电导率
质子
氯化物
相对湿度
离子
热传导
聚合物
湿度
电阻率和电导率
分析化学(期刊)
无机化学
材料科学
化学
结晶学
物理化学
热力学
复合材料
有机化学
物理
量子力学
作者
Ricardo F. Mendes,Paula Barbosa,Eddy M. Domingues,Patrícia Silva,F. M. Figueiredo,Filipe A. Almeida Paz
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2020-01-01
卷期号:11 (24): 6305-6311
被引量:30
摘要
[Gd(H4nmp)(H2O)2]Cl·2H2O (1) converts into [Gd2(H3nmp)2]·xH2O (2) (x = 1 to 4) with a notable increase in proton conductivity. 1 is a charged layered material counter balanced by chloride ions, with proton conductivity values of 1.23 × 10-5 S cm-1 at 98% relative humidity (RH) and 40 °C. At 98% RH and 94 °C the observed conductivity is 0.51 S cm-1, being to date one of the highest values ever reported for a proton-conducting coordination polymer. This increase is observed during a structural transformation into 2 that occurs at high temperature and RH. While this remarkable conductivity is observed only after transformation and by maintaining high humidity conditions, as-synthesized 2 also shows a conductivity value of 3.79 × 10-2 S cm-1 at 94 °C and 98% RH, still ranked as one of the highest reported values. Moreover, it is shown that the key factor for high proton conduction is the unusual dynamic structural transformation with water insertion and release of chloride ions.
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