May, Designing the Solution for Electrochemistry І І І

Transcription

1 EIS Software Package Electrochemical Impedance Spectroscopy May, 2015 Designing the Solution for Electrochemistry Potentiostat/Galvanostat І Battery Cycler І Fuel Cell Test Station І І І

2 EIS Software Electrochemical Impedance Spectroscopy(EIS) can be done with following two options - EIS software package : Supports an internal potentiostat/galvanostat or an external booster(zb series). 14 EIS techniques available Technique menu or sequence editor available Supplied with the system as standard. - FRA function : Supports an external electronic load or an external potentiostat/galvanostat. 6 EIS techniques in sequence editor available Can be used with WonATech fuel cell test system EIS S/W includes control functions in sequence editor and technique menu. FRA S/W includes control functions in sequence editor. EIS software package is for SP2(5),MP2(5), and BP2 series. EISe software package is for SP1, MP1, and PP1e.

3 EIS Software EIS software package consists of - Potentiostatic EIS (PEIS) - Galvanostatic EIS (PEIS) - Open circuit potential EIS (OCPEIS) - Psuedo Galvanostatic EIS - Potentiodynamic PEIS - Galvanodynamic PEIS - Potentiostatic HFR - Galvanostatic HFR - Potentiodynamic HFR - Galvanodynamic HFR - Multisine PEIS - Multisine GEIS - Intermittent GEIS - Intermittent PEIS FRA function consists of -PEIS -GEIS - Potentiostatic HFR - Galvanostatic HFR - Pstatic Multisine - Gstatic Multisine FRA function needs a FRA cable.

4 Strong Points in ZIVE EIS (Software) Automatic current ranging, voltage ranging during EIS measurement Automatic filter/control speed changing per frequency Cycling measurement available Various techniques (14 techniques) Sequence testing with other technique Two realtime plot selectable - Lissajous(I vs. E) real-time display at each frequency - sine wave real time plot (I & E) Simultaneous plots for 3 EIS graph formats -Nyquist -Bode Z - Bode phase Multichannel EIS real time plot available Intermittent Techniques are available Potentiodynamic/Galvanodynamic available Synchronized measurement of auxiliary signals (Temperature, AuxV1, AuxV2, AuxV3) Various EIS graph format selectable Real time parameter monitoring Independent EIS data analysis software (ZMAN TM )

5 Measurement Time Single sine mode (PEIS) 10kHz to 10mHz (6 point per decade) B company product: 20min 38sec ZIVELAB fast mode: 10min 19sec ZIVELAB normal mode: 10min 19sec ZIVELAB stable mode: 10min 38sec Fast, normal, and stable mode will be effective for high frequency EIS measurement.

6 Measurement Time Per Mode Single sine mode (PEIS) per mode 1MHz to 10Hz (30 points per decade: total 151 points) ZIVELAB fast mode: 1min 41sec ZIVELAB normal mode: 2min 04sec ZIVELAB stable mode: 5min 26sec

7 Comparison Between Mode

8 Measurement Time Multi sine mode (PEIS) 10kHz to 10mHz B company: <1Hz multisine 5min 22sec >100Hz single sine <100Hz multisine (10 point/decade) ZIVELAB fast mode: 3min 32sec ZIVELAB normal mode: 3min 38sec ZIVELAB stable mode: 3min 41sec >1Hz single sine <1Hz multisine (10 point/decade) ZIVELAB fast mode: 3min 42sec ZIVELAB normal mode: 3min 54sec ZIVELAB stable mode: 3min 57sec

9 PC Independent Operation Using 350,000 data points internal memory and DSP/FPGA, system works even if PC connection failure When PC recovered, stored data will transfer to PC automatically without stopping experiment Later X

10 Sequence Editor Control Tree Cut-Off Not availabe in EIS step Complex or user defined test can be scheduled by using sequence editor.

11 EIS Control Functions in sequence editor Software package name EIS software package FRA function EIS GSTAT PSTAT OCP PSUEDO HFR G HFR P GSTAT MULTISINE PSTAT MULTISINE Yes Yes Yes Yes Yes Yes Yes Yes FRA GSTAT PSTAT HFR G HFR P PSTAT MULTISINE GSTAT MULTISINE Yes Yes Yes Yes Yes Yes

12 EIS Techniques EIS measurement speed selection (Fast, Normal, Stable) Log Z, phase vs time per measurement speed settng Data averaging number setting depending di on frequency >100Hz <100Hz Cycling number setting (Initial frequency-> high frequency->low frequency->high frequency -> Frequency scanning mode selection (Linear /Log) Frequency range setting (Initial->Middle->Final) Single sine EIS & Multisine EIS combo mode Data density setting per decade

13 EIS Techniques Potentiostatic EIS Potentiostatic EIS is generally used for investigating electrochemical interface s characteristics at fixed potential with small sine wave potential excitation. User can set bias potential vs. Eref or Eoc.

