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Single Atoms Anchored on Cobalt-Based Catalysts Derived from Hydrogels Containing Phthalocyanine toward the Oxygen Reduction Reaction
journal contribution
posted on 2020-05-21, 20:15 authored by Yuanyuan Fu, Dawei Xu, Yefei Wang, Xuhui Li, Zhengbo Chen, Kai Li, Zhongfeng Li, Lirong Zheng, Xia ZuoHerein, a novel hydrogel-derived
three-dimensional network-like
nanostructured CoOX/Co–N–C(800)
catalyst was synthesized. CoOX nanoparticles
are embedded on N-doped carbon with single Co atoms anchored after
pyrolysis. The as-prepared CoOX/Co–N–C(800)
catalyst possesses excellent electrochemical performance toward the
oxygen reduction reaction with a positive onset and half-wave potential
of 0.95 and 0.88 V (vs RHE), respectively, including almost a four-electron
pathway (3.97) and better durability compared with the 20% commercial
Pt/C catalyst in an alkaline electrolyte. Also, the results demonstrate
that the high performance is attributed to the synergistic effect
of CoOX nanoparticles and single Co atoms.