Beyond Half-Cell Success: Cathode-Electrolyte Reactivity Driving Magnesium Battery Full-Cell Degradation at Elevated Temperature.

ABSTRACT: Rechargeable magnesium battery (RMB) is gaining attention as a promising alternative to lithium-ion batteries, offering advantages such as low cost and high theoretical capacity of magnesium metal anodes. Yet, realizing stable, high-voltage RMB full cells remains a considerable challenge. In this study, a full-cell configuration is explored combining a vanadium oxide (VO₂) cathode with a weakly coordinating anion-based electrolyte. While encouraging performance is observed in half-cell setups, translating it into full-cell operation proves complex, particularly at elevated temperatures. At 60 °C, the initial discharge capacity of 77 mAh g^-1 decreases notably to 28 mAh g^-1 in the second cycle, whereas performance at 30 °C remains more stable ≈25 mAh g^-1

SUBMITTER: Setiawan D 

PROVIDER: S-EPMC12561278 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature