Laursen, Anders B.1; Pedersen, Thomas5; Malacrida, Paolo1; Seger, Brian1; Hansen, Ole2; Vesborg, Peter C. K.1; Chorkendorff, Ib1
1 Department of Physics, Technical University of Denmark2 Experimental Surface and Nanomaterials Physics, Department of Physics, Technical University of Denmark3 Department of Micro- and Nanotechnology, Technical University of Denmark4 Silicon Microtechnology, Department of Micro- and Nanotechnology, Technical University of Denmark5 DTU Danchip, Technical University of Denmark
A new MoS2 protected n+p-junction Si photocathode for the renewable H2 evolution is presented here. MoS2 acts as both a protective and an electrocatalytic layer, allowing H2 evolution at 0 V vs. RHE for more than 5 days. Using a MoSx surface layer decreases the overpotential for H2 evolution by 200 mV.
Physical Chemistry Chemical Physics, 2013, Vol 15, Issue 46, p. 20000-20004