کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7888572 | 1509794 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Syntheses of nano-sized Co-based powders by carbothermal reduction for anode materials of lithium ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Co oxide powders were synthesized by spray drying, calcining, and then ball milling. Nano-sized Co-based powders were then prepared by carbothermal reduction at 873Â K, 1073Â K, and 1173Â K of the synthesized Co oxide powders. Then, the electrochemical properties of the electrodes made with the Co-based powders were examined to evaluate their suitability as anode materials for Li-ion batteries. It was reported that among Co, CoO, and Co3O4, Co3O4 had the best cycling performance. However, in this work, Co showed the best cycling performance. This means that the mechanisms of the cycling performance of CoO and Co which were synthesized by different heat treatment methods are different from each other. The initial discharge capacities of three electrodes made with the powders reduction-treated at 873Â K, 1073Â K, and 1173Â K were similar and about 1100Â mAÂ h/g, respectively. However, the electrodes made with the powders reduction-treated at 873Â K and 1073Â K had the discharge capacities at the second cycle which were less than 50% of the discharge capacity of the electrode made with the powder reduction-treated at 1173Â K. The electrode made with the powder reduction-treated at 1173Â K had a discharge capacity of 750Â mAÂ h/g at the 20th cycle, demonstrating that this electrode had good cycling performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 4, March 2018, Pages 4225-4229
Journal: Ceramics International - Volume 44, Issue 4, March 2018, Pages 4225-4229
نویسندگان
Seong-Hyeon Hong, Myoung Youp Song,