A Multifunctional Organogel Polyelectrolyte for Flexible Supercapacitors

Abstract

A multifunctional organogel polyelectrolyte (PVA/PTA/CoCl 2 ) is developed comprising the poly(vinyl alcohol) (PVA), terephthalic acid (PTA), and cobalt chloride (CoCl 2 ). PVA and PTA were cross-linked by the esterification reaction at 120 °C in DMSO and could take shape a steady polymer gel, which accomplished a combination of high tensile, mighty mechanical obdurability, good self-healing, great ionic conductivity, and robust self-adhesiveness. Furthermore, activated carbon based supercapacitor with PVA/PTA/CoCl 2 organogel electrolytes delivers high specific capacitance at high scan rates, and CV curves are close to ideal, while exhibiting excellent stability and durability of physical deformation after bending-release cycling, respectively.

An anti-freeze fluorescent organogel with rapid shape-forming properties for constructing artificial light harvesting systems used in extremely cold environments

“…As flexible organic materials, organogels can be modified by adding functional units or changing the corresponding proportions to exhibit remarkable physical properties, including selfrepair, [20][21][22] antibacterial activity, 23 excellent tensile properties 24 and good compression resistance. 25,26 Therefore, some scientists have attempted to add donors and acceptors to these materials to form ALHS organogels.…”

Tough, Freeze-Resistant, Pressure-Response Gel Polymer Electrolytes with Redox Pairs for Flexible Supercapacitors

“…27 For example, Han et al prepared the PVA/4SD/ KI organic gel electrolyte by combining the organic gel electrolyte with a redox active substance. 28 KI was used as the active substance to improve the energy density and conductivity of the gel, and dimethyl sulfoxide and dimethylformamide improved the operating temperature range of the organic gel, forming a conductive channel and promoting the rapid transport of ions. The gel electrolyte exhibited excellent tensile capacity (tensile strain of more than 600%) and extremely high ionic conductivity (30.12 mS cm −1 ), as well as excellent electrochemical properties over a wide temperature range of −40 to 70 °C, showing excellent stability and durability even after destruction.…”

Multifunctional Antifreezing Organogel Polyelectrolyte for a Flexible Supercapacitor

“…With the continuous progress and development of wearable electronic technology, flexible electronic products with the characteristics of portability, wearability, collapsibility, miniature, and lightweight have been paid more and more attention. − As we know, in lots of energy storing devices, flexible solid-state supercapacitors have become one of the most hopeful flexible energy storage devices due to their large specific capacitance, rapid charging and discharging properties, wonderful stability, and excellent mechanical properties. − The rational design of electrode or electrolyte materials − and the optimization of device configuration have become the direction of development to build high-performance flexible supercapacitors (FSCs). Conductive gels with intrinsic flexibility, significant mechanical recycling, and remarkable ionic conductivity can not only be used as ideal materials for FSC electrolytes − but also have considerable applications in tissue engineering, drug delivery, water treatment, bioengineering, and many other fields.…”