来自微乳液合成的COF纳米板的质子交换膜用于水电解
Xu Dong1, Shiyi Zhu1, Xiao Pang1,2
1School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Angewandte Chemie (International ed. in English)
|February 4, 2026
概括
研究人员开发了一种新方法,用于为质子交换膜 (PEM) 制造共价有机框架 (COF) 纳米片. 这些新的膜在水电解中表现出卓越的性能,提供高导电性和强度.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 纳米技术纳米技术
背景情况:
- 质子交换膜 (PEM) 对于水电解至关重要,但需要高质子导电性,机械强度和低胀.
- 现有的COF合成方法往往缺乏可扩展性,统一性和高产量.
研究的目的:
- 开发一种新的微乳液介导的半封闭方法,用于合成共价有机框架 (COF) 纳米片.
- 为了证明这种方法对各种COF结构的多功能性.
- 为了评估COF基膜在PEM水电解中的性能.
主要方法:
- 使用微乳液介导的半封闭合成方法生产COF纳米片.
- 合成了包括TpPa-SO3H,TpBd-(SO3H) 2和TpTG在内的各种COF纳米片.
- 从合成的TpBd-(SO3H) 2 COF纳米片制造出独立的膜.
主要成果:
- 新方法在COF纳米板合成中实现了统一的尺寸,高晶度,高产量和出色的可扩展性.
- TpBd-(SO3H) 2 COF膜表现出创纪录的质子导电性 (1.76 S cm−1),高机械强度 (92.1 MPa) 和低膨胀率 (<5%).
- 在PEM水电解中,TpBd-(SO3H) 2COF膜在2.3V和60°C时达到3.0A cm-2的电流密度,性能优于商用Nafion.
结论:
- 微乳液介导方法为COF纳米板合成提供了一个可扩展和高效的平台.
- 独立的COF膜显示了高效PEM水电解的巨大潜力.
- 这项研究标志着COF膜在PEM水电解中的首次应用,证明了它们的可行性和优势相对于传统材料.
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