刊名:Journal of Materials Science: Materials in Electronics
出版年:2016
出版时间:May 2016
年:2016
卷:27
期:5
页码:5408-5414
全文大小:1,684 KB
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1. Department of Chemical Engineering, Ningbo Polytechnic College, Ningbo, 315800, China 2. Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, Hubei University, Wuhan, 430062, China 3. Key Laboratory of Functional Materials and Chemistry for Performance and Resource of Guizhou Education Department, Anshun University, Anshun, 561000, China
刊物类别:Chemistry and Materials Science
刊物主题:Chemistry Optical and Electronic Materials Characterization and Evaluation Materials
出版者:Springer New York
ISSN:1573-482X
文摘
Spinel phase LiMn2O4 is synthesized by a polyethylene glycol (PEG)-assisted co-precipitation method. The samples are characterized by X-ray diffraction and scanning electron microscopy techniques. The LiMn2O4 samples synthesized have similar morphology and uniform size of about 150–350 nm. The electrochemical measurements show that as-prepared LiMn2O4 nanoparticle sample using PEG with the molecular weight as 4000 (PEG-4000) shows the best cycling performance and highest rate capability among all samples, its initial discharge capacity is 133 mAhg−1 and maintains at 122 mAhg−1 under 0.5 °C after 50 cycles. The loss of its capacity was just 5.1 %. To control the particle size of LiMn2O4 is one of important factors for its application as a cathode material.