Enhanced Structural and Electrochemical Properties of LiMn₂O₄ Nanocubes

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• 作者：Shabir Ahmad Akhoon ; Ashaq Hussain Sofi ; Seemin Rubab…
• 关键词：Template free ; environmentally friendly ; LiMn2O4 nanocubes ; stable structure ; cathode ; Li ; ion batteries
• 刊名：Journal of Electronic Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：46
• 期：2
• 页码：992-998
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials; Electronics and Microelectronics, Instrumentation; Solid State Physics;
• 出版者：Springer US
• ISSN：1543-186X
• 卷排序：46

文摘

Particle morphology has a great influence on the electrochemical properties of LiMn₂O₄, as it determines the intercalation/deintercalation of lithium ions and mass–electrolyte contact. Therefore, efforts have been focused on controlling the shape, size, and dimensionality of LiMn₂O₄ nanomaterials. In the current study, LiMn₂O₄ cathode material with novel morphology has been successfully synthesized using oleic acid as surfactant. The effect of oleic acid on the morphology and structure of LiMn₂O₄ has been studied. Structural, morphological, and electrochemical investigations reveal the influence of oleic acid in controlling the structure as well as morphology of the LiMn₂O₄ nanocubes, resulting in improved electrochemical properties. The obtained electrochemical properties reveal an initial discharge capacity of 131.5 mAh g−1 with better cyclic performance of oleic-acid-treated LiMn₂O₄ samples, retaining 70% of their initial discharge capacity after 100 cycles and exhibiting better rate capability than pristine sample.