Microwave-assisted synthesis of mesoporous hemispherical graphite promoted with iron and nitrogen doping for reduction of oxygen
Source abstract
Abstract
Abstract Iron- and nitrogen-doped mesoporous hollow hemispherical graphite (NFe-HG) with average pore size of 12.3 nm, specific surface area of 1487 m2g-1 and 5.3% of N content is synthesized. The uneven carbon oxidation during microwave heating results in mesopores. The NFe-HG displays superior oxygen reduction reaction (ORR) activity with half wave potential (E1/2) of 0.885 V in alkaline solution and comparable ORR activity (E1/2 = 0.838 V) to commercial Pt/C in H2SO4 solution. Due to the graphitization structure and trace residual iron, the NFe-HG performs high electrochemical stability. By comparing with spherical materials, the hemispherical structure of the NFe-HG shows the advantage of smaller volume with similar high specific surface.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Supercapacitor Materials and Fabrication · Fuel Cells and Related Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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