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題 名 | Influences of Adding LiCF[feb0]SO[feb0]-PC on the Conductivity of H[feba]MDI Based WPU Electrolytes=添加LiCF[feb0]SO[feb0]-PC對H[feba]MDI為素材的水性PU電解質導電度的影響 |
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作 者 | 羅時勝; 鄭宗田; 溫添進; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 29:4 1998.07[民87.07] |
頁 次 | 頁239-248 |
分類號 | 460.02 |
關鍵詞 | 高分子; 水性; 電解質; 導電度; Lithium polymer batteries; Polymer electrolyte; Gel electrolyte; Waterborne polyurethane; |
語 文 | 英文(English) |
中文摘要 | 本研究以H[feba]MDI,PEG,和DMPA為素材合成水性PU(簡稱 WPU(H[feba]MDI)),作為高分子電解質的基材。並以交流阻抗分析法與循環伏安法,探討LiCF₃SO₃-PC添加量對WPU(H[feba]MDI)電解質導電度與Li /WPU介面電化學行為的影響。由交流阻抗分析結果計算導電度,獲知導電度與溫度的關係符合Arrhenius law,在LiCF₃SO₃-PC含量為 10%,30%,50%時,活化能分別為10.33kcal/mol,9.82kcal/mol, 8.31kcal/mol。由循環伏安掃描結果得知,在WPU(H[feba]MDI)電解質與鋰金屬界面,相當容易發生鋰的溶出與沉積的反應。研究結果並與IPDI,PEG,和 DMPA為素材合成之WPU電解質比較,以釐清硬鏈段在WUP電解質所扮演的角色。 |
英文摘要 | Waterborne polyurethane synthesized from 4,4'-methylenebis(cyclohexyl isocyanate) (H[feba]MDI), polyethylene glycol (PEG), and dimethy1 pro-pionic acid (DMPA) was employed as the matrix of polymer electrolytes. The influences of adding various of LiCF₃SO₃-PC on the conductivity of WPU-based electrolytes and the voltametric behavior at lithium/WPU interface are investigated by AC impedance analysis and cyclic voltammetry. The conductivities calculated from the results of AC impedance obey Arrhenius law with the activation energy of 10.33kcal/mol, 9.82kcal/mol, and 8.31kcal/mol at 10%, 30%, and 50% of LiCF₃SO₃-PC, respectively. On the basis of CV results, the lithium stripping/depositing processes were found to be facile at the lithium/WPU electrolyte interface. Comparisons of the conductivity as well as the voltametric behavior of H[feba] MDI based WPU electrolytes and those of IPDI based WPU electrolytes are made to clarify the differences between two hard segments. |
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