Resolving Fine Structures of the Electric Double Layer of Electrochemical Interfaces in Ionic Liquids with an AFM Tip Modification Strategy

2014 ◽  
Vol 136 (42) ◽  
pp. 14682-14685 ◽  
Author(s):  
Yun-Xin Zhong ◽  
Jia-Wei Yan ◽  
Mian-Gang Li ◽  
Xiao Zhang ◽  
Ding-Wen He ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
Electric Double Layer ◽  
Fine Structures ◽  
Electrochemical Interfaces

An ether bridge between cations to extend the applicability of ionic liquids in electric double layer capacitors

2016 ◽  
Vol 4 (48) ◽  
pp. 19160-19169 ◽  
Author(s):  
Hsin-Chieh Huang ◽  
Yung-Che Yen ◽  
Jui-Cheng Chang ◽  
Ching-Wen Su ◽  
Pei-Yi Chang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
Low Temperatures ◽  
Electric Double Layer ◽  
Ether Bridge ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Linking 5% cations with an ether bridge prevents EMIm-TFSI crystallization at low temperatures and promotes the performance of the resultant EDLC.

scholarly journals Interfacial Layering in the Electric Double Layer of Ionic Liquids

2020 ◽  
Vol 125 (11) ◽  
Author(s):  
J. Pedro de Souza ◽  
Zachary A. H. Goodwin ◽  
Michael McEldrew ◽  
Alexei A. Kornyshev ◽  
Martin Z. Bazant
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
Electric Double Layer

Electric Double Layer of Au(100)/Imidazolium-Based Ionic Liquids Interface: Effect of Cation Size

2012 ◽  
Vol 117 (1) ◽  
pp. 205-212 ◽  
Author(s):  
Yuzhuan Su ◽  
Jiawei Yan ◽  
Miangang Li ◽  
Meng Zhang ◽  
Bingwei Mao
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
Electric Double Layer ◽  
Interface Effect ◽  
Cation Size

scholarly journals Understanding Electric Double-Layer Gating Based on Ionic Liquids: from Nanoscale to Macroscale

2018 ◽  
Vol 10 (49) ◽  
pp. 43211-43218 ◽  
Author(s):  
Wei Zhao ◽  
Sheng Bi ◽  
Nina Balke ◽  
Philip D. Rack ◽  
Thomas Zac Ward ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
Electric Double Layer

A theoretical consideration of ion size effects on the electric double layer and voltammetry of nanometer-sized disk electrodes

2016 ◽  
Vol 193 ◽  
pp. 251-263 ◽  
Author(s):  
Yu Gao ◽  
Yuwen Liu ◽  
Shengli Chen
Keyword(s):  
Size Effect ◽  
Double Layer ◽  
Electric Double Layer ◽  
Finite Size ◽  
Finite Size Effect ◽  
The Poisson Equation ◽  
Electrochemical Interface ◽  
Disk Electrodes ◽  
Ion Size ◽  
Electrochemical Interfaces

Considering that an electric-double-layer (EDL) structure may significantly impact on the mass transport and charge transfer kinetics at the interfaces of nanometer-sized electrodes, while EDL structures could be altered by the finite sizes of electrolyte and redox ions, the possible effects of ion sizes on EDL structures and voltammetric responses of nanometer-sized disk (nanodisk) electrodes are investigated. Modified Boltzmann and Nernst–Planck (NP) equations, which include the influence of the finite ion volumes, are combined with the Poisson equation and modified Butler–Volmer equation to gain knowledge on how the finite sizes of ions and the nanometer sizes of electrodes may couple with each other to affect the structures and reactivities of a nanoscale electrochemical interface. Two typical ion radii, 0.38 nm and 0.68 nm, which could represent the sizes of the commonly used aqueous electrolyte ions (e.g., the solvated K+) and the organic electrolyte ions (e.g., the solvated TEA+) respectively, are considered. The finite size of ions can result in decreased screening of electrode charges, therefore magnifying EDL effects on the ion transport and the electron transfer at electrochemical interfaces. This finite size effect of ions becomes more pronounced for larger ions and at smaller electrodes as the electrode radii is larger than 10 nm. For electrodes with radii smaller than 10 nm, however, the ion size effect may be less pronounced with decreasing the electrode size. This can be explained in terms of the increased edge effect of disk electrodes at nanometer scales, which could relax the ion crowding at/near the outer Helmholtz plane. The conditions and situations under which the ion sizes may have a significant effect on the voltammetry of electrodes are discussed.

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