Boundary activated hydrogen evolution reaction on monolayer MoS₂.

ABSTRACT: Recently, monolayer molybdenum disulphide (MoS₂) has emerged as a promising and non-precious electrocatalyst for hydrogen evolution reaction. However, its performance is largely limited by the low density and poor reactivity of active sites within its basal plane. Here, we report that domain boundaries in the basal plane of monolayer MoS₂ can greatly enhance its hydrogen evolution reaction performance by serving as active sites. Two types of effective domain boundaries, the 2H-2H domain boundaries and the 2H-1T phase boundaries, were investigated. Superior hydrogen evolution reaction catalytic activity, long-term stability and universality in both acidic and alkaline conditions were achieved based on a multi-hierarchy design of these two types of domain boundaries. We

SUBMITTER: Zhu J 

PROVIDER: S-EPMC6430794 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature