کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7999901 | 1516270 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on the hydrogen storage and electrochemical properties of Mm0.75Mg0.25Ni3.5Co0.2Alx (x = 0.0-0.4) alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Study on the hydrogen storage and electrochemical properties of Mm0.75Mg0.25Ni3.5Co0.2Alx (x = 0.0-0.4) alloys Study on the hydrogen storage and electrochemical properties of Mm0.75Mg0.25Ni3.5Co0.2Alx (x = 0.0-0.4) alloys](/preview/png/7999901.png)
چکیده انگلیسی
Mm0.75Mg0.25Ni3.5Co0.2Alx (x = 0.0-0.4) alloys were prepared by the magnetic induction melting method. The influence of Al content on the hydrogen storage and electrochemical properties of the alloy was investigated. The results show that the hydrogen storage capacity is gradually reduced as the Al content increases. The (La,Pr,Nd)Ni5 cell volume and the change of enthalpy also decrease as Al is added. Although the discharge capacity decreases with increasing Al content, the addition of Al can reduce the stability of Mm0.75Mg0.25Ni3.5Co0.2Alx (x = 0.0-0.4) hydride and improve the performance of hydrogen desorption thermodynamics. For the alloy electrode without Al, the maximum discharge capacity (Cmax) and retention discharge capacity after 100 charge-discharge cycles (C100) is 385 mA h gâ1 and 202 mA h gâ1, respectively. For the alloy electrode with x = 0.4, while Cmax is only 323 mA h gâ1, C100 is 273 mA h gâ1, which is much higher than that of the alloy without Al. The addition of Al can improve the charge-discharge cycle lifetime effectively and can increase the limiting current IL. The kinetic performance of the Mm0.75Mg0.25Ni3.5Co0.2Alx (x = 0.0-0.4) alloy electrode can also be improved by increasing the Al content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 623, 25 February 2015, Pages 311-316
Journal: Journal of Alloys and Compounds - Volume 623, 25 February 2015, Pages 311-316
نویسندگان
Lan Zhiqiang, Peng Wenqi, Fu Shuying, Wei Wenlou, Wei Ningyan, Guo Jin,