燃料电池用氯磺化聚苯醚金属有机骨架纳米材料复合质子交换膜,ACS Applied Nano Materials

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燃料电池用氯磺化聚苯醚金属有机骨架纳米材料复合质子交换膜
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2024-04-01 , DOI: 10.1021/acsanm.3c06158
Ming-Yue Zhang ₁ , Xiao-Nan Qin ₁ , Chen-Xi Zhang _{1,

2} , Qing-Lun Wang ₃

Affiliation

质子交换膜（PEM）是PEM燃料电池的关键部件。提高质子传导率是质子交换膜发展中的一个挑战。通过锚定Cr-MIL-101-NH ₂制备了一系列具有高质子传导率的氯磺化聚苯醚（PPO–SO _{2 –Cl）–金属–有机骨架（MOF）纳米材料复合膜，命名为MOF-SO}₂ –PPO。通过 Hinsberg 反应制备PPO–SO ₂ –Cl 中的纳米粒子。还制备了基于磺化聚苯醚（SPPO）和MOF的直接物理掺杂膜，命名为MOF/SPPO。测试了两种复合膜的吸水率、溶胀率、离子交换容量和质子电导率。 MOF-SO_2- _PPO膜比传统掺杂形成的膜具有更好的热稳定性和吸水性。在343 K和98%相对湿度下，MOF-SO _{2 –PPO表现出4.9 × 10}^–2 ± 2.3% S cm ^–1的高质子电导率，是MOF/SPPO的1.96倍。此外，额外的修饰需要将用离子液体修饰的MOF锚定到PPO–SO ₂ –Cl上，产生具有最佳含量的IL-MOF-SO _{2 –PPO-3。 IL-MOF-SO}₂ –PPO-3的质子电导率是SPPO的24倍。这项工作为 MOF 纳米材料在燃料电池中 PEM 的应用提供了可行的见解。

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Chlorosulfonated Polyphenylene Ether Metal–Organic Framework Nanomaterial Composite Proton Exchange Membranes for Fuel Cells

Proton exchange membrane (PEM) is a key part of a PEM fuel battery. It is a challenge in the development of PEMs to enhance the proton conductivity. A series of chlorosulfonated polyphenylene ether (PPO–SO₂–Cl)–metal–organic framework (MOF) nanomaterial composite membranes with high proton conductivity, named MOF-SO₂–PPO, were prepared by anchoring Cr-MIL-101-NH₂ nanoparticles in PPO–SO₂–Cl through Hinsberg reaction. A directly physically doped membrane based on sulfonated poly(phenyl ether) (SPPO) and MOF, named MOF/SPPO, was also prepared. The water absorption, swelling ratio, ion exchange capacity, and proton conductivity of the two composite membranes were tested. The MOF-SO₂–PPO membranes had better thermal stability and water absorption than the membranes formed by traditional doping. At 343 K and 98% relative humidity, MOF-SO₂–PPO exhibited a high proton conductivity of 4.9 × 10^–2 ± 2.3% S cm^–1, which was 1.96 times that of MOF/SPPO. Furthermore, additional modification entailed anchoring the MOF, modified with ionic liquid, onto PPO–SO₂–Cl, yielding IL-MOF-SO₂–PPO-3 with optimal content. The proton conductivity of IL-MOF-SO₂–PPO-3 surpassed that of SPPO by 24 times. This work provides feasible insights into the application of MOF nanomaterials to PEMs in fuel cells.

更新日期：2024-04-01

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