| CaCl_2-NaCl熔盐中Fe~(3+)电化学行为的循环伏安分析 |
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| 作者姓名： | 胡宏波 高运明 秦庆伟 李光强 |
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| 作者单位： | 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室;武汉科技大学钢铁冶金新工艺湖北省重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(51174148)；国家自然科学基金委员会-辽宁省人民政府联合基金资助项目(U1508214). |
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| 摘 要： | 利用ZrO_2(Y_2O_3)固体电解质管集成构建Pt,O_2(air)|ZrO_2作为参比电极的电化学电池,采用循环伏安法在1273、1323、1373、1393K温度下对溶解0.5%Fe2O3的CaCl2-NaCl共晶熔盐中Fe~(3+)的电化学行为进行研究,分析了Fe~(3+)在Pt电极上的还原机理,并计算了电极反应交换电子数、Fe~(3+)扩散系数与Fe~(3+)扩散活化能等电化学参数。结果表明,在实验温度范围内,熔盐中Fe~(3+)在Pt电极上还原为Fe的反应是一步还原并受扩散控制的可逆过程;随着温度升高,Fe~(3+)扩散系数增大,Fe~(3+)扩散活化能为97.91kJ·mol-1。另外,本实验测得的Fe~(3+)扩散系数与文献值基本相符,因此,可以认为利用该电化学电池装置研究溶解有Fe2O3的CaCl2-NaCl溶盐的电化学行为是可行的。
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| 关 键 词： | Fe2O3 Fe3+ CaCl2-NaCl熔盐 电化学行为 循环伏安 ZrO2(Y2O3) 扩散系数 |
| 收稿时间： | 2018/4/2 0:00:00 |
Investigation into electrochemical behavior of Fe3+ in CaCl2-NaCl molten salt by cyclic voltammetry method |
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| Authors: | Hu Hongbo Gao Yunming Qin Qingwei and Li Guangqiang |
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| Institution: | 1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2.Hubei Provincial Key Laboratory for New Processes of Iron-making and Steel-making, Wuhan University of Science and Technology, Wuhan 430081, China,1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2.Hubei Provincial Key Laboratory for New Processes of Iron-making and Steel-making, Wuhan University of Science and Technology, Wuhan 430081, China,1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2.Hubei Provincial Key Laboratory for New Processes of Iron-making and Steel-making, Wuhan University of Science and Technology, Wuhan 430081, China and 1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2.Hubei Provincial Key Laboratory for New Processes of Iron-making and Steel-making, Wuhan University of Science and Technology, Wuhan 430081, China |
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| Abstract: | |
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| Keywords: | Fe2O3 Fe3+ CaCl2-NaCl molten salt electrochemical behavior cyclic voltammetry ZrO2(Y2O3) diffusion coefficient |
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