LT-LiMn0.5Ni0.5O2: a unique co-free cathode for high energy Li-ion cells

Boyu Shi; Jihyeon Gim; Linze Li; Chongmin Wang; Anh Vu; Jason R. Croy; Michael M. Thackeray; Eungje Lee

doi:10.1039/D1CC04334J

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LT-LiMn_0.5Ni_0.5O₂: a unique co-free cathode for high energy Li-ion cells†

Boyu Shi,

^a Jihyeon Gim,

^a Linze Li,

^b Chongmin Wang,

^b Anh Vu,^a Jason R. Croy,^a Michael M. Thackeray^a and Eungje Lee

*^a

Author affiliations

* Corresponding authors

^a Electrochemical Energy Storage Department, Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
E-mail: eungje.lee@anl.gov

^b Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352, USA

Abstract

A novel LiMn_0.5Ni_0.5O₂ cathode with a predominant, partially-disordered lithiated-spinel structure has been prepared by a ‘low temperature’ (LT) synthesis. Li/LT-LiMn_0.5Ni_0.5O₂ cells operate between 5.0 and 2.5 V with good cycling stability, yielding a capacity of 225 mA h g⁻¹, principally by redox reactions on the nickel ions on distinct voltage plateaus at ∼3.6 V and ∼4.6 V.

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Article information

DOI: https://doi.org/10.1039/D1CC04334J
Article type: Communication
Submitted: 09 Aug 2021
Accepted: 15 Sep 2021
First published: 17 Sep 2021

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Chem. Commun., 2021,57, 11009-11012

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LT-LiMn_0.5Ni_0.5O₂: a unique co-free cathode for high energy Li-ion cells

B. Shi, J. Gim, L. Li, C. Wang, A. Vu, J. R. Croy, M. M. Thackeray and E. Lee, Chem. Commun., 2021, 57, 11009 DOI: 10.1039/D1CC04334J

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