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Rationally designing cheap and efficient electrocatalysts at the atomic level is highly desirable for the hydrogen evolution reaction (HER). Here, we demonstrate a metallic MoS2 electrocatalyst decorated with platinum single atoms. When combined with electron microscopy observations, our synchrotron X-ray characterizations and theoretical calculations clearly reveal that the doped Pt atoms bond to S atoms on the surface of MoS2. Notably, these Pt single atoms serve as critical active centers for the HER through capturing H+ from the solution. The optimized Pt-MoS2 catalysts achieve significantly enhanced HER performance due to the single-atom coordination effect. This finding is expected to facilitate further realization of hybridized catalysts through the monatomic riveting strategy.

Rationally designing cheap and efficient electrocatalysts at the atomic level is highly desirable for the hydrogen evolution reaction (HER). Here, we demonstrate a metallic MoS

Ammonia borane (AB) is regarded as a highly promising candidate for chemical hydrogen-storage materials. Developing low-cost yet efficient catalysts for the dehydrogenation of AB is central to achieving hydrogen conversion. Here a heterostructure of Ni/Ni

Atomic intercalation of different agents into two-dimensional layered materials can engineer the intrinsic structure at the atomic scale and thus tune the physical and chemical properties for specific applications. Here we successfully introduce tin (Sn) atoms into the interlayer of α-MoO3 nanobelts forming a new MoO3-Sn intercalation with ultra-stable structure. Combining with theoretical calculations, our synchrotron radiation-based characterizations and electron microscope observations clearly reveal that the intercalated Sn atoms could bond with five O atoms, forming a pentahedral structure. Subsequently, the Sn-O bonds induce a less distorted [MoO6] octahedral structure, resulting in a unique structure that is distinct with pristine α-MoO3 or any other Molybdenum oxides. Employing as anode for lithium-ion battery, the as-prepared MoO3-Sn nanobelts display a much higher capacity of 520 mAh/g at 500 mA/g than α-MoO3 nanobelts (291 mAh/g), with a Coulombic efficiency of 99.5%. Moreover, owing to the str...