Phase change caused by Jahn-Teller distortion in Ni doped MnCo2O4 spinel

Xu, Lei; Zhen, Congmian; Zhao, Senmiao; Liu, Lu; Ma, Li; Shui, Zizhou; Zhao, Dewei; Li, Guoke; Hou, Denglu

doi:10.1016/j.jallcom.2023.172869

Journal of Alloys and Compounds

2024

DOI: 10.1016/j.jallcom.2023.172869

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Phase change caused by Jahn-Teller distortion in Ni doped MnCo2O4 spinel

Lei Xu,

Congmian Zhen,

Senmiao Zhao

et al.

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2024

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Enhanced Cycling Performance of LiMn₂O₄ Electrode Including Cobalt and Vanadium Codoping for Lithium Extraction from Brine

Mojtahedi,

Askari,

Dolati

et al. 2024

Energy Fuels

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This study explores the enhancement of LiMn 2 O 4 (LMO) electrodes for lithium extraction from brine through cobalt (Co) and vanadium(V) codoping. Despite LMO's theoretical capacity, its practical application is limited by rapid structural degradation during cycling. The codoping strategy aims to improve the cycle stability of LMO while preserving its capacity. The LiCo 0.025 V 0.025 Mn 1.95 O 4 (LCVMO) electrode exhibited a 30.8% increase in lithium diffusion coefficient and superior structural durability compared to pristine LMO. After 60 cycles, the LCVMO electrode retained a discharge capacity of 111.9 mAh g −1 , significantly higher than LMO's 77 mAh g −1 . Additionally, LCVMO demonstrated a low energy consumption (8.51 Wh/mol) and a high lithium adsorption capacity (18.7 mg/g) during extraction from simulated brine. UV−visible spectral analysis revealed that vanadium doping introduced two distinct band gaps (5.5 and 4.75 eV) in the LCVMO sample, compared to a single band gap of 5.25 eV in LMO, indicating enhanced conductivity. These findings suggest that Co and V codoping enhances the electrochemical performance of LMO, making LCVMO a promising candidate for efficient lithium extraction.

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Enhanced Cycling Performance of LiMn₂O₄ Electrode Including Cobalt and Vanadium Codoping for Lithium Extraction from Brine

Mojtahedi,

Askari,

Dolati

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

show abstract

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Phase change caused by Jahn-Teller distortion in Ni doped MnCo2O4 spinel

Cited by 1 publication

References 38 publications

Enhanced Cycling Performance of LiMn₂O₄ Electrode Including Cobalt and Vanadium Codoping for Lithium Extraction from Brine

Enhanced Cycling Performance of LiMn₂O₄ Electrode Including Cobalt and Vanadium Codoping for Lithium Extraction from Brine

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Phase change caused by Jahn-Teller distortion in Ni doped MnCo2O4 spinel

Cited by 1 publication

References 38 publications

Enhanced Cycling Performance of LiMn2O4 Electrode Including Cobalt and Vanadium Codoping for Lithium Extraction from Brine

Enhanced Cycling Performance of LiMn2O4 Electrode Including Cobalt and Vanadium Codoping for Lithium Extraction from Brine

Contact Info

Product

Resources

About

Enhanced Cycling Performance of LiMn₂O₄ Electrode Including Cobalt and Vanadium Codoping for Lithium Extraction from Brine

Enhanced Cycling Performance of LiMn₂O₄ Electrode Including Cobalt and Vanadium Codoping for Lithium Extraction from Brine