• 作者： Luo, Shih-Sheng; Cheng, Tsung-Tien; Wen, Ten-Chin
• 中文摘要： 本研究以H/sub 12/MDI，PEG，和DMPA為素材合成水性PU（簡稱 WPU(H/sub12/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LiCF/sub 3/SO/sub 3/-PC添加量對WPU(H/sub 12/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LiCF/sub 3/SO/sub 3/-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/sub 12/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/sub 12/MDI), polyethylene glycol (PEG), and dimethy1 pro-pionic acid (DMPA) was employed as the matrix of polymer electrolytes. The influences of adding various of LiCF/sub 3/SO/sub 3/-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 LiCF/sub 3/SO/sub 3/-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/sub 12/ MDI based WPU electrolytes and those of IPDI based WPU electrolytes are made to clarify the differences between two hard segments.
• 中文關鍵字： 聚胺酯; 鋰電池; 電解質; 導電度; 水性聚胺酯
• 英文關鍵字： Polyurethane (Pu); Lithium Battery; Electrolyte; Conductivity; Waterborne Polyurethane