electrochemical impedance spectroscopy
DESCRIPTION
Presentation slide about EIS and it's importance.TRANSCRIPT
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WEEKLY PRESENTATION
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY RESEARCH PROGRESS
12/09/2015
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EQUIVALENT ELECTRICAL CIRCUIT OF A BATTERY
Resistance??
Impedance
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IMPEDANCE SPECTROSCOPY
• Uses a small AC signal for the excitation.
• Output Signal
• Impedance of the circuit :
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GRAPHICAL REPRESENTATION
• Nyquist Plot
• Body Plot
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PHYSICAL CHEMISTRY AND EQUIVALENT CIRCUIT ELEMENT
• Electrolyte Resistance.
• Double Layer Capacitance.
• Polarization Resistance.
• Warburg Impedance.
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ELECTOCHEMICAL IMPEDANCE SPECTROSCOPY
https://www.google.com/search?q=nyquist+plot+impedance&espv=2&biw=1366&bih=643&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjTiYT-_s7JAhUBQSYKHYO4Bb0Q_AUIBigB#imgrc=6n5zhv1NWmY_0M%3A
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EIS
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RESEARCH• NMC Synthesis , trying another sample.
• Finding ways to synthesize li-riched NMC material.
• Finding IQE and JSC for each subcell layer in the triple junction solar cell (Working with Jobayer)
• For finding Jsc, some doubts.
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IQE and Jsc for GaP
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IQE and Jsc for InGaAs
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????
THANK YOU!!