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- W4308201854 abstract "Abstract Hierarchical porous carbon with highly active sites has emerged as an ideal support for high‐performance oxygen reduction reaction (ORR) electrocatalysts. By tuning the geometric size and coordination environment of transition metals on hierarchical porous carbon to optimize the catalytic performance for ORR, cobalt (Co) single atoms and Co nanoclusters were synthesized respectively on N‐doping and vacancy‐defective hierarchical porous carbon. Benefited from the high surface area and enhanced mass transfer, cobalt nanoclusters on nitrogen doped hierarchical porous carbon shows a high four‐electron selectivity for ORR. It presents a half wave potential of 0.854 V vs. RHE, which is comparable to that of commercial Pt/C catalysts (0.852 V vs. RHE). Meanwhile, the single‐atomic cobalt coordinated with vacancy‐defective carbon favors the two‐electron reduction of O 2 to hydrogen peroxide (H 2 O 2 ). It exhibits an apparent promotion on selectivity of two‐electron route with a high H 2 O 2 selectivity of around 90 %. This work demonstrates that hierarchical porous carbons could be effectively tuned for applications that favors either four‐electron or two‐electron ORR pathway." @default.
- W4308201854 created "2022-11-09" @default.
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- W4308201854 date "2022-11-27" @default.
- W4308201854 modified "2023-10-14" @default.
- W4308201854 title "Hierarchical Porous Carbon Anchored Atomic/Clustered Cobalt for Boosting Oxygen Reduction Electrocatalysis" @default.
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- W4308201854 doi "https://doi.org/10.1002/cctc.202201192" @default.
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