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Description:

Hollandite-type MnO2 and its solid solutions with TiO2 for cathode active material of rechargeable magnesium batteries were successfully synthesized with a hydrothermal method under atmospheric pressure. The solubility limit of Ti in Mn1−xTixO2 was x ≃ 0.2, and average particle size decreased with an increase in x. Despite the high surface area, Mn1−xTixO2 exhibited lower catalytic activity for oxidative electrolyte decomposition and better discharge capacity retention than MnO2. Capacity retention was the highest and the increment of charge overpotential during cycles was the smallest at x = 0.2.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Rechargeable magnesium battery, Hollandite-type α-Mn1−xTixO2, Atmospheric pressure hydrothermal synthesis

Date published: 2025-09-01

Publisher: Ceramic Society of Japan

Journal:

• Journal of the Ceramic Society of Japan (ISSN: 13486535) vol. 133 issue. 9 25049

Funding:

• JST JPMJGX23S1

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.2109/jcersj2.25049

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Updated at: 2025-09-03 12:30:21 +0900

Published on MDR: 2025-09-03 12:20:37 +0900