Hierarchically Ordered Porous Carbon with Atomically Dispersed FeN 4 for Ultraefficient Oxygen Reduction Reaction in Proton‐Exchange Membrane Fuel Cells
Yunnan University · Xinjiang Technical Institute of Physics & Chemistry · +4 more institutions
Abstract
Abstract The low catalytic activity and poor mass transport capacity of platinum group metal free (PGM‐free) catalysts seriously restrict the application of proton‐exchange membrane fuel cells (PEMFCs). Catalysts derived from Fe‐doped ZIF‐8 could in theory be as active as Pt/C thanks to the high intrinsic activity of FeN 4 ; however, the micropores fail to meet rapid mass transfer. Herein, an ordered hierarchical porous structure is introduced into Fe‐doped ZIF‐8 single crystals, which were subsequently carbonized to obtain an FeN 4 ‐doped hierarchical ordered porous carbon (FeN 4 /HOPC) skeleton. The optimal catalyst FeN 4 /HOPC‐c‐1000 shows excellent performance with a half‐wave potential of 0.80 V in 0.5 m…
Citation impact
- FWCI
- 15.44
- Percentile
- 100%
- References
- 33
Authors
7- MQMengfei Qiao
Yunnan University, Xinjiang Technical Institute of Physics & Chemistry, Yunnan Institute of Environmental Sciences
- YWYing Wang
Yunnan University, Xinjiang Technical Institute of Physics & Chemistry, Yunnan Institute of Environmental Sciences
- QWQuan Wang
Yunnan University, Yunnan Institute of Environmental Sciences
- GHGuangzhi HuCorresponding
Yunnan University, Zhengzhou University, Yunnan Institute of Environmental Sciences
- XMXamxikamar MamatCorresponding
Xinjiang Technical Institute of Physics & Chemistry
Topics & keywords
- Proton exchange membrane fuel cell
- Catalysis
- Carbonization
- Materials science
- Carbon fibers
- Mass transfer
- Chemical engineering
- Porosity