论文题目： Self-Powered Hydrogel Induced by Ion Transport

所属学科：生物材料

论文作者：Zhijun Shi a, Weiwei Zhao *b, Sixiang Li a, and Guang Yang *a

关键字：

论文来源：期刊

论文具体来源：Nanoscale, 2017, 00, 1-3 | 1

发表日期：2017.01

摘要：

Electroactive hydrogels are needed to enable stretchable electronics because of their flexible mechanical characteristics and electrical conductive properties. We describe a class of viscoelastic, porous, ion-conductive, and self-powered hydrogels that are fabricated based on PHEMA hydrogel (poly(2-hydroxyethyl methacrylate)) and PPy (polypyrrole). They
are capable of creating synchronous ionic current in electrolyte solution when enduring mechanical deformation. Impact conditions on the electric response of the hydrogel, such as stress, strain rate, pH of electrolyte solution, and concentration of ion in the electrolyte solution, have been investigated and reported in this paper. The mechanism of
creating ionic current under deformation is elaborated through numerical simulation and experimental tests. Moreover, by embedding the electrically self-powered hydrogel to a movable object, such as a sport shoe, the patterns of mechanical actions (e.g. walking, running, or jumping) can be identified from the generated electrical current without any assistance of external batteries or power sources. It presents the outstanding potential of this hydrogel in building self-powered soft devices including active sensors and artificial skins.