Decoupling of Light and Dark Reactions in a 2D Niobium Tungstate for Light-Induced Charge Storage and On-Demand Hydrogen Evolution.

ABSTRACT: The direct coupling of light harvesting and charge storage in a single material opens new avenues to light storing devices. Here we demonstrate the decoupling of light and dark reactions in the two-dimensional layered niobium tungstate (TBA)⁺(NbWO₆)^- for on-demand hydrogen evolution and solar battery energy storage. Light illumination drives Li⁺/H⁺ photointercalation into the (TBA)⁺(NbWO₆)^- photoanode, leading to small polaron formation assisted by structural distortions on the WO_x sublattice, along with a light-induced decrease in material resistance over 2 orders of magnitude compared to the dark. The photogenerated electrons can be extracted on demand to produce solar hydrogen upon

SUBMITTER: Wang Y 

PROVIDER: S-EPMC11421010 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature