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文摘
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暂态电化学分析技术由于可以提供与时间相关的电极过程动力学信息,在电化学研究中应用广泛。本文着重介绍了在正弦电流/电压激励下电化学系统的时频响应特性,其非线性频响行为的谱学表达、数值模拟方法以及实验表征方法,综述了非线性谱学分析技术在电化学研究中的应用。文中指出基于反应机理的谱学模拟与实验表征结果的对比是当前开展电化学非线性谱学研究的主要模式,总结出其在实验测量中交流振幅的选取原则,并在最后提出电化学系统的非线性主要源于反应动力学,非线性谱学分析因此在电化学反应的机理研究以及电化学系统诊断的许多方面独具优势。 |
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其他语种文摘
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Transient electrochemical technologies have been widely applied in electrochemistry for providing time dependent information of the electrode kinetics. This review aims to show the time-frequency response behavior of an electrochemical system under periodical sine current/voltage excitations. Manifestations, numerical simulation scheme and experimental characterization methods of the nonlinear frequency response spectroscopy as well as its application in electrochemistry are addressed as the key issues. It is suggested that comparative studies between simulation and experimental data is the main way to utilize the nonlinear spectroscopy. Regulations to select current/voltage amplitude are concluded from its experimental characterization. Furthermore, it is indicated that nonlinearity of the electrochemical system arises from the electrode kinetics, which enables the nonlinear spectroscopy to own its advantages in the mechanism study and some aspects of the electrochemical system diagnosis. |
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来源
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化学进展
,2017,29(2/3):210-215 【核心库】
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DOI
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10.7536/pc161008
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关键词
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非线性频率响应分析
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总谐波失真谱
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非线性电化学阻抗谱
;
燃料电池
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地址
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大连理工大学化工学院, 大连, 116023
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-281X |
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学科
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化学 |
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基金
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国家自然科学基金项目
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辽宁省教育厅科学研究一般项目
;
辽宁省自然科学基金
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文献收藏号
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CSCD:6049635
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