Advances in Interface Engineering of MoS2-Based Heterostructures as Bifunctional Electrodes for Efficient Water Splitting.

Abstract

Electrocatalytic water splitting is an innovative approach to energy conversion, reducing reliance on dwindling fossil fuels and mitigating climate change. Molybdenum disulfide (MoS2), a cost-effective two-dimensional material, exhibits exceptional optoelectronic properties suitable for avenue applications. To enhance its stability, bifunctional activity, ample active sites, and electronic structure, interface engineering with diverse materials has been employed. The review begins with the electrochemistry of the hydrogen and oxygen evolution reactions. Then, we outline the fundamentals of MoS2, including its chemical composition, crystal structure, and optoelectronic characteristics. Subsequently, the focus shifts to the interface engineering of MoS2 with metals, metal oxides, metal chalcogenides, and carbon-based substances. The review concludes with a summary and perspectives on future developments.