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Solid phase microwave-assisted fabrication of Fe-doped ZIF-8 for single-atom Fe-N-C electrocatalysts on oxygen reduction
- Source :
- Journal of Energy Chemistry. 54:579-586
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Fe–N–C endowed with inexpensiveness, high activity, and excellent anti-poisoning power have emerged as promising candidate catalysts for oxygen reduction reaction (ORR). Single-atom Fe–N–C electrocatalysts derived from Fe-doped ZIF-8 represent the top-level ORR performance. However, the current fabrication of Fe-doped ZIF-8 relies on heavy consumption of time, energy, cost and organic solvents. Herein, we develop a rapid and solvent-free method to produce Fe-doped ZIF-8 under microwave irradiation, which can be easily amplified in combination with ball-milling. After rational pyrolysis, Fe–N–C catalysts with atomic FeN4 sites well dispersed on the hierarchically porous carbon matrix are obtained, which exhibit exceptional ORR performance with a half-wave potential of 0.782 V (vs. reversible hydrogen electrode (RHE)) and brilliant methanol tolerance. The assembled direct methanol fuel cells (DMFCs) endow a peak power density of 61 mW cm−2 and extraordinary stability, highlighting the application perspective of this strategy.
- Subjects :
- Fabrication
Materials science
Energy Engineering and Power Technology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Catalysis
chemistry.chemical_compound
Fuel Technology
chemistry
Chemical engineering
Phase (matter)
Electrochemistry
Reversible hydrogen electrode
Methanol
0210 nano-technology
Methanol fuel
Pyrolysis
Energy (miscellaneous)
Power density
Subjects
Details
- ISSN :
- 20954956
- Volume :
- 54
- Database :
- OpenAIRE
- Journal :
- Journal of Energy Chemistry
- Accession number :
- edsair.doi...........f25a523a9066181bd7b7f867c22a5b55