Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 28, Issue 7, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201704537
Keywords
heteroatom doping; metal-free electrocatalysts; metal-organic frameworks; oxygen reduction reaction; porous carbons
Categories
Funding
- National Science Fund for Distinguished Young Scholars [21625601]
- Major Project of NSF of China [91334203]
- Outstanding Talents Plan from BUCT
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Currently, developing nonprecious-metal catalysts to replace Pt-based electro-catalysts in fuel cells has become a hot topic because the oxygen reduction reaction (ORR) in fuel cells often requires platinum, a precious metal, as a catalyst, which is one of the major hurdles for commercialization of the fuel cells. Recently, the newly emerging metal-organic frameworks (MOFs) have been widely used as self-sacrificed precursors/templates to fabricate heteroatom-doped porous carbons. Here, the recent progress of MOF-derived, heteroatom-doped porous carbon catalysts for ORR in fuel cells is systematically reviewed, and the synthesis strategies for using different MOF precursors to prepare heteroatom-doped porous carbon catalysts, including the direct carbonization of MOFs, MOF and heteroatom source mixture carbonization, and MOF-based composite carbonization are summarized. The emphasis is placed on the precursor design of MOF-derived metal-free catalysts and transition-metal-doped carbon catalysts because the MOF precursors often determine the microstructures of the derived porous carbon catalysts. The discussion provides a useful strategy for in situ synthesis of heteroatom-doped carbon ORR electrocatalysts by rationally designing MOF precursors. Due to the versatility of MOF structures, MOF-derived porous carbons not only provide chances to develop highly efficient ORR electrocatalysts, but also broaden the family of nanoporous carbons for applications in supercapacitors and batteries.
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