抗冻导电水凝胶的研究进展

Research progress of anti-freezing conductive hydrogel

抗冻导电水凝胶在保持良好机械和导电性能的同时能有效减缓水分的蒸发流失或冻结,这极大地拓宽了导电水凝胶的工作温度范围。综述了抗冻导电水凝胶的构筑策略、机理及最新研究进展,构筑策略主要包括引入金属离子和引入乙二醇、丙三醇、二甲基亚砜等有机溶剂,机理包括金属离子的水合作用和含羟基的有机溶剂与水分子形成的氢键作用。基于自愈性、粘附性和柔韧性介绍了抗冻导电水凝胶在电子器件领域的应用。最后提出了目前存在的问题及未来的研究方向,以期开发出兼顾性能和实际应用需求的抗冻导电水凝胶。

The anti-freezing conductive hydrogel can maintain good mechanical and electrical properties while it can effectively slow down the evaporation loss or freezing of water,which extremely widens the working temperature range of conductive hydrogel.The construction strategy,mechanism and recent research progress of anti-freezing conductive hydrogel are reviewed.The construction strategy mainly includes the introduction of metal ions and the introduction of organic solvents such as ethylene glycol,propylene glycol and dimethyl sulfoxide,and the mechanism includes the hydration of metal ions and the formation of hydrogen bonds between organic solvents containing hydroxyl groups and water molecules.Moreover,the application of anti-freezing conductive hydrogel in the field of electronic devices is introduced based on self-healing,adhesion and flexibility.Finally,the current problems and future research direction are proposed in order to develop anti-freezing conductive hydrogel that take into account both performance and practical application requirements.