Turing structuring with multiple nanotwins to engineer efficient and stable catalysts for hydrogen evolution reaction.

ABSTRACT: Low-dimensional nanocrystals with controllable defects or strain modifications are newly emerging active electrocatalysts for hydrogen-energy conversion and utilization; however, a crucial challenge remains in insufficient stability due to spontaneous structural degradation and strain relaxation. Here we report a Turing structuring strategy to activate and stabilize superthin metal nanosheets by incorporating high-density nanotwins. Turing configuration, realized by constrained orientation attachment of nanograins, yields intrinsically stable nanotwin network and straining effects, which synergistically reduce the energy barrier of water dissociation and optimize the hydrogen adsorption free energy for hydrogen evolution reaction. Turing PtNiNb nanocatalyst achieves 23.5 and 3.1 times incr

SUBMITTER: Gu J 

PROVIDER: S-EPMC10477283 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature