Abstract
The highly efficient oxygen reduction reaction (ORR) electrocatalysts are desirable for the future energy storage scenario. Herein, we report three-dimensional (3D) nanostructured electrocatalysts constructed by in situ vertical assembly of few-layer ReS2 nanosheets onto the surface of nitrogen-doped reduced graphene oxide (ReS2/NRGO). The ReS2/NRGO hybrids are featured with the fully exposed active sites, interconnected conducting channels, and facilitated charge transfer. Accordingly, the as-synthesized ReS2/NRGO hybrids achieve a relatively small Tafel slope of 71 mV dec−1 and high diffusion-limited current density of 5.58 mA cm−2, which holds potential promise for practical applications in fuel cells and metal-air batteries.
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