Electrochemical hydrogen storage properties of mechanically alloyed Mg0.8Ti0.2-xMnxNi (x 1/4 0, 0.025, 0.05, 0.1) type alloys

Küçükdeveci N., AKAY ERDOĞAN I., BİNAL AYBAR A., ANIK M.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.47, sa.4, ss.2511-2519, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 47 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.ijhydene.2021.10.174
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Artic & Antarctic Regions, Chimica, Communication Abstracts, Compendex, Environment Index, INSPEC
  • Sayfa Sayıları: ss.2511-2519
  • Anahtar Kelimeler: Mg-Ti-Mn-Ni quaternary Alloys, Hydrogen storage alloys, Electrochemical performance, Mechanical alloying, AS-CAST, ELECTRODE, CO, PERFORMANCES, MN, TI, NANOCRYSTALLINE, MG2NI, CAPACITIES, BATTERIES
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Mechanical alloying was used in the synthesis of Mg0.8Ti0.2-xMnxNi (x = 0, 0.025, 0.05, 0.1) quaternary alloys to analyze the effect of Mn substitution for Ti on the electrochemical performance of MgNi alloys. The milling was carried out for 25 h. By adding a small amount of Mn (x = 0.025) to the Mg0.8Ti0.2Ni alloy, a completely amorphous structure was obtained. The maximum discharge capacity of the Mg0.8Ti0.175Mn0.025Ni alloy was observed as 543 mAh g-1at the initial charge/discharge cycle. When x = 0 and x = 0.05, the discharging performances of Mg0.8Ti0.2-xMnxNi alloys were approximately the same. However, when x = 0.1, the lowest initial discharge capacity (401 mAh g-1) and discharge capacity performance were observed. The capacity retention rates of Mg0.8Ti0.175Mn0.025Ni, Mg0.8Ti0.2Ni, Mg0.8Ti0.05Mn0.05Ni, and Mg0.8Ti0.1Mn0.1Ni alloys were 81%, 68%, %67, and 47%, respectively, at the 20th cycle. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.