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High performance liquid crystalline bionanocomposite ionogels prepared by in situ crosslinking of cellulose/halloysite nanotubes/ionic liquid dispersions and its application in supercapacitors
作者:Shufei Guo, Kang Zhao, Zhiqiang Feng, Yuedi Hou, Hao Li, Jing Zhao, yuelan Tian,Hongzan Song
關鍵字:ionogels;cellulose; halloysite nanotubes
論文來源:期刊
具體來源:Applied Surface Science
發表時間:2018年

A high performance halloysite nanotubes (HNTs)-doped liquid crystalline bionanocomposite ionogels has been

synthesized by in situ crosslinking of cellulose/ionic liquid solutions using bisphenol A epoxy resin via ring

opening reactions with cerium ammonium nitrate, and HNTs as the ionic conducting promoter. These ionogels

with HNTs demonstrate significantly improved ionic conductivity compared with that of pure ionogel without

the addition of HNTs, due to the liquid crystal phases induced by the assembly of anisotropic HNTs nanoparticles

generated ionic channels for ion transport. The ionic conductivity of the ionogels increases with increasing HNTs

concentration, and shearing can improve the room temperature ionic conductivities, which are on the order of

1 mS/cm. The mechanical properties and thermal stability of the nanocomposite ionogels were significantly

improved compared with those of the pure ionogel without HNTs. The ionogel was tested as a flexible gel

electrolyte for supercapacitor device and the measured specific capacitance was maintained for up to 5000

charge-discharge cycles. Such novel liquid crystalline bionanocomposite ionogels with high ionic conductivity,

high mechanical strength, and flexibility are desirable for use in flexible electrochemical devices.


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