Lithium-based montmorillonite(Li-MMT)was prepared by inorganic modification of sodiumbased montmorillonite(Na-MMT)using the ion-exchange method under microwave-enhanced conditions.The ionic conductivity of Li-MMT was ...Lithium-based montmorillonite(Li-MMT)was prepared by inorganic modification of sodiumbased montmorillonite(Na-MMT)using the ion-exchange method under microwave-enhanced conditions.The ionic conductivity of Li-MMT was explored at different temperatures,humidities,and exchange ratios.The results showed that the modified materials all exhibited temperature-and humidity-dependent changes in ionic conductivity.When the mass ratio of Na-MMT and anhydrous lithium chloride(LiCl)was 1∶1,Li-MMT exhibited excellent ionic conductivity,with an ionic conductivity of 9.81×10^(-5)S·cm^(-1)for Na-MMT at 40%RH(relative humidity)and 60℃,and ionic conductivity of 4.15×10^(-4)S·cm^(-1)for Li-MMT-1(exchange ratio of Na-MMT and anhydrous LiCl was 1∶1).This modification method is simple and inexpensive as well as provides an effective method to improve the electrical conductivity of Na-MMT.展开更多
基金supported by the National Natural Science Foundation of China(22322102)Science and Technology Project of State Grid Jilin Electric Power Co.,Ltd(2023-07).
文摘Lithium-based montmorillonite(Li-MMT)was prepared by inorganic modification of sodiumbased montmorillonite(Na-MMT)using the ion-exchange method under microwave-enhanced conditions.The ionic conductivity of Li-MMT was explored at different temperatures,humidities,and exchange ratios.The results showed that the modified materials all exhibited temperature-and humidity-dependent changes in ionic conductivity.When the mass ratio of Na-MMT and anhydrous lithium chloride(LiCl)was 1∶1,Li-MMT exhibited excellent ionic conductivity,with an ionic conductivity of 9.81×10^(-5)S·cm^(-1)for Na-MMT at 40%RH(relative humidity)and 60℃,and ionic conductivity of 4.15×10^(-4)S·cm^(-1)for Li-MMT-1(exchange ratio of Na-MMT and anhydrous LiCl was 1∶1).This modification method is simple and inexpensive as well as provides an effective method to improve the electrical conductivity of Na-MMT.
