EIS Software Package
Electrochemical Impedance Spectroscopy
May, 2015
Designing the Solution for Electrochemistry
Potentiostat/Galvanostat І Battery Cycler І Fuel Cell Test Station
+82-2-578-6516 І sales@wonatech.com
www.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 :
Supports an internal potentiostat/galvanostat or an external booster(ZB series).
14 EIS techniques available
Technique
h
menu or sequence editor
d
available
l bl
Supplied with the system as standard.
- FRA function :
S
Supports
an externall electronic
l
i load
l d or an externall potentiostat/galvanostat.
i
/ l
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.
EIS Software
• EIS software package consists of
• FRA function consists of
- Potentiostatic EIS (PEIS)
- PEIS
- Galvanostatic EIS (PEIS)
- GEIS
- Open circuit potential EIS (OCPEIS)
- Potentiostatic HFR
- Psuedo Galvanostatic EIS
- Galvanostatic HFR
- Potentiodynamic PEIS
- Pstatic Multisine
- Galvanodynamic PEIS
- Gstatic Multisine
- Potentiostatic HFR
- Galvanostatic HFR
- Potentiodynamic HFR
- Galvanodynamic HFR
- Multisine PEIS
- Multisine GEIS
- Intermittent GEIS
- Intermittent PEIS
• FRA function needs a FRA cable.
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
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)
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
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 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 failure
•
When PC recovered, stored data will
transfer to PC automatically without
stopping experiment
Later …
X
Sequence Editor
Control
•Tree
Cut-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
FRA
EIS software package
GSTAT
Yes
PSTAT
Yes
OCP
Yes
PSUEDO
Yes
HFR G
Yes
HFR P
Yes
GSTAT MULTISINE
Yes
PSTAT MULTISINE
Yes
FRA function
GSTAT
Yes
PSTAT
Y
Yes
HFR G
Yes
HFR P
PSTAT MULTISINE
GSTAT MULTISINE
Yes
Yes
Yes
EIS Techniques
• EIS measurement speed selection (Fast, Normal, Stable)
Log|Z|, phase vs time per measurement speed settng
• Data
D t averaging
i number
b setting
tti d
depending
di on frequency
f
>100Hz
<100Hz
• Cycling number setting (Initial frequency
frequency->
> high frequency
frequency->low
>low frequency
frequency->high
>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
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
Pseudo
P
d galvanostatic
l
t ti EIS iis used
d for
f low
l
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.
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 d as d
data.
t
• By using ZMANTM software, 3D plot, Mottschottky
analysis and semiconductor CV analysis are available.
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 d as d
data.
t
• By using ZMANTM software, 3D plot, Mottschottky
analysis and semiconductor CV analysis are
a a ab e
available.
EIS Techniques
Intermittent PEIS
• Instrument applies bias current(C-rate,
current(C 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 ZMANTM software, 3D plot analysis are
available.
il bl
EIS Techniques
Intermittent GEIS
• Instrument applies bias current(C
current(C-rate,
rate Power
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.
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 ZMANTM software, 3D plot analysis are
available.
EIS Techniques
Potentiostatic HFR
Potentiostatic HFR is for monitoring impedance variation
at fixed frequency.
U
User
can sett bi
bias potential
t ti l vs. Eref
E f or Eoc.
E
EIS Techniques
Galvanostatic HFR
Galvanostatic HFR is for monitoring the impedance
variation at fixed frequency.
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
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.
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)
Potentiostatic Multisine
This technique
techniq e applies potential sine wave
a e
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.
vs reference potential or open circuit
potential and amplitude.
EIS techniques (Multisine)
Galvanostatic Multisine
This ttechnique
Thi
h i
applies
li currentt sine
i wave
adding to bias current and measures
impedance by scanning frequency from SS
start frequency to MS start frequency and
applies
li multiple
lti l simultaneous
i lt
currentt sine
i
wave excitation and measures impedance by
FFT analysis per each two decades from MS
start frequency to final frequency. Amplitude
value
l is
i rms value.
l
Control Types in Sequence Editor
EIS Mode (EIS software)
PEIS
GEIS
G
S
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
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
Advanced Parameter Setting
Cell Information
Safety
y Setting
g
Mass(g) is used to calculate specific
capacity.
For safety operation, safety limit can be defined.
C-rate.
Capacity is used to calculate C
rate.
Current Voltage,
Voltage Power,
Power Temperature
Current,
Temperature, Aux1voltage
FRA range setting for external electronic
load etc
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) 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 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
• 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
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 conversion
Data conversion from graph
Conversion from report
Advanced Graph Setting
Graph Option
EIS Graph Shortcut
Shortcut 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
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),
p( | ), Cp(R|C),
p( | ), Rs(R-L),
( ), Ls(R-L),
( ), Q(R-L),
Q( ), time,, voltage(Vdc),
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|),
value(|Y|) Yphase (Yph),
(Yph) LogZ,
LogZ LogY,
LogY Rs(R-C),
Rs(R C) Cs(R-C),
Cs(R C) Rp(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
Editing
Data delete
ZMANTM Software
Refer to ZMANTM presentation
• Model simulation and fitting
• 2D- and 3D-Bode- and Nyquist plots
• Automatic equivalent
l
circuit model
d l search
h ffunction
• Project concept to handle multiple EIS data analysis
• Parameter plot from fitted elements value
Co pat ble with
w t data format
o at from
o Zahner,
a e , Ga
Gamry,
y,
• Compatible
Ametek etc. (License code is needed)
• 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)
• Various weighting algorithm
• Add/subtract element parameters
• Model library and user model
• C vs. voltage graph
• KK plot
d
Z in
i polar,
l
admittance,
d itt
Y iin P
Polar,
l
modulus,
d l
M iin polar,
l
• IImpedance,Z
dielectric constant, E in polar. data display
• 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
• 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
ZMANTM Software
Thank You !