Journal
JOURNAL OF POWER SOURCES
Volume 509, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2021.230365
Keywords
Cathode membrane; Zinc phthalocyanine; Oxygen reduction reaction; Antifouling properties
Funding
- National Key R&D Program of China [2016YFE0106500, 2016YFC0401101]
- National Natural Science Foundation of China [51408156, 51908403]
- Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [QA201935]
- Peiyang Scholars Foundation for Young Scholars, Tianjin University [2020XRG-0011]
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The addition of zinc phthalocyanine (ZnPc) to the cathode membrane improves catalytic performance and antifouling properties. The ZnPc-7 is proven to be an excellent 4e(-) catalyst, producing rapid electrochemical response and stronger electrostatic repulsion force under electric field conditions, reducing membrane fouling. This simple strategy provides a way to enhance the antifouling performance of filtration cathode membranes in microbial fuel cells.
Cathode membrane adding zinc phthalocyanine (ZnPc) is an efficient strategy to improve catalytic performance and antifouling properties. The maximum current density and the lowest charge transfer impedance of cathode membrane with the 0.07 g ZnPc (ZnPc-7) are 11.7 A m(-2) and 5.3 Omega. The ZnPc-7 is also proven to be an excellent 4e(-) catalyst. The ZnPc-7+E (E is electric) produces the minimum total permeability decay rate and the lowest irreversible permeability attenuation rate under electric field, which are decreased by 19% and 64% than the control+E. The ZnPc enhances the antifouling performance and reproducible positive effect under electric field. The foregoing can be attributed to that ZnPc with superior conductivity produces rapid electrochemical response and stronger electrostatic repulsion force under electric field condition, thus reducing the membrane fouling. This work provides a simple strategy for the improvement of antifouling performance of filtration cathode membranes in microbial fuel cells.
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