| CALCULATION OF ELECTROCHEMICAL OVERPOTENTIAL AND CONCENTRATION OVERPOTENTIAL BASED ON CURVE OF ANODIC POLARIZATION IN HYDROGEN STORAGE ALLOY ELECTRODE |
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| 作者姓名： | Pan Hongge |
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| 作者单位： | Pan Hongge Department of Materials Science and Engineering，Zhejiang University，Hangzhou 310027，P. R. China |
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| 摘 要： | １ＩＮＴＲＯＤＵＣＴＩＯＮＭｅｔａｌｈｙｄｒｉｄｅｓｈａｖｅｂｅｅｎｕｓｅｄａｓｎｅｇａｔｉｖｅｅｌｅｃｔｒｏｄｅｓｏｆｎｉｃｋｅｌ／ｍｅｔａｌｈｙｄｒｉｄｅｂａｔｅｒｉｅｓｉｎｐｌａｃｅｏｆｃａｄｍｉｕｍ，ｂｅｃａｕｓｅｏｆｔｈｅｉｒｈｉｇｈｅｎｅ...
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CALCULATION OF ELECTROCHEMICAL OVERPOTENTIAL AND CONCENTRATION OVERPOTENTIAL BASED ON CURVE OF ANODIC POLARIZATION IN HYDROGEN STORAGE ALLOY ELECTRODE |
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| Pan Hongge.CALCULATION OF ELECTROCHEMICAL OVERPOTENTIAL AND CONCENTRATION OVERPOTENTIAL BASED ON CURVE OF ANODIC POLARIZATION IN HYDROGEN STORAGE ALLOY ELECTRODE[J].Transactions of Nonferrous Metals Society of China,1999,9(2). |
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| Authors: | Pan Hongge |
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| Abstract: | It was investigated in detail how to calculate the electrochemical polarization overpotential Ve and concentration polarization overpotential Vc based on anodic polarization curve in hydrogen storage alloys electrode. The results show that the experimental anodic polarization curve should be divided into three regions to discuss according to discharge current density Jd, namely, JdJf. In different regions, the calculation for Ve and Vc should use different formulas. When discharge current density Jd is smaller than Jp, the traditional equation used to calculate the electrochemical overpotential can't be used, when Jd is between Jp and Jf, both equations used to calculate the electrochemical overpotential and concentration overpotential can be used, and when Jd is larger than Jf, because there exists absorption and adsorption of hydrogen, the traditional equation used to calculate concentration overpotential can't be used in the system of hydride electrodes. |
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| Keywords: | electrochemical overpotentialconcentration overpotentialanodic polarizationhydrogen storage alloy |
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