Introduction to EIS - NPTEL Videos in Youtube

Please use the following links to access the videos in youtube. These were recorded under the auspices of NPTEL


    Introduction

  1. Introduction to Electrochemical impedance Spectroscopy
  2. Detailed Syllabus
  3. Electrochemistry, double layer, 3 electrode systems, supporting electrolyte
  4. Rate constant, concept of impedance, Z of electrical elements, differential impedance
  5. Time domain results
  6. Graphical representation of data (Complex plane, Bode)
  7. Introduction to other techniques
  8. Assignment 01

    9. Experimental Aspects

  9. Type of analyzers, single and multi sine
  10. FFT details, frequency range and resolution, cross correlation
  11. Multi sine, odd harmonic, non-harmonics, crest factor, spectral leakage
  12. Windowing
  13. Assignment 02

    14. Kramer Kronig Transform

  14. Introduction to KKT
  15. Linearity, causality, stability, impedance vs. admittance, measurement model
  16. Linear KKT illustration
  17. Assignment 03

    18. Equivalent Electrical Circuit Analysis

  18. Introduction to EEC, Choice of circuits, confidence intervals, AIC
  19. EEC fitting, initial values, distinguishability
  20. Zero/pole representation, Rt and Rp
  21. Maxwell, Voigt, Ladder circuits, choice of initial values illustrated
  22. Assignment 04

    23. Mechanistic Analysis of Simple Electron Transer Reaction

  23. Simple electron transfer reaction
  24. Two step reaction with an intermediate (1 of 3)
  25. Two step reaction with an intermediate (2 of 3)
  26. Two step reaction with an intermediate (3 of 3)

    27. Reactions with Negative Resistance

  27. E-EAR reaction, negative resistance (1 of 2)
  28. E-EAR reaction, negative resistance (2 of 2)
  29. Three step reaction with two adsorbed intermediates

    30. Challenges in RMA

  30. Catalytic mechanism
  31. Examples with Frumkin or Temkin isotherms
  32. Challenges in RMA
  33. Patterns reported in experiments

    34. Warburg Impedance

  34. Warburg Part (1 of 3)
  35. Warburg Part (2 of 3)
  36. Warburg Part (3 of 3)
  37. Bounded Warburg

    38. Porous Electrodes

  38. Constant Phase Element
  39. Porous Electrodes

    40. Point Defect Model

  40. Films and Point Defect Model
  41. Point Defect Model
  42. Applications of PDM

    43. Nonlinear EIS

  43. NLEIS - Introduction and mathematical background
  44. Electron Transfer reaction
  45. Two step reaction
  46. Two step reaction (continued)
  47. Rt and Rp estimation
  48. Galvanostatic simulations

    49. Detection of Nonlinearities and Instabilities

  49. Instabilities
  50. Solution resistance effects
  51. Detection on nonlinearities using KKT
  52. Frumkin and Temkin isotherms
  53. NLEIS Experimental aspects. FFT, PSD, THD
  54. Application - other techniques HA, EFM

    55. Answers to the Assignment Questions

  55. Answers to Assignments 1-4
  56. Answers to Assignments 5-8