Effect of Strain on Electronic Structure and Polaronic Conductivity in LiFePO4 DOI

Manisha,

Mukul Gupta,

V. Raghavendra Reddy

et al.

Physical Chemistry Chemical Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 26, 2024

Improving the electronic properties of active cathode materials can significantly impact design rechargeable batteries. In this study, we investigated influence micro-strain on structural and LiFePO4 (LFP) by performing combined core-level spectroscopy analysis electrical conductivity measurements. High-resolution X-ray diffraction measurements, followed Rietveld refinement analysis, revealed an increase in unit cell parameters due to enhanced lattice structure. 57Fe Mössbauer disclosed presence Fe2+ Fe3+ distorted octahedral environments, their relative concentrations provided a comprehensive understanding structure its relationship with LFP samples. The effect samples was using absorption (XAS). valence state 3d levels vicinity Fermi level, which sensitive local distortions. obtained Fe L-edge O K-edge spectral fingerprints demonstrated micro-strain, providing valuable insights into iron, crystal field covalent character between O. unique behaviour olivine were found be directly linked changes bonding character, varied micro-strain. We propose that observed expansion is weaker hybridization eg states oxygen. reflected enhancement polaronic order magnitude highly beneficial for improving performance electrode materials.

Language: Английский

Comprehensive analysis of improved LiFePO4 kinetics: Understanding barriers to fast charging DOI

Carolina Lara,

Marisol Maril,

Pablo Tobosque

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 640, P. 236747 - 236747

Published: March 13, 2025

Language: Английский

Citations

0
The effect of non-polar solvent on the structural properties and electrochemical performance of LiFePO4/C cathode materials synthesized by solid-state reaction DOI
Trias Prima Satya, Abdulloh Rifai, Iman Santoso

et al.

Carbon letters, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 8, 2024

Language: Английский

Citations

0
Effect of Strain on Electronic Structure and Polaronic Conductivity in LiFePO4 DOI

Manisha,

Mukul Gupta,

V. Raghavendra Reddy

et al.

Physical Chemistry Chemical Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 26, 2024

Improving the electronic properties of active cathode materials can significantly impact design rechargeable batteries. In this study, we investigated influence micro-strain on structural and LiFePO4 (LFP) by performing combined core-level spectroscopy analysis electrical conductivity measurements. High-resolution X-ray diffraction measurements, followed Rietveld refinement analysis, revealed an increase in unit cell parameters due to enhanced lattice structure. 57Fe Mössbauer disclosed presence Fe2+ Fe3+ distorted octahedral environments, their relative concentrations provided a comprehensive understanding structure its relationship with LFP samples. The effect samples was using absorption (XAS). valence state 3d levels vicinity Fermi level, which sensitive local distortions. obtained Fe L-edge O K-edge spectral fingerprints demonstrated micro-strain, providing valuable insights into iron, crystal field covalent character between O. unique behaviour olivine were found be directly linked changes bonding character, varied micro-strain. We propose that observed expansion is weaker hybridization eg states oxygen. reflected enhancement polaronic order magnitude highly beneficial for improving performance electrode materials.

Language: Английский

Citations

0