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Polyaniline/Poly(acrylamide‐co‐sodium acrylate) Porous Conductive Hydrogels with High Stretchability by Freeze‐Thaw‐Shrink Treatment for Flexible Electrodes
Macromolecular Materials and Engineering ( IF 3.9 ) Pub Date : 2020-02-20 , DOI: 10.1002/mame.201900737
Lizhang Chen 1 , Weiying Zhang 1 , Yuefeng Dong 1 , Qiuyue Chen 1 , Wanjun Ouyang 1 , Xiao Li 1 , Xiaoguang Ying 1 , Jianying Huang 1
Affiliation  

With the development of alternatives to traditional fossil energy and the rise of wearable technology, flexible energy storage devices have attracted great attention. In this paper, a polyaniline/poly(acrylamide‐sodium acrylate copolymer) hydrogel (PASH) with high flexibility and excellent electrochemical properties for flexible electrodes is fabricated by freeze‐thaw‐shrink treatment of a highly water‐absorptive hydrogel, together with in‐situ polymerization of aniline at a low aniline concentration (0.1 mol L−1). The PASH exhibits a conductivity of 4.05 S m−1 and an elongation at break of 1245%. The freeze‐thaw‐shrink treatment greatly improves the electrochemical performance and stability of the conductive PASH. The area specific capacitance of PASH reaches 849 mF cm−2 and the capacitance maintains 89% after 1000 galvanostatic charge–discharge cycles. All the raw materials are conventional industrialized materials and no additional templating agent is needed during the entire synthesis process. This study provides a cost‐efficient approach for the fabrication of conductive polymer hydrogels, which has a broad application prospect in flexible energy storage electronic devices.

中文翻译:

柔性电极通过冻融收缩处理具有高拉伸性的聚苯胺/聚(丙烯酰胺-丙烯酸钠)多孔导电水凝胶

随着传统化石能源替代品的发展以及可穿戴技术的兴起,柔性储能设备备受关注。本文通过对高吸水率水凝胶进行冻融收缩处理,并与高吸水率水凝胶一起制备了具有高柔韧性和优异电化学性能的聚苯胺/聚(丙烯酰胺-丙烯酸钠共聚物)水凝胶(PASH)。低苯胺浓度(0.1 mol L -1)下苯胺的原位聚合。PASH表现出4.05S m -1的电导率和1245%的断裂伸长率。冻融收缩处理大大提高了导电PASH的电化学性能和稳定性。PASH的面积比电容达到849 mF cm -2经过1000次恒电流充放电循环后,电容保持89%。所有原材料都是常规的工业化​​材料,在整个合成过程中不需要其他模板剂。这项研究为导电聚合物水凝胶的制造提供了一种经济高效的方法,在柔性储能电子设备中具有广阔的应用前景。
更新日期:2020-03-12
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