کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147886 | 1497389 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of the electrochemical performance of CoB amorphous alloy through the addition of A2B7-type alloy
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhancement of the electrochemical performance of CoB amorphous alloy through the addition of A2B7-type alloy Enhancement of the electrochemical performance of CoB amorphous alloy through the addition of A2B7-type alloy](/preview/png/5147886.png)
چکیده انگلیسی
The CoBâxA2B7 composites (x = 0-30 wt.%) were prepared by ball milling the powdery mixture of both pristine alloys. As negative electrodes in nickel-metal hydride (Ni/MH) rechargeable batteries, the CoBâxA2B7 composites exhibit a superior electrochemical performance. It has a maximum discharge capacity (Cmax) of up to 730 mAh/g and its high-rate dischargeability (HRD) is significantly increased to 82.5% for x = 30 wt.% at a discharge density of 900 mA/g. The capacity retention rate (C100/Cmax) is increased firstly from 37.1% (x = 0 wt.%) to 45.6% (x = 5 wt.%), then decreased to 42.4% (x = 30 wt.%). The anodic polarization (AP) and potential-step measurements indicate that the diffusion ability of hydrogen atoms in the composite electrodes is distinctly improved by doping with A2B7-type alloy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 36, 28 September 2016, Pages 16142-16147
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 36, 28 September 2016, Pages 16142-16147
نویسندگان
Shujun Qiu, Jianling Huang, Feihong Shen, Rui Pang, Hailiang Chu, Yongjin Zou, Cuilin Xiang, Erhu Yan, Fen Xu, Lixian Sun, Huaiying Zhou, Liuzhang Ouyang, Min Zhu,