金属有机框架/离子液体增强的质子交换膜的制备及性能
Preparation and properties of proton exchange membrane reinforced by metal-organic framework/ionic liquid
查看参考文献26篇
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文摘
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为了提高磺化聚醚醚酮/离子液体(SPEEK/IL)膜的质子电导率,降低膜中IL的流失率,采用溶液浇铸法制备了双金属Cd@Co-MOF-74/磷酸基-4-苯基咪唑离子液体([IM2][H_2PO_4])/SPEEK三元复合膜。结果表明,由于离子液体中的咪唑环与MOF中的-OH或羧酸基团之间形成氢键,咪唑分子被锚定在MOF的孔壁上。在120 ℃、Cd@Co-MOF-74掺杂的质量分数为1.5%时,三元复合膜的质子电导率最高,达到26.93 mS·cm~(-1)。不同含量的双金属MOF/IL/SPEEK三元复合膜中IL流失率在20%~25%之间。在SPEEK/IL膜中掺杂双金属MOF在保证SPEEK膜有较高质子电导率的同时,降低了SPEEK/IL复合膜的溶胀率,进而增加了SPEEK/IL复合膜的使用寿命。 |
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其他语种文摘
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To improve the proton conductivity of the sulfonated polyether ether ketone/ionic liquid (SPEEK/IL) membrane and reduce the loss rate of IL in the membrane, Cd@Co-MOF-74/Phosphate-4- phenylimidazole ionic liquid ([IM2][H_2PO_4])/SPEEK ternary composite membranes were prepared by the solution casting method. Results show that due to the formation of hydrogen bonds between the imidazole ring in ionic liquids and the -OH or carboxylic acid groups in MOF, imidazole molecules are anchored on the pore walls of MOF. The proton conductivity of the ternary composite membrane at 120 ℃ is the highest, reaching 26.93 mS·cm~(-1), when the mass fraction of the Cd@Co-MOF-74 doping is 1.5%. The IL loss rate of bimetallic MOF/IL/SPEEK ternary composite membranes with different contents is generally between 20% and 25%. Doping bimetallic MOFs in SPEEK/IL membranes ensures high proton conductivity while reducing the swelling rate of SPEEK/IL composite membranes, thereby increasing their service life. |
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来源
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材料工程
,2024,52(8):150-158 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2023.000580
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关键词
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磺化聚醚醚酮
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离子液体
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金属有机框架
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质子交换膜
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质子电导率
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地址
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青岛科技大学化工学院, 山东, 青岛, 266042
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4381 |
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学科
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化学工业 |
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基金
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生物基水性聚酯功能材料设计与应用
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山东省高等学校青创科技支持计划
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文献收藏号
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CSCD:7794337
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