New electrode materials and devices for thermoelectrochemical studies and applications

Flechsig, Gerd‐Uwe

doi:10.1016/j.coelec.2018.04.002

Cited by 8 publications

(8 citation statements)

References 61 publications

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“…In addition, the heated electrode can promote some electrochemical reactions which suffer from sluggish electro-kinetics at room temperature. 54 For TPrA, its heterogeneous electrochemical oxidation is kinetically sluggish at the ITO electrode. 55 With elevated T e , the anodic oxidation current of TPrA at 1.3 V significantly increases up to 3.4 times from 27.4 °C to 65 °C, accompanied by a lower overpotential (Fig.…”

Section: Resultsmentioning

confidence: 99%

A temperature-tuned electrochemiluminescence layer for reversibly imaging cell topography

Xing

Gou

et al. 2022

Chem. Sci.

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Section: Resultsmentioning

confidence: 99%

A temperature-tuned electrochemiluminescence layer for reversibly imaging cell topography

Xing

Gou

et al. 2022

Chem. Sci.

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“…However, this can be neglected if heating is limited to the area closest to the working electrode, also known as non-isothermal heating. In recent research, non-isothermal heating was mostly achieved either by directly heating the electrode [1] or by irradiating the nearby solution with microwaves [2,3]. Heated electrodes have been utilized in various applications-for example, for DNA investigation [4][5][6] or in a thermoresponsive glucose biosensor [7].…”

Section: Introductionmentioning

confidence: 99%

Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates

et al. 2020

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We report a new configuration for enhancing the performance of scanning electrochemical microscopy (SECM) via heating of the substrate electrode. A flattened Pt microwire was employed as the substrate electrode. The substrate was heated by an alternating current (AC), resulting in an increased mass transfer between the wire surface and the bulk solution. The electrochemical response of the Pt wire during heating was investigated by means of cyclic voltammetry (CV). The open circuit potential (OCP) of the wire was recorded over time, while varied heating currents were applied to investigate the time needed for establishing steady-state conditions. Diffusion layer studies were carried out by performing probe approach curves (PACs) for various measuring modes of SECM. Finally, imaging studies of a heated substrate electrode surface, applying feedback, substrate generation/tip collection (SG/TC), and the competition mode of SECM, were performed and compared with room temperature results.

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“…While all reports show increasing hydrogen and decreasing methane at elevated temperatures, ethylene promotion has varied between studies. 16−19 We expect that this discrepancy may be due to variable convective mass transport between systems, which has been shown to have a significant effect on selectivity at 25 °C and would become especially important at elevated temperatures due to decreased CO 2 solubility. 20−22 There is evidence from the electrochemical sensor literature that enhanced reactivity can be achieved by using local heating.…”

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confidence: 99%

Electrode Surface Heating with Organic Films Improves CO₂ Reduction Kinetics on Copper

Watkins,

Lai,

Schiffer

et al. 2024

ACS Energy Lett.

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Management of the electrode surface temperature is an understudied aspect of (photo)electrode reactor design for complex reactions, such as CO 2 reduction. In this work, we study the impact of local electrode heating on electrochemical reduction of CO 2 reduction. Using the ferri/ferrocyanide open circuit voltage as a reporter of the effective reaction temperature, we reveal how the interplay of surface heating and convective cooling presents an opportunity for cooptimizing mass transport and thermal assistance of electrochemical reactions, where we focus on reduction of CO 2 to carbon-coupled (C 2+ ) products. The introduction of an organic coating on the electrode surface facilitates well-behaved electrode kinetics with near-ambient bulk electrolyte temperature. This approach helps to probe the fundamentals of thermal effects in electrochemical reactions, as demonstrated through Bayesian inference of Tafel kinetic parameters from a suite of high throughput experiments, which reveal a decrease in overpotential for C 2+ products by 0.1 V on polycrystalline copper via 60 °C surface heating.

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New electrode materials and devices for thermoelectrochemical studies and applications

Cited by 8 publications

References 61 publications

A temperature-tuned electrochemiluminescence layer for reversibly imaging cell topography

A temperature-tuned electrochemiluminescence layer for reversibly imaging cell topography

Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates

Electrode Surface Heating with Organic Films Improves CO₂ Reduction Kinetics on Copper

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New electrode materials and devices for thermoelectrochemical studies and applications

Cited by 8 publications

References 61 publications

A temperature-tuned electrochemiluminescence layer for reversibly imaging cell topography

A temperature-tuned electrochemiluminescence layer for reversibly imaging cell topography

Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates

Electrode Surface Heating with Organic Films Improves CO2 Reduction Kinetics on Copper

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Electrode Surface Heating with Organic Films Improves CO₂ Reduction Kinetics on Copper