Study of CaSrFe 0.75 Co 0.75 Mn 0.5 O 6-δ as an Anode in Li-Ion Battery

Arjun Kumar Thapa (), Ariella Fogel and Ram Krishna Hona ()
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Arjun Kumar Thapa: Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY 40292, USA
Ariella Fogel: Environmental Science Department, United Tribes Technical College, Bismarck, ND 58504, USA
Ram Krishna Hona: Environmental Science Department, United Tribes Technical College, Bismarck, ND 58504, USA

Energies, 2025, vol. 18, issue 10, 1-12

Abstract: The application of oxygen-deficient perovskites (ODPs) has attracted interest as anode materials for lithium-ion batteries for their unique properties. One such material, CaSrFe 0.75 Co 0.75 Mn 0.5 O 6-δ , has been studied extensively. The structure of CaSrFe 0.75 Co 0.75 Mn 0.5 O 6-δ was investigated using various techniques, including Rietveld refinements with X-ray diffraction and neutron diffraction. Additionally, iodometric titration and X-ray photoelectron spectroscopy were employed to study the oxygen-deficiency amount and the transition metal’s oxidation states in the material. As an anode material, CaSrFe 0.75 Co 0.75 Mn 0.5 O 6-δ exhibits promising performance. It delivers 393 mAhg −1 of discharge capacity at a current density of 25 mAg −1 after 100 cycles. Notably, this capacity surpasses both the theoretical graphite anode capacity (372 mAhg −1 ) and that of the calcium analog reported previously. Furthermore, the electrochemical performance of CaSrFe 0.75 Co 0.75 Mn 0.5 O 6-δ remains highly reversible across various current densities ranging from 25 to 500 mAg −1 . This suggests the material’s excellent stability and reversibility during charge–discharge cycles, showing its probable application as an anode for lithium-ion batteries. The mechanism of lithium intercalation and deintercalation within CaSrFe 0.75 Co 0.75 Mn 0.5 O 6-δ has also been discussed. Understanding this mechanism is crucial for optimizing the battery’s performance and ensuring long-term stability. Overall, this study highlights the significant potential of oxygen-deficient perovskites, particularly CaSrFe 0.75 Co 0.75 Mn 0.5 O 6-δ , for applications as an anode material for lithium-ion batteries, offering enhanced capacity and stability compared with traditional graphite-based anodes.

Keywords: XRD; electrodes; charge–discharge; battery cycle; perovskite oxides (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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