14 EIS Techniques Galvanostatic EIS Galvanostatic EIS is used for low impedance sample test (e.g. high capacity battery, fuel cell, super capacitor, etc). This EIS technique applies fixed current with small sine wave current excitation.

15 EIS Techniques OCP EIS OCP EIS is used for corrosion sample which Eoc is changed following time. This EIS technique will measure Eoc before EIS measurement per each frequency and applies Eoc potential as bias potential with small sine wave potential excitation. User can set Eoc measurement time per each frequency.

16 EIS Techniques Pseudo Galvanostatic EIS Pseudo galvanostatic ti EIS is used for low impedance sample but the impedance is changed higher for low frequency range. This EIS technique applies fixed current with small sine wave current excitation till it reaches the limit potential amplitude. From this frequency current amplitude will be decreased not to over limit potential amplitude. User can set limit potential amplitude.

17 EIS Techniques Potentiodynamic PEIS Potentiodynamic PEIS is series potentiostatic EIS measurement using staircase bias potential change. Vdc and Idc at Bias potential step will be also recorded d as data. By using ZMAN TM software, 3D plot, Mottschottky analysis and semiconductor CV analysis are available.

18 EIS Techniques Galvanodynamic GEIS Galvanodynamic GEIS is a series of galvanostatic EIS measurement using staircase bias current change. Vdc and Idc at bias potential step will be also recorded d as data. By using ZMAN TM software, 3D plot, Mottschottky analysis and semiconductor CV analysis are available. aaabe

19 EIS Techniques Intermittent PEIS Instrument applies bias current(c-rate, rate, Power, Load, CC-CV, CP-CV, CL-CV, Ipulse, etc.) or REST until it reaches intermittent limit condition and do PEIS. This will be done repeatedly by the end condition. Main purpose of this technique is to measure PEIS per constant interval (for example, per constant charging capacity, per rest time etc.) Vdc and Idc at bias potential step will be also recorded as data. By using ZMAN TM software, 3D plot analysis are available.

20 EIS Techniques Intermittent GEIS Instrument applies bias current(c-rate, rate Power, Load, CC-CV, CP-CV, CL-CV, Ipulse, etc.) or REST until it reaches intermittent limit condition and do GEIS. This will be done repeatedly by the end condition. Main purpose of this technique is to measure GEIS per constant interval (for example, per constant charging capacity, per rest time, etc.) Vdc and Idc at bias potential step will be also recorded as data. By using ZMAN TM software, 3D plot analysis are available.

21 EIS Techniques Potentiostatic HFR Potentiostatic HFR is for monitoring impedance variation at fixed frequency. User can set bias potential ti vs. Eref or Eoc.

22 EIS Techniques Galvanostatic HFR Galvanostatic HFR is for monitoring the impedance variation at fixed frequency.

23 EIS Techniques Potentiodynamic HFR Impedance measurement will be done under fixed frequency potential sine wave and bias potential will be changed by staircase from initial potential to final potential. User can set bias potential vs. Eref or Eoc. Vdc and Idc at bias potential step will be also recorded as data. Idc, Z, Y vs Vdc plot

24 EIS Techniques Galvanodynamic HFR Impedance measurement will be done under fixed frequency current sine wave and bias current will be changed per every data point until bias current meets final current value. Vdc and Idc at bias current step will be also recorded as data.

25 EIS Techniques (Multisine) Multisine reduces impedance measurement time. Single sine + Multisine combo mode available. Multisine waveform Multisine progress display Multisine Real time plot

26 Single Sine /Multisine

27 EIS techniques (Multisine) Potentiostatic Multisine This technique e applies potential sine wave adding to bias potential and measures impedance by scanning frequency from SS start frequency to MS start frequency and applies complex potential wave and measures impedance by FFT analysis per each two decades from MS start frequency to final frequency. You can select potential value vs. reference potential or open circuit potential and amplitude.

28 EIS techniques (Multisine) Galvanostatic Multisine This technique applies current sine wave adding to bias current and measures impedance by scanning frequency from SS start frequency to MS start frequency and applies multiple l simultaneous current sine wave excitation and measures impedance by FFT analysis per each two decades from MS start frequency to final frequency. Amplitude value is rms value.

