Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 22, Pages 25211-25220Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c06423
Keywords
hierarchically porous carbon; coordination polymer; synthetic methodology; oxygen reduction reaction; fuel cell
Funding
- National Key Research and Development Program of China [2018YFA0702001]
- National Natural Science Foundation of China [21671184]
- Fundamental Research Funds for the Central Universities [WK2340000076, WK2060190103]
- Hefei National Synchrotron Radiation Laboratory [KY2060000107]
- Recruitment Program of Thousand Youth Talents
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Hierarchically porous carbons (HPCs) with multimodal pore systems exhibit great technological potentials, especially in the fields of heterogeneous catalysis, energy storage, and conversion. Here, we establish a simple and general approach to HPCs by carbonization of nonporous coordination polymers that are produced by mixing metal salts with polytopic ligands in alkaline aqueous solutions at room temperature. The proposed approach is applicable to a wide scope of ligand molecules (18 examples), thus affording the synthesized HPCs with high diversity in porosity, morphology, and composition. In particular, the prepared HPCs exhibit high specific surface areas (up to 2647 m(2) g(-1)) and large pore volumes (up to 2.39 cm(3 )g(-1)). The HPCs- supported atomically dispersed Fe-N-x catalysts show much-improved fuel cell cathode performance over the micropore-dominated carbon black-supported catalysts, demonstrating the structural superiority of the HPCs for enhancing the mass transport properties.
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