Water assisted high proton conductance in a pure-inorganic framework vanadoborate. (22nd December 2021)

• Record Type: Journal Article
• Authors: Liu, Xinxin; Zhang, Le; Zhao, SiSi; Guo, Biao; Zhao, Zhen
• Is Part Of: New journal of chemistry. Volume 46:Number 3(2022)
• Page Start: 974
• Page End: 980
• Publication Date: 2021-12-22
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d1nj05335c
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A pure-inorganic framework vanadoborate is successfully synthesized under hydrothermal conditions and exhibits good proton conductivity. Abstract : A new pure-inorganic framework vanadoborate H10 [V12 B18 O54 (OH)6 ]·20H2 O (1 ) was hydrothermally synthesized and structurally characterized. Its inorganic framework was constructed by discrete [V12 B18 O54 (OH)6 ] 10− polyanion clusters decorated with H + as a counterion. For 1, the abundant water molecules in its one-dimensional (1D) channels, together with pure H + and –OH groups from its framework, cooperate to create a continuous hydrogen bond network. Pure H + and extensive H-bonds in the framework facilitate fast proton conduction, and endow this compound with a good proton conductivity of 2.36 × 10 −3 S cm −1 at 353 K and 100% RH, which is ultra-high for vanadoborate-based proton-conducting materials and also can compete with those of numerous state-of-the-art MOF-based proton conductors.