Complex Capacitance Analysis of Ionic Resistance and Interfacial Capacitance within Cathode Layers of PEMFC and DMFC Electrodes

2019 ◽  
Vol 25 (1) ◽  
pp. 985-994 ◽  
Author(s):  
Jong Hyun Jang ◽  
S. Jeon ◽  
S.-K. Kim ◽  
S.-Y. Lee ◽  
Eun Ae Cho ◽  
...  
Keyword(s):  
Complex Capacitance ◽  
Interfacial Capacitance

Complex Capacitance Analysis of Ionic Resistance and Interfacial Capacitance in PEMFC and DMFC Catalyst Layers

2009 ◽  
Vol 156 (11) ◽  
pp. B1293 ◽  
Author(s):  
Jong Hyun Jang ◽  
Sunyeol Jeon ◽  
Jae Hyung Cho ◽  
Soo-Kil Kim ◽  
Sang-Yeop Lee ◽  
...  
Keyword(s):  
Catalyst Layers ◽  
Complex Capacitance ◽  
Interfacial Capacitance

Interfacial capacitance of an oxidised copper electrode

2014 ◽  
Vol 713 ◽  
pp. 47-57 ◽  
Author(s):  
M. Grdeń
Keyword(s):  
Copper Electrode ◽  
Interfacial Capacitance

The complex capacitance of silicon inversion layers in strong inversion as a function of frequency and resistance

1984 ◽  
Vol 49 (9) ◽  
pp. 859-861 ◽  
Author(s):  
L.C. Zhao ◽  
D.A. Syphers ◽  
B.B. Goldberg ◽  
P.J. Stiles
Keyword(s):  
Strong Inversion ◽  
Complex Capacitance

An Experimental Research on Electrochemical Impedance Spectra of New High-Specific Energy EDLC

2011 ◽  
Vol 675-677 ◽  
pp. 65-68 ◽  
Author(s):  
Zi Lei Liang ◽  
Chong Kuan Cheng ◽  
Ji Bo Liu ◽  
Guo Min Mi
Keyword(s):  
Specific Energy ◽  
Electrochemical Impedance ◽  
Discharge Process ◽  
Electrochemical Impedance Spectra ◽  
Charge Voltage ◽  
Electrochemical Double Layer Capacitors ◽  
Complex Capacitance ◽  
Electrochemical Double Layer ◽  
High Specific Energy ◽  
Double Layer Capacitors

The real times Electrochemical Impedance Spectroscopy (EIS) analysis which corresponds to the charge and discharge process was reported in order to evaluate the relationships between impedance and potential for new high specific energy electrochemical double-layer capacitors (EDLC). Also the Niquist plots were presented and the impedance of the EDLC was discussed in terms of complex capacitance. It was found that the high frequency impedance changed with its potential in charging or discharging process, the medium frequency impedance Rct belonged to the resistance of ions diffusion into micro pore or the inner of electrode material decreased with increasing charge voltage and had a certain capacitance of about 1F.

Charge Storage in Graphene Oxide: Impact of the Cation on Ion Permeability and Interfacial Capacitance

2020 ◽  
Vol 92 (15) ◽  
pp. 10300-10307 ◽  
Author(s):  
Waldemir J. Paschoalino ◽  
Nicholas A. Payne ◽  
Tatiana M. Pessanha ◽  
Samantha M. Gateman ◽  
Lauro T. Kubota ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Charge Storage ◽  
Ion Permeability ◽  
Interfacial Capacitance

scholarly journals Specific ion effects at graphitic interfaces

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Cheng Zhan ◽  
Maira R. Cerón ◽  
Steven A. Hawks ◽  
Minoru Otani ◽  
Brandon C. Wood ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Desalination ◽  
Interfacial Structure ◽  
Ion Hydration ◽  
Specific Ion Effects ◽  
Solvated Ions ◽  
Interfacial Capacitance ◽  
Ion Effects ◽  
Slit Pores ◽  
Interfacial Charge

Abstract Improved understanding of aqueous solutions at graphitic interfaces is critical for energy storage and water desalination. However, many mechanistic details remain unclear, including how interfacial structure and response are dictated by intrinsic properties of solvated ions under applied voltage. In this work, we combine hybrid first-principles/continuum simulations with electrochemical measurements to investigate adsorption of several alkali-metal cations at the interface with graphene and within graphene slit-pores. We confirm that adsorption energy increases with ionic radius, while being highly dependent on the pore size. In addition, in contrast with conventional electrochemical models, we find that interfacial charge transfer contributes non-negligibly to this interaction and can be further enhanced by confinement. We conclude that the measured interfacial capacitance trends result from a complex interplay between voltage, confinement, and specific ion effects-including ion hydration and charge transfer.

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