EIS Software Package EIS Software Package EIS Software Package EIS Software Package Electrochemical Impedance SpectroscopyElectrochemical Impedance Spectroscopy

May, 2015

Designing the Solution for ElectrochemistryPotentiostat/Galvanostat І Battery Cycler І Fuel Cell Test StationPotentiostat/Galvanostat І Battery Cycler І Fuel Cell Test Station+82-2-578-6516 І sales@wonatech.comwww.wonatech.com І www.zivelab.com І www.fctest.com

EIS Software

• Electrochemical Impedance Spectroscopy(EIS) can be done with following two options

- EIS software package :EIS software package :

Supports an internal potentiostat/galvanostat or an external booster(ZB series).

14 EIS techniques available

h d l blTechnique menu or sequence editor availableSupplied with the system as standard.

- FRA function :

S l l i l d l i / lSupports 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. EIS software package is for SP2(5),MP2(5), and BP2 series. EISe software package is for SP1, MP1, and PP1e.

EIS Software

• EIS software package consists of

- Potentiostatic EIS (PEIS)

• FRA function consists of

- PEIS

- Galvanostatic EIS (PEIS)

- Open circuit potential EIS (OCPEIS)

- Psuedo Galvanostatic EIS

- GEIS

- Potentiostatic HFR

- Galvanostatic HFR

- Potentiodynamic PEIS

- Galvanodynamic PEIS

- Potentiostatic HFR

- Pstatic Multisine

- Gstatic Multisine

Potentiostatic HFR

- Galvanostatic HFR

- Potentiodynamic HFR

• FRA function needs a FRA cable.

- Galvanodynamic HFR

- Multisine PEIS

- Multisine GEIS

- Intermittent GEIS

- Intermittent PEIS

Strong Points in ZIVE EIS (Software)

Automatic current ranging, voltage ranging during EIS measurement

Automatic filter/control speed changing per

Two realtime plot selectable- Lissajous(I vs. E) real-time display at each frequency

- sine wave real time plot (I & E)Automatic filter/control speed changing per frequency

Cycling measurement available

sine wave real time plot (I & E)

Simultaneous plots for 3 EIS graph formats- Nyquist- Bode |Z|

Bode phaseVarious techniques (14 techniques)

Sequence testing with other technique

- Bode phase

Multichannel EIS real time plot availableIntermittent 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 (ZMANTM)

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.

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

Comparison Between Mode

Measurement Time

• Multi sine mode (PEIS)

10kHz to 10mHz

“B” company: <1Hz multisine 5min 22sec

>100Hz single sine>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

PC Independent Operation

• Using 350,000 data points internal memory and DSP/FPGA, system works even if PC connection failureeven if PC connection failure

• When PC recovered, stored data will transfer to PC automatically without Xstopping experiment XLater …

Sequence Editor

Control

•Tree

•Not availabe in EIS stepCut-Off

•Not availabe in EIS step

Complex or user defined test can be scheduled by using sequence editor.

EIS Control Functions in sequence editor

Software package name EIS software package FRA function

GSTAT Yes

PSTAT Yes

OCP Yes

PSUEDO YesEIS

HFR G Yes

HFR P Yes

GSTAT MULTISINE YesGSTAT MULTISINE Yes

PSTAT MULTISINE Yes

GSTAT Yes

PSTAT Y

FRA

PSTAT Yes

HFR G Yes

HFR P YesPSTAT MULTISINE YesPSTAT MULTISINE YesGSTAT MULTISINE Yes

EIS Techniques

• EIS measurement speed selection (Fast, Normal, Stable)

Log|Z|, phase vs time per measurement speed settng

D t i b tti d di f• Data averaging number setting depending on frequency

• Cycling number setting (Initial frequency > high frequency >low frequency >high 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• Single sine EIS & Multisine EIS combo mode

• Data density setting per decade

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.

EIS Techniques

Galvanostatic EIS

Galvanostatic EIS is used for low impedance sample test (e.g. high capacity battery, fuel cell, super capacito etc)capacitor, etc).

This EIS technique applies fixed current with small sine wave current excitation.

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.p

User can set Eoc measurement time per each frequency.

EIS Techniques

Pseudo Galvanostatic EIS

P d l t ti EIS i d f lPseudo galvanostatic EIS is used for low impedance sample but the impedance is changed higher for low frequency range.

This EIS technique applies fixed current withThis 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.not to over limit potential amplitude.

User can set limit potential amplitude.

EIS Techniques

Potentiodynamic PEIS

• Potentiodynamic PEIS is series potentiostaticPotentiodynamic PEIS is series potentiostatic EIS measurement using staircase bias potential change.

• Vdc and Idc at Bias potential step will be also d d d trecorded as data.

• By using ZMANTM software, 3D plot, Mottschottky analysis and semiconductor CV analysis are available.

EIS Techniques

Galvanodynamic GEIS

• Galvanodynamic GEIS is a series of galvanostaticGalvanodynamic GEIS is a series of galvanostatic EIS measurement using staircase bias current change.

• Vdc and Idc at bias potential step will be also d d d trecorded as data.

• By using ZMANTM software, 3D plot, Mottschottky analysis and semiconductor CV analysis are available.a a ab e

EIS Techniques

Intermittent PEIS

• Instrument applies bias current(C-rate, Power,Instrument applies bias current(C rate, Power, Load, CC-CV, CP-CV, CL-CV, Ipulse, etc.) or REST until it reaches intermittent limit condition and doPEIS. This will be done repeatedly by the endcondition.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 ZMANTM software, 3D plot analysis are il blavailable.

