کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624994 | 989613 | 2014 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Long cycle life, high rate capability of truncated octahedral LiMn2O4 cathode materials synthesized by a solid-state combustion reaction for lithium ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Truncated octahedral LiMn2O4 nanoparticles were prepared by a high temperature solid-state combustion reaction using starch as fuel. The structure and morphology of the as-prepared material were analyzed by X-ray diffraction and electron microscopy. The results obtained show that the materials possess a perfect spinel structure, truncated octahedral morphology with an average grain size about 101.8 nm and uniform particle size distribution. The truncated octahedral LiMn2O4 exhibits high capacity and long-term cyclability with an initial discharge capacity of 107.9 mAh g-1 at 5 C. The capacity retention is 91.39% after 1000 cycles at 20 C. The excellent electrochemical performance can be mainly attributed to the nano-sized truncated octahedral structure, narrow particle size distribution and relatively lower crystallinity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 9, Part A, November 2014, Pages 14039-14043
Journal: Ceramics International - Volume 40, Issue 9, Part A, November 2014, Pages 14039-14043
نویسندگان
Yanjun Cai, Yudai Huang, Xingchao Wang, Dianzeng Jia, Xincun Tang,