Production of Eu-doped LiFePO4 by glass-ceramic technique and investigation of their thermal, structural, electrochemical performances

ALTIN S., Coban M., ALTUNDAĞ S., ALTIN E.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, cilt.33, sa.17, ss.13720-13730, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 17
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s10854-022-08305-7
  • Dergi Adı: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, MEDLINE, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.13720-13730
  • İnönü Üniversitesi Adresli: Evet

Özet

LiFe1-xEuxPO4 (x = 0-0.1) samples were successfully fabricated by glass-ceramics technique quenching from high temperature. Thermal properties were analyzed by DTA analysis. Crystallization activation energy and Avrami parameters were calculated depending on the Eu content and heating rates. The XRD analysis shows that there are two-phases of LiFePO4 and Li3Fe2P3O12 which compete with Eu-doping in the samples and it is found that the x = 0.02 sample has the lowest impurity phases. The battery cells exhibit similar cycling voltammetry (CV) data with the undoped LiFePO4 battery cells. The charging/discharging cycles measurements were done for C/2-rate at room conditions and the best capacity value for C/2-rate was obtained as 149.4 mAh/g for x = 0.02 Eu-doped sample. Although the best capacity was obtained for x = 0.02, the best capacity fade was obtained for x = 0.03 Eu-doped sample. C-rate measurements provided that x = 0.02 cells have the promising results for the battery applications.