Effect of Sn addition on electrochemical activity of ribbons of Mg-Al-Ca anode material for rechargeable magnesium batteries fabricated by rapid solidification

• Published in: Journal of Japan Institute of Light Metals Vol. 75; no. 1; pp. 9 - 13
• Main Authors: TABATA, Hironobu, FUKUTA, Yoshitaka, AIDA, Tetsuo, KURIHARA, Hideki, SUZUKI, Mayumi, TSUKEDA, Tadayoshi, KIKURA, Kensei
• Format: Journal Article
• Language: Japanese
• Published: Tokyo The Japan Institute of Light Metals 15.01.2025; 一般社団法人 軽金属学会; Japan Science and Technology Agency
• Subjects: Aluminum; Anodes; Calcium; Electrode materials; Magnesium; magnesium rechargeable battery; Rapid solidification; Rechargeable batteries; Ribbons; single roll rapidly solidification method; Tin
• ISSN: 0451-5994; 0368-5306; 1880-8018; 2186-618X
• DOI: 10.2464/jilm.75.9

Magnesium-based batteries are potential candidates for next-generation rechargeable batteries due to the divalent nature of magnesium cations and the natural abundance of magnesium resources. In this study, the electrochemical activity of Mg-6mass%Al-3mass%Ca anodes combined with Sn was investigated. Thin ribbons of the anode specimens were prepared by a single-roll rapid solidification method. The results showed that the electrochemical activity increased upon adding 1 mass% Sn, while it decreased for 3 mass% Sn. Based on the results of an X-ray diffraction analysis, the addition of Sn led to the formation of Mg2Sn and Ca2Sn phases, which increased the lattice distortion. Scanning electron microscopy observations indicated that these secondary phases were homogeneously distributed for 1 mass% Sn addition, while they were coarsely distributed for 3 mass% Sn.