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題 名 | 鹼性固態聚氧化乙烯電解質=Alkaline Solid Polyethylene Oxide Polymer Electrolyte |
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作 者 | 楊純誠; | 書刊名 | 明志學報 |
卷 期 | 34:1 2002.06[民91.06] |
頁 次 | 頁47-55 |
分類號 | 468.1 |
關鍵詞 | 聚氧化乙烯; 固態高分子電解質; 電化學阻抗; 離子導電度; Polyethylene oxide; PEO; Solid-state polymer electrolyte; Electrochemical AC impedance; Ionic conductivity; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究主要目的為開發以聚氧化乙烯(PEO)高分子為主的鹼性固態電解質(SPE)。使用電化學阻抗分析儀(AC-impedance)、SEM等儀器設備研究此高分子電解質的導電度及表面型態。在PEO中加入PVA或PVME親水性高分子,可提高鹼性固態電解質的導電度。實驗結果發現固態電解質以PEO為基材含少量添加劑PVA或PVME、KOH及水,其導電度(σ)值在10-4~10-5 S/cm之間,電雙層電容(Cdl)值在1-10 μF/cm2之間。摻合少量的PVA或PVME,可以降低PEO高分子的結晶度,使之非結晶性區域增加,離子的傳輸主要發生在高分子內非結晶性區域,此非結晶性區域的增加使KOH在高分子內的解離度提高,進而提高了高分子離子導電度。本研究將此PEO固態電解質應用到鹼性鎳氫電池上,組合成所謂「高分子鎳氫電池」,並做單一電池電性的各項特性分析。 |
英文摘要 | The study is focused on developing an alkaline solid polymer electrolyte (SPE) based on polyethylene oxide (PEO) matrix. AC-impedance and SEM techniques are used to investigate the ionic conductivity properties and the surface morphology of solid polymer electrolyte, respectively. Upon addition of hydrophilic polymer, PVA or PVME in PEO matrix, the ionic conductivity of SPE can be increased. It was experimentally found that the ionic conductivity of PEO electrolyte containing small amount of PVA or PVME with KOH and H2O was around 10-4~10-5 S/cm. The double layer capacitance (Cdl) of SPE is around 1-10 μF/cm2 region. Addition of PVA or PVME polymer will help PEO to decrease its crystallinity, to increase the amorphous domain of PEO. Due to the ion conduction occurring in the amorphous domain, the conductivity of polymer electrolyte can be enhanced; it associates more "free" K+ and OH ions, and leads to the conductivity increase. In this study, the alkaline PEO electrolyte was used in Ni-MH battery, formed a so-called "polymer" Ni-MH bettery. The electrical properties of battery were experimentally examined. |
本系統中英文摘要資訊取自各篇刊載內容。