کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5451664 | 1398551 | 2017 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Copolymerization-Assisted Preparation of Porous LiMn2O4 Hollow Microspheres as High Power Cathode of Lithium-ion Batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Porous LiMn2O4 hollow microspheres were facilely prepared by incorporation of Li and Mn elements into a spherical polymeric precursor through copolymerization of lithium and manganese acetates with resorcinol and hexamethylenetetramine and then burning off the organic matrix at appropriate temperatures in air. The LiMn2O4 inherited the spherical morphology of the polymeric precursor but showed hollow porous structure assembled by nanocrystals of about 50-100ânm in size. When tested as cathode of Li-ion batteries, the LiMn2O4 hollow spheres exhibited excellent rate capability and cycle stability. A discharge capacity of above 90 mAh gâ1 was maintained at 10 C (1 Câ=â120âmAâgâ1), and the cells can still deliver a discharge capacity over 100 mAh gâ1 after another 115 cycles at 0.5 C. With such excellent electrochemical properties, the prepared LiMn2O4 hollow microspheres could be promising cathode of Li-ion batteries for long term and high power applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 33, Issue 8, August 2017, Pages 781-787
Journal: Journal of Materials Science & Technology - Volume 33, Issue 8, August 2017, Pages 781-787
نویسندگان
Zhimin Zou, Zhaojin Li, Hui Zhang, Xiaohui Wang, Chunhai Jiang,