Solvothermal Synthesis of Superfine Li1−xMn2O4−σ Powders |
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Authors: | Wen-Jun LiEr-Wei Shi Zhi-Zhan ChenYan-Qing Zhen Zhi-Wen Yin |
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Institution: | Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai, 201800, China |
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Abstract: | Superfine Li1−xMn2O4−σ powders were successfully synthesized by the alcohol-thermal method using 0.01 mol of MnO2, 0.01mol of LiOH·H2O, and 0.06mol of NaOH as starting materials at 160-200°C. The products are characterized by XRD, TEM, ED, BET, and ICP. Results show that the Li0.74Mn2O3.74 powder prepared at 200°C has an average size of 180 nm with BET surface areas of 16.44 m2/g. A possible formation mechanism is proposed. It was concluded that the alcohol acts not only as the solvent but also as the reducing agent in the synthesis of Li1−xMn2O4−σ powders. The effects of reaction temperature and the contents of NaOH and LiOH on the formation of single phase Li1−xMn2O4−σ were investigated. |
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Keywords: | Li1&minus xMn2O4&minus σ solvothermal synthesis superfine powder |
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