苯硼酸水凝胶电解质的制备及其在柔性超级电容器中的应用  

Preparation of Hydrogel Electrolyte Bearing Phenylboronic Acid Moieties and Its Application in Flexible Supercapacitors

作　　者：梁恩湘[1] 马艳 阳彩霞 周宁波[1] LIANG Enxiang;MA Yan;YANG Caixia;ZHOU Ningbo(College of Chemistry and Chemical Engineering,Hunan Institute of Science and Technology,Yueyang Hunan 414006,China)

机构地区：[1]湖南理工学院化学化工学院,湖南岳阳414006

出　　处：《包装学报》2022年第2期41-46,共6页Packaging Journal

基　　金：湖南省自然科学基金资助项目(2021JJ40225,2020JJ4336);湖南省教育厅科学研究基金资助项目(20A215)。

摘　　要：以3-丙烯酰胺基苯硼酸(AAPBA)和丙烯酰胺(AM)为原料,过硫酸铵(APS)为引发剂,制备得到机械强度高的水凝胶电解质P(AAPBA-co-AM),探究了其力学性能以及组装成超级电容器后的电化学性能。结果表明:聚3-丙烯酰胺基苯硼酸和聚丙烯酰胺链之间多重氢键的协同作用,使得水凝胶具有良好的力学强度和韧性,其断裂应力为170 kPa,断裂伸长率为5000%。在1 A/g电流密度下,比电容达到116 F/g,经过2000次循环后的电容保持率为74%。超级电容器经多次弯曲、折叠,其电化学性能基本保持不变,展现良好的柔性以及电化学稳定性。A gel electrolytes with high mechanical strength(P(AAPBA-co-AM))was synthesized,in which 3-acetamidophenylboronic acid(AAPBA)and acrylamide(AM)were used as raw materials,ammonium persulfate(APS)was used as the initiator.The mechanical properties of the hydrogel electrolyte and the electrochemical properties of the supercapacitor based on this hydrogel electrolyte were investigated.The results showed that the synergistic effect of multiple hydrogen bonds between poly3-acetamidophenylboronic acid and polyacrylamide chains made the hydrogel possess good mechanical strength and toughness,with a fracture stress of 170 kPa and a breaking elongation rate of 5000%.When the current density was 1 A/g,the specific capacitance reached 116 F/g and the capacity retention rate remained 74%after 2000 cycles.When the supercapacitor was bent and folded,its electrochemical performance basically remained unchanged,showing good flexibility and electrochemical stability.

关 键 词：水凝胶 电解质 柔性超级电容器 力学性能 电化学性能 

分 类 号：TQ427.26[化学工程]