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Synthesis of Phosphovanadate-Based Porous Inorganic Frameworks with High Proton Conductivity.
Ren, Wei-Bo; Sun, Sai; Gao, Zhixin; Li, Bo; Chen, Xinyu; Liu, Qianqian; Zang, Hong-Ying.
Affiliation
  • Ren WB; Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China.
  • Sun S; Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China.
  • Gao Z; Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China.
  • Li B; Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China.
  • Chen X; Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China.
  • Liu Q; Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China.
  • Zang HY; Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China.
Inorg Chem ; 62(49): 20506-20512, 2023 Dec 11.
Article in En | MEDLINE | ID: mdl-37988635
ABSTRACT
Materials with high proton conductivity have attracted significant attention for their wide-ranging applications in proton exchange membrane fuel cells. However, the design of new and efficient porous proton-conducting materials remains a challenging task. The structure-controllable and highly stable metal phosphates can be synthesized into layer or frame networks to provide proton transport capabilities. Herein, we have successfully synthesized three isomorphic metal phosphovanadates, namely, H2(C2H10N2)2[MII(H2O)2(VIVO)8(OH)4(PO4)4(HPO4)4] (C2H8N2 = 1,2-ethylenediamine; M = Co, Ni, and Cu), by the hydrothermal method employing ethylenediamine as a template. These pure inorganic open frameworks exhibit a cavity width ranging from 6.4 to 7.5 Å. Remarkably, the proton conductivity of compounds 1-3 can reach 1 × 10-2 S·cm-1 at 85 °C and 97% relative humidity (RH), and they can remain stable at high temperatures as well as long-term stability. This work provides a novel strategy for the development and design of porous proton-conducting materials.

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Inorg Chem Year: 2023 Document type: Article Affiliation country: China

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Inorg Chem Year: 2023 Document type: Article Affiliation country: China