کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1274707 | 1497662 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Si on electrochemical hydrogen storage properties of crystalline Co
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Si on electrochemical hydrogen storage properties of crystalline Co Effect of Si on electrochemical hydrogen storage properties of crystalline Co](/preview/png/1274707.png)
چکیده انگلیسی
To investigate the effect of Si on the electrochemical properties of crystalline Co, Co-Si samples were synthesized by simple mixing of Co and Si, the electrochemical properties of them were studied as negative electrodes for nickel-metal hydride batteries in aqueous KOH solution. The results show that all the samples possess excellent electrochemical characteristics. When the weight ratio of Co to Si is 4:1, the sample electrode shows the best performance among the as-prepared materials, whose maximum discharge capacity is 419.9mAhg-1 and the capacity remains 352.2mAhg-1 after 50 cycles at the discharge current density 25mAg-1, the retention rate is 83.9%. Analysis of electrode reaction mechanism demonstrates that the discharge capacity is attributed to hydrogenation of Co, where the crucial role Si has a catalytic activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 33, Issue 4, February 2008, Pages 1317-1322
Journal: International Journal of Hydrogen Energy - Volume 33, Issue 4, February 2008, Pages 1317-1322
نویسندگان
Yanhui Zhang, Lifang Jiao, Huatang Yuan, Yunyun Zhang, Li Liu, Yijing Wang,