Flexible, transparent ion-conducting membranes from two-dimensional nanoclays of intrinsic conductivity

Li Cao, Hong Wu, Xueyi He, Haobo Geng, Runnan Zhang, Ming Qiu, Pengfei Yang, Benbing Shi, Niaz Ali Khan, Zhongyi Jiang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


The recent boom in human-machine interaction has triggered a significant demand for flexible and transparent ionotronics. State-of-the-art ion conductors are built by embedding electrolytes in a transparent gel polymer to form an ion-conducting composite, named ion conductive hydrogels or ionogels. Herein, we demonstrate an intrinsic ion-conducting membrane with ultrahigh ion conductivity, flexibility and transparency based on two-dimensional nanoclays of intrinsic conductivity (NICs). The inherently charged and ordered laminar microstructure exhibits an ultrahigh ion conductivity of 0.45 S cm-1 at 80 °C without external electrolytes, which is 100-1000 times higher than that of state-of-the-art ion-conducting composites. The NICs membranes also exhibit superior stability against harsh conditions including organic solvents, high temperature and prolonged dehydration-hydration cycles. We further demonstrate a NICs touch panel that can realize real-time, human-machine communication by drawing and typing. The nanoclays with intrinsic conductivity may open an avenue to electrolyte-free transparent and flexible ionotronics.
Original languageEnglish (US)
Pages (from-to)25657-25664
Number of pages8
Issue number44
StatePublished - Jan 1 2019
Externally publishedYes

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Generated from Scopus record by KAUST IRTS on 2023-09-21


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