本研究利用3,3-Diaminobenzidine和2,2-Bis(4-carboxyphenyl)-hexafluoropropane為單體成功合成含氟聚苯咪唑(6F-PBI)，並使用1,6-Dibromohexane和1,2-Dimethylimidazole成功合成離子液體3-(6-Bromohexyl)-1,2-dimethylimidazolium作為陽離子官能基支鏈，接於6F-PBI主鏈高分子上，製成6FPBI-BrIm1,2薄膜；另添加10 %的(3-Chloropropyl)triethoxysilane作為可交聯位置，並以(3-Chloropropyl)trimethoxysilane、1,2-Dimethylimidazole合成出的離子液體1-methyl-3-[3-(trimethoxy-λ4-silyl)propyl]imidazolium chloride (MTMSPI)作為交聯劑製成出6F-PBI-10S-BrIm1,2交聯薄膜。
6FPBI-BrIm1,2和6FPBI-10S-BrIm1,2薄膜在60 ℃ 時分別具有0.0318、0.0132 S/cm的離子傳導度，皆達到目前陰離子交換膜燃料電池所需的標準(>10-2 S/cm)，最高的離子傳導度出現在6FPBI-BrIm1,2於80 ℃ 下，可達0.0502 S/cm。單電池測試的部分，開路電壓皆穩定且在0.95 V以上，說明其可有效防止氣體穿越，6FPBI-BrIm1,2薄膜於50 ℃下，電流密度90 mA/cm2時有最高功率22 mW/cm2

In this study, fluorine-containing polybenzimidazole (6F-PBI) was successfully synthesized. A 6FPBI-BrIm1,2 polymer was synthesized by adding 3-(6-Bromohexyl)-1,2-dimethylimidazolium (Br-6-Im1,2) ionic liquid as a pendant side chain. 6FPBI-10S-BrIm1,2 copolymer was synthesized by adding 10% (3-Chloropropyl)triethoxysilane and 90% Br-6-Im1,2. A cross-linked membrane was prepared using a 6FPBI-10S-BrIm1,2 copolymer with ionic liquid 1-methyl-3-[3-(trimethoxy-λ4-silyl)propyl]imidazolium chloride as the cross-linker, which exhibited improved dimensional stability, mechanical properties, and oxidative stability. The 6FPBI-BrIm1,2 and 6FPBI-10S-BrIm1,2 membranes showed hydroxide conductivities of 0.0318 and 0.0132 S/cm at 60 ℃ respectively. Both reached the hydroxide conductivity criteria established in recent research (>10-2 S/cm). The highest hydroxide conductivity was 0.0502 S/cm by 6FPBI-BrIm1,2 membrane at 80 ℃ . In the single cell test, we used a 4 cm2 commercial gas diffusion electrode (FuMA-Tech) with a Pt loading of 1 mg/cm2 and then compared the cell performance with the 6FPBI-BrIm1,2 and commercial (FAA-30-5) membranes. Both of them exhibited open circuit voltages of over 0.95V. In the case of the 6FPBI-BrIm1,2 MEA, the power density reached 22 mW/cm2 at 50 ℃ , which was higher than that of the commercial MEA under the same testing conditions.

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