| Surface structure and catalytic activity of electrodeposited Ni-Fe-Co-Mo alloy electrode by partially leaching Mo and Fe |
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| 作者姓名： | 罗北平 龚竹青 任碧野 杨余芳 陈梦君 |
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| 作者单位： | School of Metallurgical Science and Engineering Central South University Changsha 410083 China Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang 414000 China，Research Institute of Materials Science South China University of Technology Guangzhou 51 0640 China，Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang 414000 China，School of Metallurgical Science and Engineering Central South University Changsha 410083 China，School of Metallurgical Science and Engineering Central South University Changsha 410083 China |
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| 摘 要： | 1 Introduction The chlorine alkaline industry and the production of hydrogen by electrolyzing water have disadvantages of high cost and energy consumption, so it is especially important to study and develop a high catalytic activity and good stability el…
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| 关 键 词： | Ni-Fe-Mo-Co 催化活性 表面结构 合金电极 电镀 |
| 收稿时间： | 2005-12-09 |
| 修稿时间： | 2006-04-10 |
Surface structure and catalytic activity of electrodeposited Ni-Fe-Co-Mo alloy electrode by partially leaching Mo and Fe |
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| LUO Bei-ping,GONG Zhu-qing,REN Bi-ye,YANG Yu-fang,CHEN Meng-jun.Surface structure and catalytic activity of electrodeposited Ni-Fe-Co-Mo alloy electrode by partially leaching Mo and Fe[J].Transactions of Nonferrous Metals Society of China,2006,16(3):623-628. |
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| Authors: | LUO Bei-ping GONG Zhu-qing REN Bi-ye YANG Yu-fang CHEN Meng-jun |
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| Affiliation: | 1. Materials Processing Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;2. Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;3. Mechanical Metallurgy Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;1. School of Defense Science, Chung Cheng Institute of Technology, National Defense University, Taoyuan, Taiwan;2. Department of Power Vehicle and Systems Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan, Taiwan;3. Department of Chemistry and Material Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan, Taiwan;4. Department of Marketing Management, Takming University of Science and Technology, Taipei, Taiwan;1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;2. School of Materials Science and Engineering, East China JiaoTong University, Nanchang, 330013, China;1. Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea;2. Department of Chemical Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Republic of Korea;3. Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, P.O. Box 49, DK-4000 Roskilde, Denmark;4. Electrochemical Energy Laboratory, Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, India;5. Department of Hydrogen and Fuel Cell Technology, Hanyang University, Seoul 133-791, Republic of Korea |
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| Abstract: | Ni-Fe-Mo-Co alloy electrode was prepared in a citrate solution by electrodeposition, and then Mo and Fe were partially leached out from the electrode in 30% KOH solution. The unique surface micromorphology of a hive-like structure was obtained with an average pore size of about 50 nm. The electrode has a very large real surface area and a stable structure. The effects of sodium molybdate concentration on the composition, surface morphology, and structure of electrodes were analyzed by EDS, SEM and XRD. The polarization curves of the different electrodes show that the catalytic activity of electrodes is strongly correlated with the mole fraction of alloy elements (Ni, Fe, Mo, Co), and the addition of cobalt element to Ni-Fe-Mo alloy improves the catalytic activity. The Ni35.63Fe24.67Mo23.52Co16.18 electrode has the best activity for hydrogen evolution reaction(HER), with an over-potential of 66.2 mV, in 30% KOH at 80 °C and 200 mA/cm2. The alloy maintains its good catalytic activity for HER during continuous or intermittent electrolysis. Its electrochemical activity and catalytic stability are much higher than the other iron-group with Mo alloy electrodes. |
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| Keywords: | Ni-Fe-Mo-Co alloy catalytic activity surface structure hydrogen evolution reaction electrode electrodeposition |
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