Journal article
Mo3S4 Clusters as an Effective H2 Evolution Catalyst on Protected Si Photocathodes
Department of Physics, Technical University of Denmark1
Surface Physics and Catalysis, Department of Physics, Technical University of Denmark2
Haldor Topsoe AS3
Silicon Microtechnology, Department of Micro- and Nanotechnology, Technical University of Denmark4
Department of Micro- and Nanotechnology, Technical University of Denmark5
This work shows how a molecular Mo3S4 cluster bonded to a photoelectrode surface via a phosphonate ligand can be a highly effective co-catalyst in photocathodic hydrogen evolution systems. Using a TiO2 protected n+p Si photocathode, H2 evolution occurs with an onset of +0.33 V vs. RHE in an acid solution with this precious metal-free system.
Using just the red part of the AM1.5 solar spectrum (λ > 635 nm), a saturation current of 20 mA/cm2 is achieved from an electrode containing Mo3S4 dropcasted onto a 100 nm TiO2/7 nm Ti/n+p Si electrode.
Language: | English |
---|---|
Publisher: | The Electrochemical Society |
Year: | 2014 |
Pages: | 20H722-H724 |
ISSN: | 19457111 and 00134651 |
Types: | Journal article |
DOI: | 10.1149/2.0161412jes |
ORCIDs: | Seger, Brian , Pedersen, Thomas , Vesborg, Peter Christian Kjærgaard , Hansen, Ole and Chorkendorff, Ib |