用于 H2/O2 燃料电池的具有优异电解质性能的多孔磺化聚醚砜上的增强羟基化氮化硼,Energy & Fuels

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用于 H2/O2 燃料电池的具有优异电解质性能的多孔磺化聚醚砜上的增强羟基化氮化硼
Energy & Fuels ( IF 5.2 ) Pub Date : 2022-05-27 , DOI: 10.1021/acs.energyfuels.2c00604
Gayathri Ravi Kumar ₁ , Raja Pugalenthi M ₁ , Guozhong Cao ₂ , Ramesh Prabhu Manimuthu ₁

Affiliation

_{设计具有固有 SO 3}的质子传导膜的高性能无定形多孔框架芳香链中的 H 部分和浸渍质子源有利于开发用于质子交换膜燃料电池的优良电解质。在这项工作中，我们通过改性的非溶剂诱导相转化合成了具有优异质子传导性和稳定性的多孔磺化聚醚砜 (PSPES) 纳米复合膜。羟基化氮化硼 (HBN) 是由块状 BN 通过简单的液体剥离和羟基化制备的，从而产生了少层片材。将 HBN 直接包含在 PSPES 中将锚定或填充在膜的微孔通道上，从而产生出色的稳定性、HBN 保留能力和高电导率。因此，PSPES 和 HBN 通过官能团（SO ₃H-OH) 显示，在多孔结构内产生质子传输桥和连续的质子传输通道。此外，3.5 wt% HBN 增强 PSPES (PSPES-HBN2) 膜的电流和功率密度提高到 795 mA cm ^-2和 220 mW cm ^-2。互连的微孔 PSPES-HBN2 膜在 80 °C 和 100% 湿度下显示出 77.4 ± 3.87 mS cm ^{–1的出色质子传导率，并且在 120 小时耐久性测试后显着降低了膜降解。}

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Reinforced Hydroxylated Boron Nitride on Porous Sulfonated Poly(ether sulfone) with Excellent Electrolyte Properties for H2/O2 Fuel Cells

Designing a high-performing amorphous porous framework of the proton-conducting membrane with inherent SO₃H moieties in the aromatic chain and impregnating the proton source is beneficial for developing an excellent electrolyte for the proton exchange membrane fuel cell. In this work, we synthesize the porous sulfonated poly(ether sulfone) (PSPES) nanocomposite membranes with excellent proton conductivity and stability via modified non-solvent-induced phase inversion. The hydroxylated boron nitride (HBN) was prepared from the bulk BN through simple liquid exfoliation and hydroxylation, which yielded the few-layered sheets. The direct inclusion of HBN into the PSPES will be anchoring or filling on the microporous channels of the membrane, yielding outstanding stability with HBN retention ability and high conductivity. Thereby, an excellent synergistic effect between the PSPES and HBN through the functional groups (SO₃H–OH) is shown, producing the proton transport bridge and continuous proton transfer channels within the porous structure. Besides, the current and power density of the 3.5 wt % HBN reinforced PSPES (PSPES-HBN2) membranes were improved to 795 mA cm^–2 and 220 mW cm^–2. The interconnected microporous PSPES-HBN2 membrane shows an excellent proton conductivity of 77.4 ± 3.87 mS cm^–1 at 80 °C with 100% humidity and notably reduced membrane degradation after a 120 h durability test.

更新日期：2022-05-27

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