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Electrocatalysis for Energy Conversion and Environmental Remediation

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Electrochemistry".

Deadline for manuscript submissions: closed (30 November 2019) | Viewed by 2264

Special Issue Editor


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Guest Editor
Faculty of Chemistry and Biology, University of Santiago de Chile, Santiago, Chile
Interests: electrochemistry; electrocatalysis; inorganic chemistry; fuel cells; sensors

Special Issue Information

Dear Colleagues,

Electrochemistry plays and will play a very important role in a cleaner planet. Electrochemical energy conversion is clean, except in batteries and fuel cells or when fossil fuels are used to recharge them or to generate the fuel. Batteries were invented almost two centuries ago and electric cars were developed in the late 1800s; this is an example of how green energy could have been used in the past using electrochemistry. However, the low cost of fossil fuels almost eliminated electric transportation for many years, and internal combustion engines have since increased the release of gases that cause global warming. Today, the production of green energy from renewable resources (wind, solar, etc.) is becoming more and more important as the global warming problem is becoming more accepted worldwide. Batteries and fuel cells will play a key role in electric mobility. The storage of electricity from renewable sources is also an important issue. Pollution and the elimination of pollutants is also a big issue and electrochemistry plays an important role here.

Most electrochemical reactions involved in energy conversion and remediation involve the transfer of several electrons, exhibit slow kinetics and require the use of electrode materials that contain catalysts. In many cases, these catalysts involve high cost noble metals. Current research in several areas is focused on the development of low cost catalytic materials that can promote the electrochemical reactions at low overpotentials. This is true for the electroreduction of O2 and for the oxidation of fuels. Contributions to this Special Issue will cover several aspects of the development of new catalysts for the reduction of O2 and for the oxidation of fuels and also electrode materials that can catalyze the mineralization of pollutants at high potentials.

Prof. Dr. José Heráclito Zagal
Guest Editor

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Keywords

  • Electrocatalysis
  • Non-precious metal catalysts
  • Oxygen reduction
  • Electroremediation
  • Mineralization
  • Energy conversion
  • Fuel cell methanol oxidation

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Published Papers (1 paper)

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Research

8 pages, 2470 KiB  
Article
A Simple Mechanical Method to Modulate the Electrochemical Electrosorption Processes at Metal Surfaces
by Aiting Yuan, Haixia Zhang and Qibo Deng
Molecules 2019, 24(20), 3662; https://doi.org/10.3390/molecules24203662 - 11 Oct 2019
Cited by 5 | Viewed by 2016
Abstract
The coupling of electrochemical processes and surface strain has been widely investigated in the past. The present work briefly introduces a simple method to modulate the electrochemical process at metal surfaces by mechanical bending. In this way, the static strain at the metal [...] Read more.
The coupling of electrochemical processes and surface strain has been widely investigated in the past. The present work briefly introduces a simple method to modulate the electrochemical process at metal surfaces by mechanical bending. In this way, the static strain at the metal layer can reach the order of 1%. The cyclic voltammogram was used to study the electrosorption process of oxygen species at sputtered metal surfaces under different strain states. The experimental results show that the desorption peak potential of oxygen at the Au surface shifted positively by tensile strain, whereas the desorption peak potential at the Pt surface shifted negatively. This phenomenon indicates that tensile strain has an opposite effect on the electrosorption process for Au and Pt surfaces. Our results agree with the previous reports on the potential variation induced by dynamic strain. This work thus offers a simple method to modulate the electrosorption process at metal surfaces and then to enhance the reactivity of metal electrodes. Full article
(This article belongs to the Special Issue Electrocatalysis for Energy Conversion and Environmental Remediation)
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