Electrocatalytic water splitting (h2O → H2+½ O2)

William A. Goddard

doi:10.1007/978-3-030-18778-1_65

Electrocatalytic water splitting (h₂O → H₂+½ O₂)

William A. Goddard

California Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

Artificial photosynthesis (AP) using solar energy to convert H₂O into H₂ (a fuel) and O₂ is a most promising approach to a carbon-neutral cycle and scalable energy storage. Electrocatalysis provides an attractive candidate route to AP, which could extend to all intermittent renewable energy resources. A major challenge in renewable energy technology is water splitting, which uses solar radiation to photoelectrochemically convert water molecules into H₂ (a fuel) and O₂. Here both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) present challenges for the catalysts. The detailed reaction mechanisms had not yet been established for either one. We did the first mechanisms under electrochemical conditions and including free energy reaction barriers for the transition states for both systems. Here we separately consider the two electrochemical half-reactions, HER and OER, which require drastically different catalysts for optimal performance.

Original language	English
Title of host publication	Springer Series in Materials Science
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	1257-1264
Number of pages	8
DOIs	https://doi.org/10.1007/978-3-030-18778-1_65
Publication status	Published - 1 Jan 2021
Externally published	Yes

Publication series

Name	Springer Series in Materials Science
Volume	284
ISSN (Print)	0933-033X
ISSN (Electronic)	2196-2812

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Access to Document

10.1007/978-3-030-18778-1_65

Cite this

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