Ha, Jung Hoon Lee, Boeun Kim, Jong Hak Cho, Byung Won Kim, Sang-Ok Oh, Si Hyoung 2024-01-19T17:33:54Z 2024-01-19T17:33:54Z 2021-09-04 2020-05 2405-8297 https://pubs.kist.re.kr/handle/201004/118697 Despite intensive studies for the last several decades, the progress in the development of efficient cathode materials for rechargeable magnesium batteries is slow. In particular, most intercalation-based materials demonstrate lethargic reaction kinetics owing to a large activation barrier for Mg2+ migration. Here, for the first time, we evaluate silver chalcogenides as efficient cathode materials based on a conversion reaction mechanism. Simple one-pot ball milling is employed to produce silver chalcogenide nanoparticles embedded in a carbon matrix, which exhibits excellent electrochemical activity with Mg2+ at room temperature. Particularly, the Ag2Se composite delivers a theoretical magnesium storage capacity of 182 mA h g(-1) at a 0.1-C rate and 79 mA h g(-1) at a 1-C with an adequate stability up to 500 cycles. Structural analyses during cycling confirm that silver chalcogenides operate via a conversion reaction route. This investigation provides an opportunity to develop a new class of viable cathode materials utilizing conversion chemistry. English Elsevier BV Silver chalcogenides (Ag2X, X=S, Se) nanoparticles embedded in carbon matrix for facile magnesium storage via conversion chemistry Article 10.1016/j.ensm.2019.12.008 1 Energy Storage Materials, v.27, pp.459 - 465 Energy Storage Materials 27 459 465 N scie scopus 000521992800048 2-s2.0-85076547351 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article ALUMINUM-CHLORIDE COMPLEX OF-THE-ART ELECTROLYTE-SOLUTIONS DISPLACEMENT REACTION BATTERIES CATHODE SULFIDE INTERCALATION PERFORMANCE PROGRESS Silver chalcogenides Carbon composites Reaction mechanism Conversion-type cathodes Rechargeable magnesium batteries