基于低共熔溶剂离子凝胶在储能方面的研究进展

Research progress on deep-eutectic-solvent-based ionic gels for energy storage

随着能源危机和环境污染问题的日益突显,人们对绿色、高效的储能器件的需求越来越迫切。在储能器件中选用环保安全、易于合成的绿色材料十分关键。低共熔溶剂(Deep eutectic solvent, DES)因其不易燃、不易挥发、成本低廉和可生物降解,常被用做离子凝胶的塑化剂。基于低共熔溶剂的离子凝胶由低共熔溶剂和凝胶剂(线性聚合物、聚合物网络和超分子网络等)2部分组成。其制备简单,具有的物化性能符合绿色化学的需求;另外兼有低共熔溶剂和凝胶剂的特性,可具有不同的功能(离子导电性、pH值相应性和自愈合性能等)。最后总结了基于低共熔溶剂离子凝胶在储能方面的实际应用,并对其未来发展前景进行了展望。

As the energy crisis and environmental pollution problems become increasingly prominent,the demand for green and efficient energy storage devices is becoming urgent.Therefore,it is very important to select green materials which are environmentally friendliness,safe and easy to synthesize in energy storage devices.Deep eutectic solvents(DESs)are often used as plasticizers in ionic gels because of non-flammablity,non-volatility,low-cost and biodegradability.Ionic gels based on DESs are composed of DESs and gelators(linear polymers,polymer networks,supramolecular networks,etc.).They are sim-ple to prepare,have excellent physical and chemical properties,and meet the demands of green chemis-try.What is more,they take advantage of DESs and gelators,have different functions(ionic conductivi-ty,pH-responsiveness,self-healing performance,etc.).Finally,the practical applications of deep-eu-tectic-solvent-based ionic gels in energy storage are summarized,and their development in the future is prospected.