Overview of Ionogels in Flexible Electronics

Abstract

Ionogels have aroused wide interests in the field of flexible electronics. The combination of solid‐state networks and ionic liquids opens up thousands of possibilities for ionogels. The unique structures of ionogels endow them excellent mechanical properties, conductivity and thermal stability to approach the challenge of flexible electronic. A large number of new ionogels have been developed by different methods including the exchange of solution, polymeric ionic liquid and in‐situ reactions in ionic liquids (gelation of low molecular weight gelators, self‐assembly of block polymers, formation of double‐network structure, ionogel nanocomposites and direct polymerization of polymerizable monomers). The aim of this review is to discuss different preparation methods of ionogels and the comparison of their advantages.

Peptide-Based Gel in Environmental Remediation: Removal of Toxic Organic Dyes and Hazardous Pb2+ and Cd2+ Ions from Wastewater and Oil Spill Recovery

“…Hydrogels can also be very usefulmaterialsin many other fields apart from the abovementionedapplications. [82][83][84][85][86][87][88] On the other hand, xerogels (dried gels) can be used in various fields, such as energy-storage devices, metacomposites, electromagnetic wave absorbing/shielding devices, and others. [89][90][91][92] Xerogels having π-surfaces can perform similar water remediation and hence these materials can be used as an attractive candidate for waste water management.…”

Ionic Liquid-Based Gels for Applications in Electrochemical Energy Storage and Conversion Devices: A Review of Recent Progress and Future Prospects

“…The classification of IL-based gels or ionogels and the different routes to synthesize IL-based gel electrolytes or ionogels have been reviewed by a number of research groups [ 13 , 14 , 15 , 16 ]. The various kinds of IL-based gels can be simply categorized as physical gels and chemical gels according to the type of matrix formation [ 13 , 14 , 15 ].…”

“…The classification of IL-based gels or ionogels and the different routes to synthesize IL-based gel electrolytes or ionogels have been reviewed by a number of research groups [ 13 , 14 , 15 , 16 ]. The various kinds of IL-based gels can be simply categorized as physical gels and chemical gels according to the type of matrix formation [ 13 , 14 , 15 ]. In physical gels, internal, three-dimensional, cross-linking networks occur due to weak reversible interactions such as hydrogen bonds, hydrophobic interactions, van der Waals interactions, π-π interactions, crystallite junctions, etc., whereas in chemical gels the cross-links are formed by covalent bonding.…”

Ionogel-based flexible stress and strain sensors

“…Ionogel is the main constituent material of IFSS. There have been a lot of review literatures discuss the synthesis routes of ionogels and their classification [35][36][37][38]. For high porosity and specific surface area, ionogel electrolytes used in batteries have porous matrices, which are often based on nanoparticles.…”