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- W2893774894 abstract "Nitrogen doped porous graphite with trace iron and hollow spherical shape is synthesized by using glucose as carbon source, dopamine hydrochloride as N source, Fe(NO3)3 as Fe source and solid core mesoporous shell silica sphere as template. The glucose and dopamine is carbonized to N-doped carbon; the silica template produces porous and hollow shape with much edges or intrinsic defects; and the addition of Fe increases pore diameter, graphitization degree, total N and pyridinic N content. The characterizations confirm that the doping N leads to active sites for oxygen reduction reaction; the Fe forms active NFe species yet electrochemically unstable, which is removed at last. The intrinsic graphite defect and its synergistic effect with doping N are also believed to favor ORR. The material with the above features corresponds to superior oxygen reduction activity in both alkaline and acidic media to commercial Pt/C. The as-synthesized material with few Fe also shows excellent stability due to the graphitized matrix and little metal with excellent anti-methanol and anti-CO performances. The durability of catalysts is also confirmed by using graphite as counter electrode to exclude the impact of dissolution of Pt counter electrode and its re-deposition on the working electrode." @default.
- W2893774894 created "2018-10-05" @default.
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- W2893774894 date "2019-01-01" @default.
- W2893774894 modified "2023-10-15" @default.
- W2893774894 title "Iron promoted nitrogen doped porous graphite for efficient oxygen reduction reaction in alkaline and acidic media" @default.
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- W2893774894 doi "https://doi.org/10.1016/j.jallcom.2018.09.275" @default.
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