کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4766674 | 1424102 | 2017 | 47 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nano-sized cathode material LiMn0.5Fe0.5PO4/C synthesized via improved sol-gel routine and its magnetic and electrochemical properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cathode materials LiMn0.5Fe0.5PO4/C and LiMnPO4/C were synthesized by a high-energy ball-milling assisted sol-gel method. The LiMn0.5Fe0.5PO4 consists of nanorods and nanoparticles homogeneously wrapped with highly ordering carbon. The increased Néel-temperature and decreased effective magnetic moment of LiMn0.5Fe0.5PO4/C revealed the microstructure differences from LiMnPO4/C. Meanwhile, tiny amount of ferromagnetic impurities is detected in LiMn0.5Fe0.5PO4/C by magnetic tests. The synergetic effects of Fe substitution and carbon coating remarkably improve rate capacity and cyclic stability of LiMn0.5Fe0.5PO4/C. This solid solution delivers initial discharge capacities of 128.6 mAh gâ1 and 116.3 mAh gâ1 and capacity retentions of 93.5% and 90.3% after 100 cycles at 1C and 2C respectively, significantly better than LiMnPO4/C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 255, 20 November 2017, Pages 205-211
Journal: Electrochimica Acta - Volume 255, 20 November 2017, Pages 205-211
نویسندگان
Liying Liu, Guiyuan Chen, Bingtian Du, Yanyan Cui, Xi Ke, Jun Liu, Zaiping Guo, Zhicong Shi, Haiyan Zhang, Shulei Chou,