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24 results on '"Liang, Binghao"'

17. Hybrid Materials: Synergistic Effects of Wrinkled Graphene and Plasmonics in Stretchable Hybrid Platform for Surface-Enhanced Raman Spectroscopy (Advanced Optical Materials 6/2017)

Author

Chen, Wenjun, primary, Gui, Xuchun, additional, Zheng, Yongjia, additional, Liang, Binghao, additional, Lin, Zhiqiang, additional, Zhao, Chengchun, additional, Chen, Huanjun, additional, Chen, Zefeng, additional, Li, Xinming, additional, and Tang, Zikang, additional

Published
2017
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20. Controllable Fabrication of Large-Area Wrinkled Graphene on a Solution Surface

Author

Chen, Wenjun, Gui, Xuchun, Liang, Binghao, Liu, Ming, Lin, Zhiqiang, Zhu, Yuan, Tang, Zikang, Chen, Wenjun, Gui, Xuchun, Liang, Binghao, Liu, Ming, Lin, Zhiqiang, Zhu, Yuan, and Tang, Zikang

Abstract

It is unavoidable to form wrinkles, which are folds or creases in a material, in graphene, whenever the graphene is prepared by micromechanical exfoliation from graphite or chemical vapor deposition (CVD). However, the controllable formation and structures of graphene with nanoscale wrinkles remains a big challenge. Here, we report a liquid-phase shrink method to controllably fabricate large area wrinkled graphene (WG). The CVD-prepared graphene self-shrinks into a WG on an ethanol solution surface. By modifying the concentration of the ethanol solution, we can easily and efficiently obtain WG with a uniform distribution of wrinkles with different heights. The WG shows high stretchability and can withstand more than 100% tensile strain and up to 720 degrees twist. Furthermore, electromechanical response sensors based on double-layer stacking of WG show ultrahigh sensitivity. This simple, effective, and environmentally friendly liquid-phase shrink method will pave a way for the controllable formation of WG, which is an ideal candidate for application in highly stretchable and highly sensitive electronic devices.

Published
2016

23. Flexible, sandwich-like CNTs/NiCo2O4 hybrid paper electrodes for all-solid state supercapacitors.

Author

Zheng, Yongjia, Lin, Zhiqiang, Chen, Wenjun, Liang, Binghao, Du, Huiwei, Yang, Rongliang, He, Xianfeng, Tang, Zikang, and Gui, Xuchun

Abstract

With the increasing demand for compact storage systems for portable and wearable electronic devices, flexible supercapacitors with high volumetric performance have attracted considerable attention. Here, we report a simple method to fabricate a sandwich-like carbon nanotubes (CNTs)/NiCo2O4 hybrid paper electrode, consisting of a layer of conductive CNT buckypaper coated with honeycomb-like NiCo2O4 nanosheets at both sides. Owing to the high conductivity of the CNT skeleton and vertically aligned structure of NiCo2O4 nanosheets, the free-standing hybrid paper possesses an ultra-high specific capacitance of 1752.3 F g−1 and excellent cycling performance. A flexible all-solid-state symmetrical supercapacitor has been further assembled based on the hybrid paper. The device exhibits excellent volumetric energy and power densities (1.17 mW h cm−3 and 2430 mW cm−3) and deformability, even under bending at an angle of 180°. The hybrid paper can serve as a freestanding and flexible electrode for various energy devices. [ABSTRACT FROM AUTHOR]

Published
2017
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