Crystallographic and magnetic properties of α-NaFeO2 using Mössbauer spectroscopy

Jung, Jin Gyo; Baik, Jae Sung; Shim, In‐Bo; Kim, Chul Sung

doi:10.1007/s40042-021-00270-4

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“…This material possesses an α-NaFeO 2 structure within a hexagonal layered structure and a space group of R-3m, in alignment with prior investigations. 27 To compute the lattice parameters of the manufactured layered NCFMO material, structural refinement was performed. Table SI illustrates the specific parameters, detailing cell parameters of a = b = 2.945 Å and c = 16.427 Å.…”

Section: Resultsmentioning

confidence: 99%

Optimizing Electrochemical Performance in Sodium-Ion Batteries using O3-type Na_0.90Cu_0.22Fe_0.30Mn_0.48O₂ and Hard Carbon

Zhang

Zhou

et al. 2023

J. Electrochem. Soc.

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Sodium-ion batteries (SIBs) are being viewed as a prime alternative to lithium-ion batteries (LIBs) due to their resource availability, cost-effectiveness, safety, and superior power performance. Layered transition metal oxide cathode materials, in particular, have garnered interest for their high theoretical capacity and extended cycle life. This study focuses on the O3-type Na0.90Cu0.22Fe0.30Mn0.48O2(NCFMO), synthesized using the polyvinylpyrrolidone combustion method, showcasing notable specific capacity and capacity retention of over 80% after 200 cycles at 1C. Hard carbon has been identified as a potential candidate for commercialization among various anode materials, due to its high reversible capacity and stable structure. We assembled and evaluated a coin SIB full cell comprised of an NCFMO cathode and hard carbon anode (HC), which demonstrated optimal electrochemical performance at a positive-to-negative capacity ratio of 0.9. The study also explored the influence of the electrolyte on electrochemical performance, with NaClO4 (0.1 M NaClO4 in PC = 100Vol% with 2.0%FEC) found to deliver the best results. Further, we assessed the heat generation characteristics of the NCFMO/HC full cell, revealing higher total heat generation during charging compared to discharging. This comprehensive study contributes significantly to the ongoing efforts towards commercialization of SIBs.

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Section: Resultsmentioning

confidence: 99%

Optimizing Electrochemical Performance in Sodium-Ion Batteries using O3-type Na_0.90Cu_0.22Fe_0.30Mn_0.48O₂ and Hard Carbon

Zhang

Zhou

et al. 2023

J. Electrochem. Soc.

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Crystallographic and magnetic properties of α-NaFeO2 using Mössbauer spectroscopy

Cited by 1 publication

References 20 publications

Optimizing Electrochemical Performance in Sodium-Ion Batteries using O3-type Na_0.90Cu_0.22Fe_0.30Mn_0.48O₂ and Hard Carbon

Optimizing Electrochemical Performance in Sodium-Ion Batteries using O3-type Na_0.90Cu_0.22Fe_0.30Mn_0.48O₂ and Hard Carbon

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Crystallographic and magnetic properties of α-NaFeO2 using Mössbauer spectroscopy

Cited by 1 publication

References 20 publications

Optimizing Electrochemical Performance in Sodium-Ion Batteries using O3-type Na0.90Cu0.22Fe0.30Mn0.48O2 and Hard Carbon

Optimizing Electrochemical Performance in Sodium-Ion Batteries using O3-type Na0.90Cu0.22Fe0.30Mn0.48O2 and Hard Carbon

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Optimizing Electrochemical Performance in Sodium-Ion Batteries using O3-type Na_0.90Cu_0.22Fe_0.30Mn_0.48O₂ and Hard Carbon

Optimizing Electrochemical Performance in Sodium-Ion Batteries using O3-type Na_0.90Cu_0.22Fe_0.30Mn_0.48O₂ and Hard Carbon