What question did this study set out to answer?

This research aims to unveil the role of oxygen in lithium-rich oxides during electrochemical cycling, focusing on the behavior of the Li4FeSbO6 material.

March 26, 2015Journal of the American Chemical Society

Understanding the Roles of Anionic Redox and Oxygen Release during Electrochemical Cycling of Lithium-Rich Layered Li4FeSbO6

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Authors

EMEric McCallaNational Research Council Canada MSMoulay Tahar SougratiUniversité de Montpellier GRGwenaëlle RousseCollège de France

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Implication

Randomized trial shows the complex behaviors of oxygen during electrochemical cycling in lithium-rich materials, indicating significant implications for battery design.

Key Points

This research aims to unveil the role of oxygen in lithium-rich oxides during electrochemical cycling, focusing on the behavior of the Li4FeSbO6 material.
Thorough electrochemical studies using various methods to analyze Li4FeSbO6 materials.
Observation of voltage plateaus during cycling, identifying distinct behavior of oxygen species.
Characterization of oxidation states of iron and transformation processes during charging.
Oxygen release occurs at a distinct voltage plateau, separate from peroxo/superoxo formation.
Direct demonstration of limited reversibility of different oxygenated species (O2(n-); n = 1, 2, 3).
During charge to 4.2 V, iron is oxidized from +3 to +4, followed by oxygen release indicative of reductive coupling.

Cite This Study

McCalla et al. (2015) studied this question.

synapsesocial.com/papers/6a07448c05e809827fd3dcdf https://doi.org/10.1021/jacs.5b01424

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Implication

Randomized trial shows the complex behaviors of oxygen during electrochemical cycling in lithium-rich materials, indicating significant implications for battery design.

Understanding the Roles of Anionic Redox and Oxygen Release during Electrochemical Cycling of Lithium-Rich Layered Li4FeSbO6

Discussion

Member takes

Implication

Key Points

Cite This Study

Understanding the Roles of Anionic Redox and Oxygen Release during Electrochemical Cycling of Lithium-Rich Layered Li4FeSbO6

Discussion

Member takes

Implication

Key Points

Cite This Study

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