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Stretchable iontronics with robust interface bonding between dielectric and ion-conducting elastomers

Nano Research 2023年第9期16卷 11862-11870页

作者： Zhongpeng Li Panpan Zhang Yangshi Shao Zi-Hao Guo Xiong Pu School of Chemistry and Chemical Engineering Center on Nanoenergy ResearchSchool of Physical Science and TechnologyGuangxi UniversityNanning 530004China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

Dry ion-conducting elastomers(ICEs)are emerging stretchable and ionic conductive materials that are demonstrated with excellent thermal stability and great promise in multifunctional iontronic ***,the poor interface between the ICEs and the dielectric material is one of the issues hindering the application of the stretchable iontronic ***,a polydimethylsiloxane(PDMS)based ion-conducting elastomer with dynamic crosslinking structures is reported,which achieves the stretchability of 475%and healing efficiency of 99%.More importantly,a robust interface bonding can be generated between the electrode and the dielectric material,which is beneficial to enhance the performance and lifespan of the flexible iontronic *** this PDMS based ICE as the electrode and PDMS as the dielectric material,two stretchable iontronic devices(triboelectric nanogenerator and capacitive pressure sensor)are realized with overall self-healing and stretchable *** findings provide a promising strategy to achieve integrate stretchable iontronics or electronics with a robust interface between the electrode and dielectric materials.

关键词： ion-conducting elastomers robust interface iontronics triboelectric nanogenerator pressure sensor

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Fibrous Aerogels with Tunable Superwettability for High-Performance Solar-Driven Interfacial Evaporation

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Nano-Micro Letters 2023年第5期15卷 51-68页

作者： Chengjian Xu Mengyue Gao Xiaoxiao Yu Junyan Zhang Yanhua Cheng Meifang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China

Solar-driven interfacial evaporation is an emerging technology for water ***,double-layered structure with separate surface wettability properties is usually employed for evaporator ***,creating materials with tunable properties is a great challenge because the wettability of existing materials is usually ***,we report vinyltrimethoxysilane as a single molecular unit to hybrid with bacterial cellulose(BC)fibrous network,which can be built into robust aerogel with entirely distinct wettability through controlling assembly *** groups or carbon atoms are exposed on the surface of BC nanofibers,resulting in either superhydrophilic or superhydrophobic *** this special property,single component-modified aerogels could be integrated into a double-layered evaporator for water *** 1 sun,our evaporator achieves high water evaporation rates of 1.91 and 4.20 kg m^(-2)h^(-1)under laboratory and outdoor solar conditions,***,this aerogel evaporator shows unprecedented lightweight,structural robustness,long-term stability under extreme conditions,and excellent salt-resistance,highlighting the advantages in synthesis of aerogel materials from the single molecular unit.

关键词： Cellulose aerogel Tunable wettability Thermal insulation robust interface Solar vapor generation

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