Original scientific paper
https://doi.org/https://doi.org/10.5599/jese.2253
Optimal design of LiMn2O4 for high-rate applications by means of citric acid aided route and microwave heating
Yurii Shmatok
; Joint Department of Electrochemical Energy Systems of the National Academy of Science of Ukraine, 38A Vernadsky Ave., 03680 Kyiv, Ukraine
Hanna Potapenko
; Joint Department of Electrochemical Energy Systems of the National Academy of Science of Ukraine, 38A Vernadsky Ave., 03680 Kyiv, Ukraine
Sviatoslav Kirillov
; Joint Department of Electrochemical Energy Systems of the National Academy of Science of Ukraine, 38A Vernadsky Ave., 03680 Kyiv, Ukraine
Abstract
Due to the shortening of the duration of the process and the possibility of obtaining crystals of smaller and uniform size, microwave heating is considered an effective and promising tool for the synthesis of LiMn2O4, a valuable cathode material for lithium-ion batteries. However, the electrochemical characteristics of LiMn2O4 obtained with its help are almost completely absent and do not allow for drawing a sound conclusion regarding the advantages and drawbacks of microwave processing. Here, we describe the microwave-assisted citric acid aided synthesis, characterization and electrochemical performance of LiMn2O4. The disclosure of detailed working protocols enabling one to manufacture samples tolerant to extremely high currents is the main novelty of this paper. Specifically, our material sustains current loads up to 40 C (5920 mA g-1) and completely recovers after cycling in harsh conditions.
Keywords
Microwave processing; batteries; lithium manganese spinel; high-rate properties
Hrčak ID:
319751
URI
Publication date:
23.7.2024.
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