TY - JOUR
T1 - Prediction of charge-discharge and impedance characteristics of electric double-layer capacitors using porous electrode theory
AU - Hasyim, Muhammad R.
AU - Ma, Danhao
AU - Rajagopalan, Ramakrishnan
AU - Randall, Clive
N1 - Funding Information:
This work was supported by the National Science Foundation ASSIST Nanosystems ERC under Award Number EEC-1160483. The authors would also like to acknowledge the financial support from NSF I/UCRC Center for Dielectrics and Piezoelectrics and ETCE Research Development grant from The Pennsylvania State University.
Publisher Copyright:
© The Author(s) 2017. Published by ECS. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Two first-principles modeling methods were used to analyze and quantitatively predict performance characteristics of Electric Double-Layer Capacitors (EDLCs), namely Time-Domain Current Method (TDCM) and Frequency-Domain Admittance Method (FDAM). TDCM was used to model galvanostatic discharge characteristics of capacitor while FDAM was used to model the impedance spectra. Both the methods showed excellent agreement with experimental impedance and galvanostatic discharge performance of various electrochemical capacitors made using two different commercial carbons. Details at the macroscopic (porous electrode theory) and microscopic (double layer theory) level were incorporated into the models. The methods were also able to follow changes in capacitance and resistance of the capacitor during cycling. Furthermore, FDAM was used to validate the performance of a large-scale commercial EDLC capacitor.
AB - Two first-principles modeling methods were used to analyze and quantitatively predict performance characteristics of Electric Double-Layer Capacitors (EDLCs), namely Time-Domain Current Method (TDCM) and Frequency-Domain Admittance Method (FDAM). TDCM was used to model galvanostatic discharge characteristics of capacitor while FDAM was used to model the impedance spectra. Both the methods showed excellent agreement with experimental impedance and galvanostatic discharge performance of various electrochemical capacitors made using two different commercial carbons. Details at the macroscopic (porous electrode theory) and microscopic (double layer theory) level were incorporated into the models. The methods were also able to follow changes in capacitance and resistance of the capacitor during cycling. Furthermore, FDAM was used to validate the performance of a large-scale commercial EDLC capacitor.
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U2 - 10.1149/2.0051713jes
DO - 10.1149/2.0051713jes
M3 - Article
AN - SCOPUS:85033730371
SN - 0013-4651
VL - 164
SP - A2899-A2913
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 13
ER -