29 Control Types in Sequence Editor EIS Mode (EIS software) PEIS GEIS OCPEIS Psuedo GEIS Gstatic HFR Pstatic HFR G Multisine P Multisine FRA Mode (FRA function for external electronic load or external potentiostat) PEIS GEIS Gstatic HFR Pstatic HFR G Multisine P Multisine

30 FRA Function FRA function is to control external electronic load or potentiostat for EIS measurement. FRA potentiostatic EIS FRA galvanostatic EIS FRA potentiostatic HFR FRA galvanostatic HFR G Multisine PM Multisine li i

31 Advanced Parameter Setting Cell Information Safety Setting Mass(g) is used to calculate specific capacity. Capacity is used to calculate C-rate. FRA range setting for external electronic load etc For safety operation, safety limit can be defined. Current, Voltage, Power, Temperature, Aux1voltage

32 Advanced Setting for Each Step User can change Average setting depending on frequency range for instable sample measurement. This setting will measure EIS several times per frequency and average EIS data following the above setting

33 Batch File Function Batch file is for sequential operation with sequence file and/or technique file. Cycling(looping) available Editing available for each sequence file or technique file This function can do DC experiment and EIS experiment sequentially

34 Control Menu

35 Virtual Control Panel Single channel control/status view Multichannel control/status view

36 Start Experiment Single channel menu Multichannel menu Automatic file name available User defined folder saving available User input parameters: Active area to calculate current density

37 Real Time Graph Setting axis setting for sequence data axis setting for technique data

38 Real Time Graph for Multichannel Single channel operation Multichannel operation

39 Simple Monitor For EIS test For DC test Color Grey: idle Violet: charging Blue: discharging Green: EIS measurement Yellow: calibration Red: error (safety limit etc.) Highest layer location

40 Data Files EIS data only : File(.seo)- EIS graph DC data and EIS data : File(.sde)- DC/EIS/Cycle graph ZMAN TM software reads.seo and.sde file for EIS data analysis.

41 Data Converting (Binary to Ascii or Excel format) Multiple data files conversion Data conversion from graph Conversion from report

42 Advanced Graph Setting

43 Graph Option

44 EIS Graph Shortcut Shortcut icon

45 Nyquist Plot Cursor display: Zreal, -Zimg, frequency Zoom up Excel convert

46 Bode Plot Cancellation of uploaded data file Cursor display: frequency, Z or phase Zoom up Data hidden function

47 Admittance Plot Nyquist Admittance (Yim vs Yre) Bode Admittance ( Y, Yph vs logf)

48 Rs,Cs vs Logf Plot ZMAN TM eis data analysis software shortcut Copy to clipboard Experiment parameter loading

49 Rs,Cs,Rp,Cp vs Vdc Plot Data editor shortcut

50 Idc,log Z,log Y vs Vdc Plot

51 Black Nichols Plot Black impedance ( log Z vs Zph) Black admittance (Log Y vs Yph)

52 EIS Graph Parameters X axis: Log frequency(freq),z real (Zre), Y real(yre), Zphase (Zph), Yphase(Yph), Rs(R-C), Cs(R-C), Rp(R C), Cp(R C), Rs(R-L), Ls(R-L), Q(R-L), time, voltage(vdc), current(idc), temperature, auxiliary voltage(aux1,2,3), frequency Y axis: Zreal(Zre), -Zimaginary(-Zim), Z, Zphase(Zph), Yreal(Y ), Yimaginary(Yimg), Y absolute value( Y ), Yphase (Yph), LogZ, LogY, Rs(R-C), Cs(R-C), C) Rp(R C), Cp(R C), Rs(R-L), Ls(R-L), Q(R-L), time, voltage(vdc), current(idc), temperature, auxiliary voltage(aux1,2,3)

53 Report/Data Editing EIS data report Filtering Data delete Editing

54 ZMAN TM Software Refer to ZMAN TM presentation Model simulation and fitting 2D- and 3D-Bode- and Nyquist plots Automatic equivalent circuit model search function Project concept to handle multiple EIS data analysis Parameter plot from fitted elements value Compatible with data format from Zahner, Gamry, Ametek etc. (License code is needed) Various weighting algorithm Model library and user model KK plot Batch fitting for project data Impedance parameter simulation Interpolate bad data Black-Nichols plot 3D graph setting option Improved model editor Application model library for automatic searching Parameter simulation of model Genetic algorithm option for initial guessing Automatic initial guessing Trace movie function on fitting Free for ZIVE s data format(*.seo, *.wis) analysis (No license code required) Circle fitting Data editing available (insert, delete, edit) Add/subtract element parameters C vs. voltage graph Impedance,Z in polar, admittance, Y in Polar, modulus, M in polar, dielectric constant, E in polar. data display Empty cell capacitance calculation Data replacement by formula function Model finding result automatic sorting by Chi square value R, C R,L R, Q preview & graphic ZHIT function Mott-Schottky analysis Donor density vs. Vfb graph

55 ZMAN TM Software

56 Thank You!