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Preparation and Performance Research of Cellulose Nanofibril-based Carbon Aerogel Electrocatalysts
Received:February 28, 2022  
DOI：10.11980/j.issn.0254-508X.2022.06.003
Key Words:cellulose nanofibril  carbon aerogel  oxygen reduction reaction  zinc-air battery
Fund Project:国家自然科学基金（31971614）；中国博士后基金（2019T120725、2019M652882和2019M662924）。
Author NameAffiliationPostcode
CHEN Yongkang State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
PENG Xinwen* State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
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Abstract: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.
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