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説明:

Magnesium rechargeable batteries are potential successors to lithium-ion batteries owing to their low cost, superior safety, and high volumetric energy density. However, the development of high-energy and high-rate cathode materials remains challenging. Oxide-type cathodes, specifically spinels, have become a focus of attention due to their higher voltage operation capacity. Nevertheless, previous studies have predominantly centered on high-temperature operations on account of the sluggish diffusion of Mg ions in solids and low electrical conductivity. In this study, an electrically conductive CuMn2O4 ultrasmall (< 5 nm) spinel is fabricated using an alcohol reduction process. This ‘ultrananospinel’ shows a semi-reversible phase transition along with Mg insertion/ejection and a dual-redox system involving copper and manganese ions, exhibiting the high voltage operation (>1.5 V) with the theoretical discharge capacity of 225 mAh g–1, and high-rate capability.

権利情報:

• In Copyright
  

  This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Energy Materials, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsaem.4c01211

キーワード: spinel, nanoparticles, electrical conductivity, cathode, magnesium rechargeable battery

刊行年月日: 2024-06-24

出版者: American Chemical Society (ACS)

掲載誌:

• ACS Applied Energy Materials (ISSN: 25740962) vol. 7 issue. 12 p. 5308-5314

研究助成金:

• Ministry of Education, Culture, Sports, Science and Technology
• Light Metal Educational Foundation
• Japan Society for the Promotion of Science 23K1381603
• Japan Science and Technology Agency JPMJGX23S1
• Advanced Low Carbon Technology Research and Development Program JPMJAL1301

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4725

公開URL: https://doi.org/10.1021/acsaem.4c01211

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更新時刻: 2025-06-12 08:30:34 +0900

MDRでの公開時刻: 2025-06-12 08:20:33 +0900