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用于直接甲醇燃料电池的具有超质子导电性的多元协同柔性金属有机框架
作者:小柯机器人 发布时间:2021/10/17 16:13:14

吉林大学李光华团队制备了用于直接甲醇燃料电池的具有超质子导电性的多元协同柔性金属-有机框架。相关研究成果于2021年10月14日发表在《德国应用化学》。

提高质子导电性和制备基于金属有机框架(MOFs)的质子交换膜(PEMs)是开发电解质MOFs的核心问题。

研究人员的目标是设计多元柔性协同策略,以实现在宽湿度范围内具有高导电性的柔性MOFs(FMOFs)。原位粉末X射线衍射(PXRD)和随温度变化的傅里叶变换红外光谱(FT-IR)证明了烷基磺酸的动态扭转和FMOFs的动态呼吸之间的协同自适应,形成连续氢键网络以保持高导电性。基于令人信服的质子导电性,研究人员构建了一系列长期耐用的MOFs基质子交换膜,作为MOF和燃料电池之间的桥梁。因此,柔性PMNS1-40的膜电极组件(MEA)的最大单电池功率密度为34.76 mW/cm2,有望为评估质子导电MOFs在直接甲醇燃料电池中的实际应用打开大门。

附:英文原文

Title: Multivariate  Synergistic  Flexible Metal-Organic Frameworks with  Superproton  Conductivity  for  Direct Methanol Fuel Cells

Author: Zhen-Hua Li, Hui Zeng, Guang Zeng, Chunyu Ru, Guanghua Li, Wenfu Yan, Zhan Shi, Shouhua Feng

Issue&Volume: 2021-10-14

Abstract: Improving proton conductivity and fabricating viable metal-organic frameworks (MOFs) based proton exchange membranes (PEMs) are central issues exploiting electrolyte MOFs. We aim to design multivariate flexibility synergistic strategy to achieve Flexible MOFs (FMOFs) with high conductivity at a wide range of humidity. In situ powder X-ray diffraction (PXRD)   and temperature-dependent Fourier transform infrared spectra (FT-IR) prove the synergistic self-adaption between dynamic torsion of alkyl sulfonic acid and dynamic breathing of FMOF, forming a continuous hydrogen-bonding networks to maintain high conductivity.  Based on the convincing proton conductivity, we construct a series of  long-term durable MOF-based PEMs that serve as a bridge between MOF and fuel cell. Consequently, the membrane electrode assembly (MEA) of the flexible PMNS1-40 exhibits a maximum single-cell power density of 34.76 mW/cm  2   and  hopefully opens doors to evaluate the practical application of proton-conducting MOFs in direct methanol fuel cells.

DOI: 10.1002/anie.202112922

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202112922

期刊信息

Angewandte Chemie:《德国应用化学》,创刊于1887年。隶属于德国化学会,最新IF:12.959
官方网址:https://onlinelibrary.wiley.com/journal/15213773
投稿链接:https://www.editorialmanager.com/anie/default.aspx