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Дата издания
30.06.2025Область исследования
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Аннотация (краткое описание)
The article discusses the prospects for developinglithium-ion batteries, emphasizinglithium-enriched transition metal oxides used as cathode materials for lithium-ion batteries (LIB). The primaryfocus is on materials with the formula xLi₂MnO₃⋅(1−x)LiMO₂ (where M=Mn, Ni, and Co) that exhibit high discharge capacity (over 250 mAh/g) and specific energy (over 950 Wh/kg), surpassing traditional cathode materials such as LiCoO₂, LiMn₂O₄, and LiFePO₄. These oxides combine the monoclinic phase of Li₂MnO₃ and the trigonal phase of LiMO₂, which ensures their high performance. However, the authors note severalproblems, including low speed characteristics, irreversible capacity of the first cycle, and degradation of voltage and capacity during cycling. These problems are linked to the creation of spinel-like structures, unwanted reactions at the sur-face with the electrolyte, and the release of oxygen. The authors propose modification methods like protective coatings, alloy-ing, and the creation of composite structures to enhance the characteristics. The article also includes an overview of other common cathode materials such as LiCoO₂, LiMn₂O₄, LiNiO₂ and their combinations, highlighting their advantages and limita-tions. Special attention is paid to promising materials, including LiNi₁/₃Co₁/₃Mn₁/₃O₂ and LiFePO₄, which have balanced elec-trochemical and economic properties. It was also emphasised that further research is needed to understand the degradation mechanismsand optimise the structure of lithium-enriched oxides. Resolving these issues can help create better and more reliable cathode materials for LIB, which is crucial for advancing electric vehicles and other energy-intensivetechnologies.DOI
https://doi.org/10.51301/ejsu.2025.i3.02Тип публикаций
Данный документ располагается в коллекциях
Научные издания SU
Engineering Journal of Satbayev University