High Proton Conductivity of a Cadmium Metal–Organic Framework Constructed from Pyrazolecarboxylate and Its Hybrid Membrane

Autor:	Feng-Dong Wang, Wen-Hui Su, Qing-Lun Wang, Chen-Xi Zhang
Rok vydání:	2021
Předmět:	chemistry.chemical_classification Proton Proton exchange membrane fuel cell Polymer Crystal structure Conductivity Atmospheric temperature range Inorganic Chemistry chemistry.chemical_compound Membrane chemistry Chemical engineering Physical and Theoretical Chemistry Dimethylamine
Zdroj:	Inorganic Chemistry. 60:16337-16345
ISSN:	1520-510X 0020-1669
Popis:	A new type of metal-organic framework, [Cd2(pdc)(H2O)(DMA)2]n (pdc = 3,5-pyrazoledicarboxylic acid; DMA = dimethylamine), named Cd-MOF, was synthesized and characterized. There are regular rectangular pore channels containing a large number of dimethylamine cations in the crystal structure. AC impedance test results show the proton conductivity of Cd-MOF reaches 1.15 × 10-3 S cm-1 at 363 K and 98% RH. In order for its application in fuel cells, the Cd-MOF was introduced into a sulfonated polyphenylene oxide matrix to prepare a hybrid membrane, and the proton conductivity of the hybrid membrane has a high value of 2.64 × 10-1 S cm-1 at 343 K and 98% RH, which is higher than those of most MOF polymer hybrid membranes. The proton conductivity of the hybrid membrane of the SPPO polymer still maintains a certain degree of stability in a wide temperature range. To the best of our knowledge, it is the first proton exchange membrane that combines pyrazolecarboxylate cadmium MOFs and an SPPO polymer with high proton conductivity and good stability. This research may help to further develop the application of MOFs in the field of proton exchange membrane fuel cells.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e1bf51cf2f12cdee6b8c83c51c699db https://doi.org/10.1021/acs.inorgchem.1c02165 Zobrazit plný text záznamu