2017R1A6A1A06015181 (T.Y), NRF-2018R1A2A1A19023146 (J.W.C)). There are no conflicts to declare. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

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doi = "10.1016/j.apsusc.2019.04.143",

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AU - Lee, Boeun

AU - Choi, Jihwan

AU - Na, Subin

AU - Yoo, Dong Joo

AU - Kim, Jong Hak

AU - Cho, Byung Won

AU - Kim, Yong Tae

AU - Yim, Taeeun

AU - Choi, Jang Wook

AU - Oh, Si Hyoung

N1 - Funding Information: This work was supported by the institutional program (2E29641)of the Korea Institute of Science and Technology and grants from the National Research Foundation of Korea (NRF-2011-C1AAA001-0030538, NRF-2017R1A6A1A06015181 (T.Y), NRF-2018R1A2A1A19023146 (J.W.C)). There are no conflicts to declare. Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Despite recent remarkable progress associated with the electrolyte, understanding of the reaction mechanism of magnesium-sulphur batteries is not yet mature. In particular, the lethargic redox reactions involved in the electrochemical conversion of sulphur and MgS in the cathode need to be overcome. Here, we unveil the reaction mechanism involving copper (Cu)metal, a common current collector for electrodes in rechargeable batteries. Specifically, Cu can undergo chemical reactions with polysulphides produced from the reaction of sulphur or MgS with Mg2+. Throughout the conversion reaction, these Cu–polysulphide reactions play a critical role to improve reaction kinetics markedly. The present investigation opens new avenues to the emerging Mg[sbnd]S battery technology, that is, the incorporation of various metals that can speed up the conversion reaction between sulphur and Mg.

AB - Despite recent remarkable progress associated with the electrolyte, understanding of the reaction mechanism of magnesium-sulphur batteries is not yet mature. In particular, the lethargic redox reactions involved in the electrochemical conversion of sulphur and MgS in the cathode need to be overcome. Here, we unveil the reaction mechanism involving copper (Cu)metal, a common current collector for electrodes in rechargeable batteries. Specifically, Cu can undergo chemical reactions with polysulphides produced from the reaction of sulphur or MgS with Mg2+. Throughout the conversion reaction, these Cu–polysulphide reactions play a critical role to improve reaction kinetics markedly. The present investigation opens new avenues to the emerging Mg[sbnd]S battery technology, that is, the incorporation of various metals that can speed up the conversion reaction between sulphur and Mg.

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Critical role of elemental copper for enhancing conversion kinetics of sulphur cathodes in rechargeable magnesium batteries

Abstract

Bibliographical note

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