Lee, Boeun Choi, Jihwan Na, Subin Yoo, Dong-Joo Kim, Jong Hak Cho, Byung Won Kim, Yong-Tae Yim, Taeeun Choi, Jang Wook Oh, Si Hyoung 2024-01-19T19:31:50Z 2024-01-19T19:31:50Z 2021-09-02 2019-08-01 0169-4332 https://pubs.kist.re.kr/handle/201004/119695 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-S battery technology, that is, the incorporation of various metals that can speed up the conversion reaction between sulphur and Mg. English ELSEVIER STOICHIOMETRIC CU2S LITHIUM EFFICIENT ELECTROLYTE NANOPARTICLES COMPOSITE CHEMISTRY STORAGE Critical role of elemental copper for enhancing conversion kinetics of sulphur cathodes in rechargeable magnesium batteries Article 10.1016/j.apsusc.2019.04.143 1 APPLIED SURFACE SCIENCE, v.484, pp.933 - 940 APPLIED SURFACE SCIENCE 484 933 940 scie scopus 000471830700102 2-s2.0-85064869581 Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics Article STOICHIOMETRIC CU2S LITHIUM EFFICIENT ELECTROLYTE NANOPARTICLES COMPOSITE CHEMISTRY STORAGE Rechargeable magnesium battery Copper current collector Copper-polysulphide reaction Reaction kinetics Conversion reaction