Enhanced performance and durability of sealing gasket for polymer electrolyte membrane fuel cells and water electrolyzer by C–C coupling of functionalized 2D boron nitride nanoflakes

IF 21.8 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2025-10-01 DOI:10.1007/s42114-025-01449-0

Won-Jong Choi, Jinhyuk Lim, Inku Kang, Soonyong So, Duk Man Yu, Sang Jun Yoon, Sungjun Kim, Young Min Jang, Hong Suk Kang, Keun-Hwan Oh

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引用次数: 0

Abstract

A novel straightforward method is introduced for the non-covalent functionalization of boron nitride nanoflakes (BNNFs) using 1-pyrenemethyl methacrylate (1-PMA) as both nanofiller and crosslinking agent for applications in polymer electrolyte membrane (PEM) fuel cells and PEM water electrolyzers. By leveraging boron nitride’s mechanical strength and gas barrier properties, remarkable improvements are achieved in Young’s modulus (32.1% and 96.6% increases for cBN-EPDM and cBN-PDMS, respectively) and reduced hydrogen permeability (55.7% and 42.7% reductions for cBN-EPDM and cBN-PDMS) with addition of just 0.5 wt% to commercial gasket materials such as EPDM rubber and silicone polymer. Furthermore, the inclusion of 1-PMA enables a high crosslinking density (17.1% and 3.4% increase for cBN-EPDM and cBN-PDMS, respectively), leading to nanocomposites with exceptional chemical durability in both acidic (6.6% and 0.2% loss for cBN-EPDM and cBN-PDMS, respectively) and alkaline (3.8% and 2.1% loss for cBN-EPDM and cBN-PDMS, respectively) environments, as well as enhanced thermal stability. PEMFC, PEMWE, and AEMWE performances are evaluated by comparing with commercial alternatives, demonstrating comparable or superior performance. This study offers a viable strategy for enhancing the performance and durability of materials used in fuel cells and water electrolyzers by optimizing the functionalization of 2D BNNFs and maintaining their inherent properties.

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功能化二维氮化硼纳米片C-C偶联提高聚合物电解质膜燃料电池和水电解槽密封垫片的性能和耐久性

介绍了一种新的直接方法，利用1-芘甲基丙烯酸甲酯（1-PMA）作为纳米填料和交联剂，实现氮化硼纳米片（BNNFs）的非共价功能化，用于聚合物电解质膜（PEM）燃料电池和PEM水电解槽。通过利用氮化硼的机械强度和气体阻隔性能，cBN-EPDM和cBN-PDMS的杨氏模量分别提高了32.1%和96.6%，而cBN-EPDM和cBN-PDMS的氢渗透性降低了55.7%和42.7%，而商业垫片材料（如EPDM橡胶和有机硅聚合物）只需添加0.5 wt%。此外，1-PMA的加入使cBN-EPDM和cBN-PDMS的交联密度提高了17.1%和3.4%，使得纳米复合材料在酸性环境（cBN-EPDM和cBN-PDMS分别损失6.6%和0.2%）和碱性环境（cBN-EPDM和cBN-PDMS分别损失3.8%和2.1%）下都具有优异的化学耐久性，并增强了热稳定性。PEMFC、PEMWE和AEMWE的性能通过与商业替代品进行比较来评估，证明其性能相当或更好。本研究通过优化二维BNNFs的功能化并保持其固有特性，为提高燃料电池和水电解槽中使用的材料的性能和耐久性提供了一种可行的策略。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.