科研之友
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摘要
In this study，nitrogen doped carbon aerogel （NCA） electrocatalyst with hierarchical pore structure was successfully prepared by using cellulose nanofibril （CNF） as carbon framework and g-C3N4 with high nitrogen compound as nitrogen source and pore-forming agent. The physicochemical structure，oxygen reduction reaction （ORR） activity of NCA were investigated，and properties of zinc-air battery based on NCA were also studied. NCA revealed hierarchical pore structure with high specific surface area of 381.77 m2/g，and successful nitrogen doping with nitrogen doping content of 3.27%. NCA displayed excellent ORR performances with high half-wave potential of 0.83 V，which was close to that of commercial platinum-based electrocatalyst. The zinc-air battery in water phase using the NCA as a cathode material exhibited long-term stability for more than 110 h at a current density of 10 mA/cm2，showing a good battery serviceability. ? 2022 China Technical Association of Paper Industry.
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