EIS Techniques

Intermittent GEIS

• Instrument applies bias current(C rate Power• Instrument applies bias current(C-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 conditioncondition.

• 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 ZMANTM software, 3D plot analysis are available.

EIS Techniques

Potentiostatic HFR

Potentiostatic HFR is for monitoring impedance variation at fixed frequency.

U t bi t ti l E f EUser can set bias potential vs. Eref or Eoc.

EIS Techniques

Galvanostatic HFR

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

EIS Techniques

Potentiodynamic HFRImpedance measurement will be done under fixed frequency potential sine wave and bias potential will befrequency 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

EIS Techniques

Galvanodynamic HFR

Impedance measurement will be done under fixedImpedance 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.

EIS Techniques (Multisine)

Multisine reduces impedance measurement time.

Single sine + Multisine combo mode available.

Multisine waveform

Multisine progress display

Multisine Real time plot

Single Sine /Multisine

EIS techniques (Multisine)

This techniq e applies potential sine a e

Potentiostatic Multisine

This technique 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 andapplies 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 circuitvalue vs. reference potential or open circuit potential and amplitude.

EIS techniques (Multisine)

Thi t h i li t i

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

li lti l i lt t iapplies multiple simultaneous current sine wave excitation and measures impedance by FFT analysis per each two decades from MS start frequency to final frequency. Amplitude

l i lvalue is rms value.

Control Types in Sequence Editor

EIS Mode (EIS software) FRA ModeEIS Mode (EIS software)

PEISGEIS

FRA Mode(FRA function for external electronic load or external potentiostat)

G SOCPEISPsuedo GEISGstatic HFR

PEISGEISGstatic HFR

Pstatic HFRG MultisineP Multisine

Gstatic HFRPstatic HFRG MultisineP Multisine

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

P M l i i P Multisine

Advanced Parameter Setting

Safety SettingCell Information y g

Mass(g) is used to calculate specific capacity.

Capacity is used to calculate C-rate.For safety operation, safety limit can be defined.

Current Voltage Power Temperature Aux1voltageCapacity is used to calculate C rate.

FRA range setting for external electronic load etc

Current, Voltage, Power, Temperature, Aux1voltage

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

Batch File Function

Batch file is for sequential operation with sequence file and/or technique file.

Cycling(looping) availableCycling(looping) available

Editing available for each sequence file or technique file

This function can do DC experiment and EIS experiment sequentially

Control Menu

Virtual Control Panel

Single channel control/Status view

Multichannel control/Status view

Start Experiment

Single channel menu Multichannel menu

Automatic file name available

User defined folder saving available

User input parameters: Active area to calculate current densityUser input parameters: Active area to calculate current density

Real Time Graph Setting

axis setting for sequence data axis setting for technique data

Real Time Graph for Multichannel

Single channel operation Multichannel operation

Simple Monitor

Highest layer locationColor

• For DC test• For EIS test

Highest layer location• Grey: idle

• Violet: charging

• Blue: discharging• Blue: discharging

• Green: EIS measurement

• Yellow: calibration

• Red: error (safety limit etc.)

Data Files

EIS data only : File(.seo)- EIS graph

DC data and EIS data : File(.sde)- DC/EIS/Cycle graph

ZMANTM software reads .seo and .sde file for EIS data analysis.

Data Converting (Binary to Ascii or Excel format)

Multiple data files conversionMultiple data files conversion

Data conversion from graph

Conversion from report

Advanced Graph Setting

Graph Option

EIS Graph Shortcut

Shortcut iconShortcut icon

Nyquist Plot

Cursor display: Zreal, -Zimg, frequency

Zoom up

Excel convert

Bode Plot

Cancellation of uploaded data file

Cursor display: frequency, |Z| or phase

•Zoom up

Data hidden function

Admittance Plot

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

Rs,Cs vs Logf Plot

ZMANTM eis data analysis software shortcut

Copy to clipboard

ZMAN eis data analysis software shortcut

Experiment parameter

loading

Rs,Cs,Rp,Cp vs Vdc Plot

Data editor shortcut

Idc,log|Z|,log|Y|vs Vdc Plot

Black Nichols Plot

Black impedance ( log|Z| vs Zph) Black admittance (Log|Y| vs Yph)

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), ( ), ( ), p( | ), p( | ), ( ), ( ), Q( ), , g ( ),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) Rp(R|C)Y absolute value(|Y|), Yphase (Yph), LogZ, LogY, 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)

Report/Data Editing

EIS data report

Filtering

EIS data report

Data deleteEditing

ZMANTM SoftwareRefer to ZMANTM presentation

• Model simulation and fitting

• 2D- and 3D-Bode- and Nyquist plots

l d l h f

• Parameter simulation of model

• Genetic algorithm option for initial guessing

• Automatic initial guessing• 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,

• Automatic initial guessing

• Trace movie function on fitting

• Free for ZIVE’s data format(*.seo, *.wis) analysis (No license code required)

• Circle fittingCo pat ble w t data o at o a e , Ga y, Ametek etc. (License code is needed)

• Various weighting algorithm

• Model library and user model

KK plot

• Data editing available (insert, delete, edit)

• Add/subtract element parameters

• C vs. voltage graph

I d Z i l d itt Y i P l d l M i l • KK plot

• Batch fitting for project data

• Impedance parameter simulation

• Interpolate bad data

• 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

• Black-Nichols plot

• 3D graph setting option

• Improved model editor

• Model finding result automatic sorting by Chi square value

• R, C R,L R, Q preview & graphic

• ZHIT function

• Mott-Schottky analysis• Application model library for automatic searching • Mott-Schottky analysis

• Donor density vs. Vfb graph

ZMANTM Software

Thank You !