Ionic conductivity studies of poly(vinyl alcohol) alkaline solid polymer electrolyte and its use in nickel-zinc cells

• 出版年: Solid State Ionics
• 第一著者: 2-s2.0-0037212617
• フォーマット: 論文
• 言語: English
• 出版事項: 2003
• オンライン･アクセス: https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037212617&doi=10.1016%2fS0167-2738%2802%2900617-3&partnerID=40&md5=810baf66db86166829f12d47dc59a806
• ISSN: 1672738
• DOI: 10.1016/S0167-2738(02)00617-3

X-ray diffraction (XRD) pattern reveals that potassium hydroxide (KOH) disrupts the crystalline nature of poly(vinyl alcohol) (PVA)-based polymer electrolytes and converts them into an amorphous phase. The PVA-KOH alkaline solid polymer electrolyte (ASPE) system with PVA/KOH wt.% ratio of 60:40 exhibits the highest room temperature ionic conductivity of 8.5 × 10-4 S cm-1. This electrolyte was used in the fabrication of a nickel-zinc (Ni-Zn) cell. The cell was charged at a constant current of 10 mA for 1 h providing it with 1.6 V. The cell was cycled 100 times. At the end of the last cycle, the cell still contained a capacity of 5.5 mA h. © 2003 Published by Elsevier Science B.V.