Effect of Initial Structure on Performance of High-Entropy Oxide Anodes for Li-Ion Batteries

Marques, Otavio J. B. J.; Walter, Michael D.; Timofeeva, Elena V.; Segre, Carlo U.

doi:10.3390/batteries9020115

Open AccessArticle

Effect of Initial Structure on Performance of High-Entropy Oxide Anodes for Li-Ion Batteries

by

Otavio J. B. J. Marques

^1,†

,

Michael D. Walter

²,

Elena V. Timofeeva

^3,4

and

Carlo U. Segre

^1,2,*,†

¹

Department of Mechanical, Materials and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA

²

Department of Physics and CSRRI, Illinois Institute of Technology, Chicago, IL 60616, USA

³

Department of Chemistry, Illinois Institute of Technology, Chicago, IL 60616, USA

⁴

Influit Energy, LLC, Chicago, IL 60612, USA

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Batteries 2023, 9(2), 115; https://doi.org/10.3390/batteries9020115

Submission received: 4 January 2023 / Revised: 23 January 2023 / Accepted: 1 February 2023 / Published: 7 February 2023

(This article belongs to the Special Issue Electrode Materials for Rechargeable Lithium Batteries)

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Abstract

Two different high-entropy oxide materials were synthesized and studied as Li-ion battery anodes. The two materials have the same active metal constituents but different inactive elements which result in different initial crystalline structures: rock salt for (MgFeCoNiZn)O and spinel for (TiFeCoNiZn)

_{3}

O

_{4}

. Local structural studies of the metal elements in these two materials over extended electrochemical cycling reveal that the redox processes responsible for the electrode capacity are independent of the initial crystallographic structure and that the capacity is solely dependent on the initial random distribution of the metal atoms and the amount of active metals in the starting material.

Keywords: high-entropy oxides; Li-ion batteries; X-ray absorption spectroscopy; local structure

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MDPI and ACS Style

Marques, O.J.B.J.; Walter, M.D.; Timofeeva, E.V.; Segre, C.U. Effect of Initial Structure on Performance of High-Entropy Oxide Anodes for Li-Ion Batteries. Batteries 2023, 9, 115. https://doi.org/10.3390/batteries9020115

AMA Style

Marques OJBJ, Walter MD, Timofeeva EV, Segre CU. Effect of Initial Structure on Performance of High-Entropy Oxide Anodes for Li-Ion Batteries. Batteries. 2023; 9(2):115. https://doi.org/10.3390/batteries9020115

Chicago/Turabian Style

Marques, Otavio J. B. J., Michael D. Walter, Elena V. Timofeeva, and Carlo U. Segre. 2023. "Effect of Initial Structure on Performance of High-Entropy Oxide Anodes for Li-Ion Batteries" Batteries 9, no. 2: 115. https://doi.org/10.3390/batteries9020115

APA Style

Marques, O. J. B. J., Walter, M. D., Timofeeva, E. V., & Segre, C. U. (2023). Effect of Initial Structure on Performance of High-Entropy Oxide Anodes for Li-Ion Batteries. Batteries, 9(2), 115. https://doi.org/10.3390/batteries9020115

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Effect of Initial Structure on Performance of High-Entropy Oxide Anodes for Li-Ion Batteries

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