A new hydroxide (OH⁻) ion-conducting polymer electrolyte comprised of tetraethylammonium hydroxide (TEAOH) and polyacrylamide (PAM) was developed. This electrolyte exhibits excellent ionic conductivity greater than 10 mS cm⁻¹ at room temperature and stable shelf-life over an 80 day exposure in various environments. Solid electrochemical double layer capacitors (EDLC) were fabricated and compared to their liquid counterparts. While all EDLC devices showed similar capacitance, the solid EDLC devices outperformed the liquid devices in cycle-life and offered additional advantages such as safety, light weight, and a flexible form factor. Based on structural, thermal, and chemical analyses, this excellent performance can be attributed to a stable amorphous structure and the higher degree of hydration of the polymer electrolyte promoted by a slight hydrolysis between TEAOH and PAM.

中文翻译：

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聚丙烯酰胺基氢氧离子导电电解质的研究及其在全固态电化学电容器中的应用

一个新的氢氧化物（OH ^- ）离子导电性聚合物电解质由氢氧化四乙铵（TEAOH）和聚丙烯酰胺（PAM）的开发。该电解质显示出大于10 mS cm ^-1的优异离子电导率在室温下保持稳定的保存期限，在各种环境中暴露80天以上。制作了固态电化学双层电容器（EDLC），并将其与液体同类电容器进行了比较。尽管所有EDLC器件都显示出相似的电容，但固态EDLC器件在循环寿命方面优于液体器件，并具有安全性，重量轻和形状系数灵活等其他优点。基于结构，热和化学分析，这种出色的性能可归因于稳定的非晶结构以及TEAOH和PAM之间的轻微水解促进了聚合物电解质的更高水合度。