[Ce2(H2PO3)(C2O4)4](C6N2H16)·H3O·3H2O: A lanthanide phosphite-oxalate compound with high proton conductivity

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Journal of Solid State Chemistry Pub Date : 2024-08-30 DOI:10.1016/j.jssc.2024.124989

Shanshan Zhao, Liangliang Huang, Yang Lu, Xin Shao, Yue Yuan, Yanfeng Bi

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Abstract

A new cerium phosphite-oxalate, [Ce₂(H₂PO₃)(C₂O₄)₄](C₆N₂H₁₆)·H₃O·3H₂O (1), was prepared under solvothermal condition using 1-ethylpiperazine as template. Single-crystal X-ray diffraction proves that compound 1 has a new three-dimensional (3D) structure constructed with CeO₉ polyhedra, [C₂O₄²⁻] ligands and [H₂PO₃⁻] groups. View along the b-axis, 1-ethylpiperazine cations and water molecules alternately located in the adjacent 12-ring channels. Impedance analysis shows that the proton conductivity of 1 is up to 9.17 × 10⁻⁴ S cm⁻¹ at 75 °C and 98 % relative humidity (RH). Stability test reveals that proton conduction has good persistence at the highest temperature and humidity. This suggests that compound 1 possesses promising proton conductivity property, making it into a potential candidate material for proton exchange membranes.

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[Ce2(H2PO3)(C2O4)4](C6N2H16)-H3O-3H2O：一种具有高质子传导性的亚磷酸镧-草酸盐化合物

以 1-ethylpiperazine 为模板，在溶热条件下制备了一种新的亚磷酸铈草酸盐 [Ce2(H2PO3)(C2O4)4](C6N2H16)-H3O-3H2O（1）。单晶 X 射线衍射证明，化合物 1 具有由 CeO9 多面体、[C2O42-] 配体和 [H2PO3-] 基团构建的新三维（3D）结构。沿 b 轴观察，1-乙基哌嗪阳离子和水分子交替位于相邻的 12 环通道中。阻抗分析表明，在 75 °C 和 98 % 相对湿度（RH）条件下，1 的质子电导率高达 9.17 × 10-4 S cm-1。稳定性测试表明，质子传导在最高温度和湿度下都具有良好的持久性。这表明化合物 1 具有良好的质子传导性能，有望成为质子交换膜的候选材料。

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.