A multicomponent metallic glass (MG) with highly efficient and anomalous durability for catalyzing water splitting is reported. The outstanding performance of the MG catalyst contributed by self-optimized active sites originates from the intrinsic chemical heterogeneity and selective dealloying on the disordered surface; thus, a new mechanism for improving the durability of catalysts is uncovered.

This paper puts forward a new kind of bidirectional DC/DC topological structure which is used in technology of lithium batteries .It adopts two-stage bidirectional topological structure which called half-bridge bidirectional converter and buck-boost bidirectional converter. This structure can achieve the transformation in the case of large voltage difference between input voltage and output voltage by DSP taking control of buck-boost bidirectional converter. This topological structure is authenticated in the environment of MATLAB/SIMLINK .The result demonstrates that the converter is stable, and can effectively realize bi-directional transformation between 3V battery voltage and 400V bus bar voltage.