Solvothermal synthesis of nano LiMn0.9Fe0.1PO4: Reaction mechanism and electrochemical properties
Solvothermal synthesis of nano LiMn0.9Fe0.1PO4: Reaction mechanism and electrochemical properties
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DOI：
10.1016/j.jpowsour.2013.12.010
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发表时间：
2014-05
影响因子：
9.2
通讯作者：
F. Ye;Li Wang;Xiangming He;M. Fang;Zhongjia Dai;Jixian Wang;Chaochao Huang;F. Lian;Jianlong Wang;Guangyu Tian;M. Ouyang
中科院分区：
文献类型：
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作者：
F. Ye;Li Wang;Xiangming He;M. Fang;Zhongjia Dai;Jixian Wang;Chaochao Huang;F. Lian;Jianlong Wang;Guangyu Tian;M. Ouyang
采用溶剂热法合成了锂离子电池用纳米材料LiMn0.9Fe0.1PO4（LMFP）。讨论了加料顺序、反应时间、反应温度等实验参数，并用XRD、SEM和TEM对所得的低分子荧光蛋白进行了表征。为了理解LMFP的形成，提出了一种反应机理。研究表明，适当浓度的MLi（M = Fe, Mn）对位缺陷可以改善材料的电化学性能。所得LMFP的充放电数据表明，在180℃下合成4h，在氩气保护下650℃下用蔗糖烧结5h的limn0.9 fe0.1 po4材料在0.1C速率下的放电容量最高，为149.2 mAh g−1。
Solvothermal approach is used to synthesize LiMn0.9Fe0.1PO4(LMFP) nanomaterial for Li-ion batteries (LIBs). Experimental parameters such as feeding sequences, reaction time and reaction temperature are discussed and the obtained LMFP are characterized by XRD, SEM and TEM. To understand the formation of LMFP, a reaction mechanism is proposed. The proposed mechanism indicates that the suitable concentration of MLi(M = Fe, Mn) antisite defect can improve the electrochemical performance of the material. The charge–discharge data of obtained LMFP shows that the LiMn0.9Fe0.1PO4material synthesized at 180 °C for 4 h and then sintering with sucrose at 650 °C for 5 h under argon protection has the highest discharge capacity, which is 149.2 mAh g−1at 0.1C rate.