第九章交流阻抗谱技术 ●Introduction o Basic elements in an electric circuit Nyquist and Bode plots Data analysis and software ●Examples
第九章 交流阻抗谱技术 Introduction Basic elements in an electric circuit Basic elements in an electric circuit Nyquist and Bode plots Nyquist and Bode plots Data analysis and software Examples
What should you know? ●阻抗谱的原理 ●如何看懂阻抗谱？ ●如何解析阻抗谱？（常用软件） ●阻抗谱的常见错误
What should you know? 阻抗谱的原理 如何看懂阻抗谱？ 如何解析阻抗谱？（常用软件） 阻抗谱的常见错误
Introduction Terminology: ● AC Impedance Spectroscopy (IS) ● Electrochemical Impedance Spectroscopy (EIS) ● Complex Impedance Spectroscopy(CIS) References: ● J.R.MacDonald,Impedance Spectroscopy,Chapel Hill,North Carolina,1987.(John-Wiley,2005?) ● 史美伦，交流阻抗谱原理及应用，国防工业出 版社，2001 曹楚南，张鉴清，电化学阻抗谱导论，科学出版 社，2002
Introduction Terminology: • AC Impedance Spectroscopy (IS) AC Impedance Spectroscopy (IS) • Electrochemical Impedance Spectroscopy (EIS) • Complex Impedance Spectroscopy (CIS) Complex Impedance Spectroscopy (CIS) References: • J.R. MacDonald, Impedance Spectroscopy, Chapel Hill N h C li 1987 (J h Hill, North Carolina, 1987. (John-Wil 2005?) Wiley, 2005?) • 史美伦，交流阻抗谱原理及应用，国防工业出 版社，2001. • 曹楚南, 张鉴清，电化学阻抗谱导论，科学出版 社，2002
Introduction ●暂态与稳态：This is a transient technique,but one that requires a general steady state condition. ●可测性质：can be used for determining both: Interfacial parameters(界面参数 a)reaction rates b)rate constants c)capacitance/charge storage abilities d)diffusion coefficients e)adsorption rate constants f)reaction mechanisms And aterial parameters(材料参数 a)conductivity b)dielectric constants c)bulk generation-recombination reaction rates d)charge mobilities e)film thickness f)equilibrium conc.of charged species g)presence of pores and cracks
Introduction 暂态与稳态: This is a transient technique, but one that requires a general steady state condition. 可测性质: can be used for determining both: Interfacial parameters ( Interfacial parameters (界面参数) a) reaction rates b) rate constants c) capacitance/charge storage abilities d) diffusion coefficients e) adsorption rate constants f) reaction mechanisms And Material parameters (材料参数) a) conductivity a) conductivity b) dielectric constants b) dielectric constants c) bulk generation-recombination reaction rates d) charge mobilities e) film thickness f) equilibrium conc. of charged species g) presence of pores and cracks
General concept -like other spectroscopy experiments,we apply an excitation to the system under study and observe its response (generally as a function of frequency) 一般 光吸收 恒压测量 厂留人 -in EIS,we apply a potential perturbation (usually a Sine wave) and observe the current response,which is a sine wave at the same frequency,but with a different amplitude and phase than the potential signal. Cell
General concept - like other spectroscopy experiments, we apply an excitation to the system under study and observe its response (generally as a f nction of freq enc ) a function of frequency) 一般 光吸收 恒压测量 - in EIS, we apply a potential perturbation (usually a Sine wave) and observe the current response which is a sine wave at the same 恒压测量 and observe the current response, which is a sine wave at the same frequency, but with a different amplitude and phase than the p g otential signal