Abstract
One of the bottleneck problems in the application of hydrolysis hydrogen production technology is the stability and continuity of activity of electrode at large current density. Herein, an ingenious hierarchical self-supporting wood-based carbon electrocatalyst are developed to improve the efficiency and stability of hydrogen evolution at large current density. The wood-carbon framework with open microchannels achieves efficient mass transfer and overall stability of the electrode under long-term high current density. Significantly, metal-organic framework derived cobalt–nickel Metal bridges (Co, Ni–N–C) facilitate the tight interfacial bonding of wood and nickel–cobalt binary alloy nanoparticles, and achieves the coordination of conductivity, stability and porosity in the wood framework and the migration of the d-band center, thereby enhancing the hydrogen evolution reaction (HER) performance and superior durability. This work provides an efficient method for industrial scale application of wood based self-supported hydrogen evolution electrocatalyst electrode.
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