High Proton Conductivity Membrane Based on Sulfonated Polybenzimidazole by Doping Ethylenediaminetetraacetic Acid-Modified MOF-808 for Vanadium Flow Battery
Source abstract
Abstract
The composite membrane (sPBI–MGE- x ) is prepared by introducing MOF-808-grafted ethylenediaminetetraacetic acid (EDTA) into the sulfonated polybenzimidazole (sPBI) with a sulfonation degree of 50. MOF-808, one of Zr-based metal organic frameworks, has tunable pore size, plenty of pathways for proton transport, and superior acid stability. After MOF-808 is grafted by EDTA, the obtained MOF-808-EDTA (MGE) has the amino and carboxyl groups, which can provide additional proton transport channels and the acid–base pair effect between amino and sulfonic acid groups can further strengthen the interaction between MGE and sPBI. Therefore, compared with the pristine sPBI membrane (12.5 mS cm –1 ), the sPBI–MGE-2 composite membrane exhibits high proton conductivity (30.8 mS cm –1 ) and remarkable energy efficiency (83.81%) largely at 60 mA cm –2 .
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Fuel Cells and Related Materials · Advanced battery technologies research · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China
Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China
Funding
State Key Laboratory of Supramolecular Structure and Materials · Department of Science and Technology of Jilin Province · National Natural Science Foundation of China · Education Department of Jilin Province
References (38)
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