کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
179757 | 459360 | 2012 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A comparative study of polymer electrolytes for ultrahigh rate applications A comparative study of polymer electrolytes for ultrahigh rate applications](/preview/png/179757.png)
A solid-polymer electrolyte, composed of silicotungstic acid (SiWA), orthophosphoric acid (H3PO4), and polyvinyl alcohol (PVA), was studied and compared with Nafion® in an electrochemical capacitor (EC) device under ambient conditions. While initially both solid-polymer electrolyte based ECs demonstrated exceptionally high rate capability (5000 Vs− 1 and a 0.05 ms time constant), the SiWA-based device showed a much better shelf life than the Nafion-based device. In addition, a thin two-cell, single-package EC utilizing the SiWA-based solid-polymer electrolyte was demonstrated and showed excellent rate capability and shelf life.
► Two polymer electrolyte-based electrochemical capacitors were studied at high rate.
► Both SiWA-H3PO4-PVA and Nafion® were able to perform at 5000 V s− 1 initially.
► SiWA-H3PO4-PVA polymer electrolyte showed a much better shelf life than Nafion®.
► A thin two-cell/single-package capacitor using SiWA-H3PO4-PVA was demonstrated.
Journal: Electrochemistry Communications - Volume 17, April 2012, Pages 48–51