To construct a highly efficient photoelectrochemical tandem device with silicon
photocathode operating in alkaline conditions, it is desirable to develop stable and active
catalysts which enable the photocathode to reliably perform under an alkaline environment.
With nanostructured passivation layer and edge‐exposed transition metal disulfides, silicon
photocathode provides new opportunities for achieving unbiased alkaline solar water
splitting. Here, the TiO2 nanorod arrays decorated by edge‐rich MoS2 nanoplates are …

Electrically connected and optically paralleled photoelectrochemical-photovoltaic tandem
architecture is placed on the coast in sunlight. A photovoltaic cell produces electricity and
provides it to a photocathode. A silicon photocathode, which consists of TiO 2 nanorods
passivation layer and MoS 2 nanoplates, is submerged under sea water and generates
hydrogen gas. As can be seen from the enlarged part on the cover, the edge-exposed MoS
2 nanoplates contribute to active hydrogen evolution. More details can be found in article …