A surfactantless, one-pot reduction approach for Pd@Pt core–shell nano-stars on reduced graphene oxide with enhanced catalytic activity and stability for methanol oxidation in alkaline media.

The PtSb/C catalyzed highly selective transformation of glycerol to dihydroxyacetone and H2 was achieved by controlling the applied electrode potential without using oxidants via an electrocatalytic reactor system in acidic media.

A hybrid composite system of MnCo2 O4 nanowires (MCO NWs) anchored on reduced graphene oxide (RGO) nanosheets was prepared as the bifunctional catalyst of a Li-O2 battery cathode. The catalysts can be obtained from the hybridization of one-dimensional MCO NWs and two-dimensional RGO nanosheets. As O2 -cathode catalysts for Li-O2 cells, the MCO@RGO composites showed a high initial discharge capacity (ca. 11092.1 mAh gcarbon (-1) ) with a high rate performance. The Li-O2 cells could run for more than 35 cycles with high reversibility under a limited specific capacity of 1000 mAh gcarbon (-1) with a low potential polarization of 1.36 V, as compared with those of pure Ketjenblack and MCO NWs. The high cycling stability, low potential polarization, and rate capability suggest that the MCO@RGO composites prepared here are promising catalyst candidates for highly reversible Li-O2 battery cathodes.

A schematic of selective electrochemical CO2 conversion to multicarbon alcohols on N-doped porous carbon-supported Cu catalysts via a two-site mechanism is shown.

A highly efficient multidirectional N-doped porous carbon network with plenty of graphitic N-species has been explored as cathode catalysts in fuel cells.

In this paper, bifunctional catalysts consisting of perovskite LaCoFeO nanowires (LCFO NWs) with reduced graphene oxide (rGO) sheets were prepared for use in lithium-oxygen (Li-O) battery cathodes. The prepared LCFO@rGO composite was explored as a cathode catalyst for Li-O batteries, resulting in an outstanding discharge capacity (ca. 7088.2 mAh g) at the first cycle. Moreover, a high stability of the O-cathode with the LCFO@rGO catalyst was achieved over 56 cycles under the capacity limit of 500 mAh g with a rate of 200 mA g, as compared to the Ketjenblack carbon and LCFO NWs. The enhanced electrochemical performance suggests that these hybrid composites of perovskite LCFO NWs with rGO nanosheets could be a perspective bifunctional catalyst for the cathode oxygen reduction and oxygen evolution reactions in the development of next-generation Li-O battery cathodes.

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