摘要
传统液态电解质存在泄漏风险,而凝胶电解质安全可靠性更高,并且保留了聚合物固态电解质的柔韧性和稳定性,以及液态电解质的高离子电导率。有机凝胶电解质中的有机溶剂会对环境造成污染,而以水为溶剂制备的水凝胶电解质具有低成本、无污染等优势。自修复材料,又称自愈合材料,是一种基于生物体损伤自修复机理的功能材料,将其引入水凝胶电解质中可获得综合性能较好的自愈合水凝胶电解质。基于硼酸酯键的自修复水凝胶电解质具有较高的自愈合能力、柔韧性以及可循环性等,且条件温和、不需要外部刺激即可实现受损材料的快速修复。随着技术的发展,基于硼酸酯键的自愈合水凝胶电解质也开拓出各种各样的应用性能,研究制备出耐寒自愈合水凝胶电解质、可拉伸快速自愈合水凝胶电解质、可调整自愈合水凝胶电解质等,组装的超级电容器具有多功能性。未来,基于动态化学键合成的自愈合水凝胶电解质,其合成方式的最简化、柔韧性、机械强度等仍需更为深入的研究。
While conventional liquid electrolytes are at risk of leakage,gel electrolytes are safer and more reliable,with both the flexibility and stability of polymer solid electrolytes and the high ionic conductivity of liquid electrolytes.The organic solvent in organic gel electrolyte will cause pollution to the environment,but the hydrogel electrolyte prepared with water as the solvent has the advantages of low cost and no pollution.Self-healing material,also known as self-repairing material,is a kind of functional material based on the mechanism of self-healing of damage in living organisms,which can be introduced into hydrogel electrolyte to obtain self-healing hydrogel electrolyte with good comprehensive properties.The self-healing hydrogel electrolyte based on borate ester bond has high self-healing ability,flexibility and recyclability,the conditions are mild,and the damaged material can be repaired quickly without external stimulation.With the development of tech-nology,self-healing hydrogel electrolytes based on borate ester bond have also developed a variety of applica-tion properties.Cold-resistant self-healing hydrogel electrolytes,stretchable fast self-healing hydrogel electrolytes and adjustable self-healing hydrogel electrolytes are prepared,and the supercapacitors assembled have multiple functions.In the future,the synthesis of self-healing hydrogel electrolytes based on dynamic chemical bond needs to be further studied in terms of method simplification,flexibility and mechanical strength.
作者
张艳妮
高艳
Zhang Yanni;Gao Yan(School of Science,Xi'an University of Technology,Xi'an Shaanxi 710054)
出处
《中外能源》
CAS
2024年第2期31-38,共8页
Sino-Global Energy
关键词
水凝胶电解质
自修复材料
硼酸酯键
柔韧性
可循环性
离子电导率
hydrogel electrolyte
self-healing material
borate ester bond
flexibility
recyclability
ionic conductivity
