The road from animal electricity to green energy: combining experiment and theory in electrocatalysis
- 11 July 2012
- journal article
- review article
- Published by Royal Society of Chemistry (RSC) in Energy & Environmental Science
- Vol. 5 (11), 9246-9256
- https://doi.org/10.1039/c2ee21754f
Abstract
Advances in the field of electrocatalysis over the past several decades have been driven both by improvements in fundamental techniques for probing the solid–liquid electrochemical interface and by the technological imperative to develop enhanced low temperature electrocatalytic devices. In this review, we describe how a synergistic interaction between fundamental science and technological progress has resulted in both the emergence of greatly enhanced understanding of electrocatalytic systems and the development of practically improved electrocatalysts. Since it is not possible to summarize in detail all relevant developments in this broad field in such a brief space, we focus selectively on the early historical development of the field and on the use of trends-based analyses to describe the properties of electrocatalytic materials in terms of relatively simple catalytic properties, or descriptors. We begin by discussing aspects of the historical development of “reversible fuel cells” in acidic media, including topics relevant both to fuel cells, wherein hydrogen and oxygen are converted to water with concomitant production of electricity (electrons), and to electrolyzers, wherein electrons are used to initiate water splitting to yield hydrogen and oxygen. We then show how this development has stimulated the development of in situ and ex situ surface sensitive probes and spectroscopic methods capable of elucidating fundamental (atomic-/molecular-level) chemical and electronic properties of electrode–electrolyte interfaces. We further discuss how enhanced computational approaches, that can accurately calculate covalent bonding interactions in these systems, have contributed to the growth of a synergistic experimental/computational approach to electrochemical surface science that has resulted in a highly successful paradigm for the understanding of reactivity trends across a space of different metals, alloys, and metal oxides; this work, in turn, has spurred the development of alternative energy systems for efficient conversion and storage of chemical energy. We conclude with a discussion of some further needs for methodological developments and future research directions.Keywords
This publication has 158 references indexed in Scilit:
- Influence of Inner- and Outer-Sphere Electron Transfer Mechanisms during Electrocatalysis of Oxygen Reduction in Alkaline MediaThe Journal of Physical Chemistry C, 2011
- Thirty years of platinum single crystal electrochemistryJournal of Solid State Electrochemistry, 2011
- Thermodynamic theory of multi-electron transfer reactions: Implications for electrocatalysisJournal of Electroanalytical Chemistry, 2010
- Adsorption of Propylene Carbonate (PC) on the LiCoO2 Surface Investigated by Nonlinear Vibrational SpectroscopyThe Journal of Physical Chemistry C, 2009
- Electrochemical dissolution of surface alloys in acids: Thermodynamic trends from first-principles calculationsElectrochimica Acta, 2007
- In situ FTIR spectra at the Cu electrode/propylene carbonate solution interfaceElectrochimica Acta, 2006
- Ru-Decorated Pt Surfaces as Model Fuel Cell Electrocatalysts for CO ElectrooxidationThe Journal of Physical Chemistry B, 2005
- An atomistic view of electrochemistrySurface Science, 2002
- Vibrational spectroscopy of adsorbed sulfate on Pt(111)Electrochimica Acta, 1994
- Electrocatalysis in the anodic evolution of oxygen and chlorineElectrochimica Acta, 1984