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Sucrose in situ physically cross-linked of polyaniline and polyvinyl alcohol to prepare three-dimensional nanocomposite hydrogel with flexibility and high capacitance

文献类型： 外文期刊

作者： Cao, Lin 1 ; Huang, Suyuan 1 ; Lai, Fenglin 1 ; Fang, Zeming 1 ; Cui, Jie 2 ; Du, Xusheng 1 ; Li, Wei 1 ; Lin, Zhidan 1 ; Zh 1 ;

作者机构： 1.Jinan Univ, Inst Adv Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Peoples R China

2.South China Univ Technol, Analyt & Testing Ctr, Guangzhou 510640, Peoples R China

3.Guangdong Acad Agr Sci, Guangdong Prov Engn & Technol Res Ctr Tobacco Bre, Guangdong Prov Key Lab Crop Genet & Improvement, Crops Res Inst, Guangzhou 510640, Peoples R China

关键词： Nanocomposite hydrogel; Polyaniline; Hydrogen; Physical cross-linking; Supercapacitors

期刊名称：IONICS （ 影响因子：2.394； 五年影响因子：2.358 ）

ISSN： 0947-7047

年卷期：

页码：

收录情况： SCI

摘要： Polyaniline (PANI) composite hydrogels with a combination of excellent mechanical and electrochemical properties are promising for the development of flexible wearable devices. Generally, the preparation of a PANI hydrogel requires two steps. Either the polyvinyl acetate (PVA) flexible network is first prepared, followed by the addition of aniline and initiator, or a PANI powder is prepared first and then dispersed in a polyvinyl alcohol solution to form a hydrogel through the freeze-thaw cycle. In this work, we report a simple and effective strategy to synthesize polyaniline nanocomposite hydrogels. A PANI hydrogel electrode with a specific flexibility and excellent electrochemical performance was fabricated in one step by utilizing the hydrogen bonding cross-linking effect between sucrose and PANI and PVA. The three-dimensional network PANI hydrogel capacitor obtained by physical cross-linking exhibited appreciable capacitance performance and excellent rate performance. When the current density was 1 mA/cm(2), the specific areal capacitance of the device reached 500.2 mF/cm(2). When the current density increased 10-fold, the capacitance retention rate was 55.1%. This research proposes a novel solution for designing and developing energy storage hydrogels with several potential applications such as artificial skin, motion detection, and wearable electronics.

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