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American Chemical Society, ACS Applied Materials and Interfaces, 15(5), p. 7592-7598, 2013

DOI: 10.1021/am401894t

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Microwave-Assisted Synthesis of High-Voltage Nanostructured LiMn1.5Ni0.5O4 Spinel: Tuning the Mn3+ Content and Electrochemical Performance

Journal article published in 2013 by Charl Jeremy Jafta ORCID, Mkhulu K. Mathe, Ncholu Manyala, Wiets D. Roos, Kenneth Ikechukwu Ozoemena
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The LiMn1.5Ni0.5O4 spinel as an important lithium ion battery cathode material that has continued to receive major research attention because of its high operating voltage (~ 4.8 V). This study interrogates the impact of microwave irradiation on the Mn3+ concentration and electrochemistry of the LiMn1.5Ni0.5O4 spinel. It is shown that microwave is capable of tuning the Mn3+ content of the spinel for enhanced electrochemical performance (high capacity, high capacity retention, excellent rate capability, and fast Li+ insertion/extraction kinetics). This finding promises to revolutionize the application of microwave irradiation for improved performance of the LiMn1.5Ni0.5O4 spinel, especially in high rate applications.