Jump to main content
Jump to site search

Issue 9, 2010
Previous Article Next Article

Composite photoanodes for photoelectrochemical solar water splitting

Author affiliations

Abstract

Photoelectrochemical (PEC) water splitting is an attractive approach to capturing and storing the earth's abundant solar energy influx. The challenging four-electron water-oxidation half-cell reaction has hindered this technology, giving rise to slow water oxidation kinetics at the photoanode surfaces relative to competitive loss processes. In this perspective, we review recent efforts to improve PEC efficiencies by modification of semiconductor photoanode surfaces with water-oxidation catalysts that can operate at low overpotentials. This approach allows separation of the tasks of photon absorption, charge separation, and surface catalysis, allowing each to be optimized independently. In particular, composite photoanodes marrying nanocrystalline and molecular/non-crystalline components provide flexibility in adjusting the properties of each component, but raise new challenges in interfacial chemistries.

Graphical abstract: Composite photoanodes for photoelectrochemical solar water splitting

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 13 Apr 2010, accepted on 06 Jul 2010 and first published on 06 Aug 2010


Article type: Perspective
DOI: 10.1039/C0EE00030B
Citation: Energy Environ. Sci., 2010,3, 1252-1261
  •   Request permissions

    Composite photoanodes for photoelectrochemical solar water splitting

    J. Sun, D. K. Zhong and D. R. Gamelin, Energy Environ. Sci., 2010, 3, 1252
    DOI: 10.1039/C0EE00030B

Search articles by author