Synergistic Effect, Structural and Morphology Evolution, and Doping Mechanism of Spherical Br-Doped Na V (PO ) F /C toward Enhanced Sodium Storage.

Na V (PO ) F has attracted wide attention due to its high voltage platform, and stable crystal structure. However, its application is limited by the low electronic conductivity and the ease formation of impurity. In this paper, the spherical Br-doped Na V (PO ) F /C is successfully obtained by a one-step spray drying technology.

Spontaneously Sn-Doped Bi/BiO Core-Shell Nanowires Toward High-Performance CO Electroreduction to Liquid Fuel.

Electrochemical CO reduction provides a promising strategy to product value-added fuels and chemical feedstocks. However, it remains a grand challenge to further reduce the overpotentials and increase current density for large-scale applications. Here, spontaneously Sn doped Bi/BiOx nanowires (denoted as Bi/Bi(Sn)O NWs) with a core-shell structure were synthesized by an electrochemical dealloying strategy.

Intrinsic strain-induced segregation in multiply twinned Cu-Pt icosahedra.

We present an atomistic simulation study on the compositional arrangements throughout Cu-Pt icosahedra, with a specific focus on the effects of inherent strain on general segregation trends. The coexistence of radial and site-selective segregation patterns is found in bimetallic nanoparticles for a broad range of sizes and compositions, consistent with prior analytical and atomistic models. Through a thorough comparison between the composition patterns and strain-related patterns, it is suggested that the presence of gradient and site-selective segregation is natural to largely relieve the inherent strain by preferential segregation of big atoms at tensile sites and vice versa, as previously hypothesized in the literature.