CAREER: Multicomponent Transport in Polymer Electrolyte Membranes

职业:聚合物电解质膜中的多组分传输

基本信息

  • 批准号:
    0644593
  • 负责人:
  • 金额:
    $ 40万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2007
  • 资助国家:
    美国
  • 起止时间:
    2007-02-01 至 2013-01-31
  • 项目状态:
    已结题

项目摘要

PROPOSAL NUMBER: CBET-0644593 PROPOSAL TYPE: CAREERPRINCIPAL INVESTIGATOR: YOSSEF ELABDAFFILIATION: DREXEL UNIVERSITYPROPOSAL TITLE: CAREER: MULTICOMPONENT TRANSPORT IN POLYMER ELECTROLYTE MEMBRANESFuel cells offer an innovative and environmentally benign alternative to current power sources. In particular, the proton-exchange membrane (PEM) fuel cell has generated interest for large market applications, such as transportation. A key element in this fuel cell is the PEM, which serves as an electrolyte, exchanging protons from the anode to the cathode to derive electrical energy directly from a chemical fuel; however, the PEM is also the component that contributes to significant power and efficiency losses. Intellectual Merit: The objective is to study multicomponent transport phenomena in PEMs on a molecular scale using time-resolved Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy. The outcomes of this research project will provide a fundamental understanding of multicomponent transport mechanisms and provide a new body of knowledge in fuel cell research. This information will be used to develop new membranes with improved fuel-cell performance. Time-resolved FTIR-ATR spectroscopy distinguishes itself from other techniques because of its ability to sensitively differentiate between various chemical components by providing molecular-level contrast between diffusants and the polymer in real time based on absorbing light at different wavelengths or vibrational bond energies. The technique not only can quantify multiple diffusing components simultaneously, but also can quantitatively measure molecular interactions between diffusants and the polymer through shifts in the infrared spectra, which is exclusive to this technique. This proposed work will answer a number of fundamental transport questions directly linked to key problems with fuel cells: low proton conductivity at high temperatures and low humidities (hydrogen fuel cell) and high methanol crossover rates (methanol fuel cells). A comprehensive plan is proposed, where the PI will first measure and understand multicomponent transport mechanisms in PEMs and design and test new PEMs for improved fuel-cell performance. Preliminary data recently collected in the PI's laboratory: (1) water vapor transport measurements and (2) liquid methanol/water mixture transport measurements in Nafion membranes with time-resolved FTIR-ATR spectroscopy and the (3) development and testing of new PEM blend membranes with improved methanol fuel cell performance, provide a sound framework for the proposed research plan.Broader Impacts: The PI proposes two new programs that will focus on the integration of education and research at both the K-12 and undergraduate level. The first program is for underprivileged (low income families) and underrepresented (minorities) students, specifically students from five Philadelphia city high schools. This program will provide engineering education and an opportunity to disseminate fuel-cell technology and research results through a week-long summer program with hands-on laboratories, projects, demonstrations, and presentations. The second program is a new co-operative (co-op) undergraduate research program that will encourage more undergraduates to pursue research as an alternative to Drexel's traditional industrial non-research based co-op program. This new program is a Drexel-DuPont partnership, where the undergraduate students involved will experience research both in an academic and industrial setting. These programs will provide avenues for the dissemination of fuel-cell research to underprivileged and underrepresented groups at the K-12 level and stimulate more undergraduate research at Drexel.
提案编号:CBET-0644593提案类型:职业生涯主要负责人:约瑟夫·埃拉布隶属于:德雷克塞尔大学提案标题:职业生涯:聚合物电解质膜中的多组分传输燃料电池为当前的电源提供了一种创新的、环境友好的替代品。特别地,质子交换膜(PEM)燃料电池已经引起了对大市场应用(例如运输)的兴趣。这种燃料电池中的一个关键元件是PEM,它作为电解质,将质子从阳极交换到阴极,直接从化学燃料中获得电能;然而,PEM也是导致显著功率和效率损失的组件。智力优势:目的是利用时间分辨傅里叶变换红外衰减全反射(FTIR-ATR)光谱在分子尺度上研究质子交换膜中的多组分输运现象。该研究项目的成果将提供对多组分传输机制的基本理解,并为燃料电池研究提供新的知识体系。这些信息将用于开发具有改进的燃料电池性能的新膜。时间分辨FTIR-ATR光谱学与其他技术的区别在于其能够通过基于吸收不同波长或振动键能的光在真实的时间内提供扩散剂和聚合物之间的分子水平对比度来灵敏地区分各种化学组分。该技术不仅可以同时定量多个扩散组分,而且可以通过红外光谱中的位移定量测量扩散剂和聚合物之间的分子相互作用,这是该技术所独有的。这项拟议的工作将回答一些与燃料电池的关键问题直接相关的基本运输问题:高温和低湿度下的低质子传导率(氢燃料电池)和高甲醇交叉率(甲醇燃料电池)。提出了一个全面的计划,其中PI将首先测量和了解多组分传输机制的质子交换膜和设计和测试新的质子交换膜,以提高燃料电池的性能。最近在PI实验室收集的初步数据:(1)水蒸气传输测量和(2)使用时间分辨FTIR-ATR光谱法测量Nafion膜中的液体甲醇/水混合物传输,以及(3)开发和测试具有改进的甲醇燃料电池性能的新型PEM混合膜,为拟议的研究计划提供了合理的框架。PI提出了两个新的计划,将重点放在教育和研究在K-12和本科水平的整合。第一个项目是针对贫困(低收入家庭)和代表性不足(少数民族)的学生,特别是来自费城五所高中的学生。该计划将提供工程教育和机会,通过为期一周的夏季计划,通过动手实验室,项目,演示和演示来传播燃料电池技术和研究成果。第二个项目是一个新的合作(合作社)本科研究项目,将鼓励更多的本科生从事研究,作为德雷克塞尔传统的工业非研究型合作社项目的替代方案。这个新项目是德雷克塞尔-杜邦的合作项目,参与的本科生将在学术和工业环境中体验研究。这些项目将为向K-12级的弱势群体和代表性不足的群体传播燃料电池研究提供途径,并刺激德雷克塞尔大学更多的本科生研究。

项目成果

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Yossef Elabd其他文献

Yossef Elabd的其他文献

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{{ truncateString('Yossef Elabd', 18)}}的其他基金

Nanomanufacturing of Three-Dimensional Nanofiber-Nanoparticle Electrodes for Ultra-low Platinum Fuel Cells
用于超低铂燃料电池的三维纳米纤维-纳米颗粒电极的纳米制造
  • 批准号:
    1661822
  • 财政年份:
    2017
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
Polymerized Ionic Liquid Multiblock Polymers as Anion Exchange Membranes for Alkaline Fuel Cells
聚合离子液体多嵌段聚合物作为碱性燃料电池的阴离子交换膜
  • 批准号:
    1703645
  • 财政年份:
    2017
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
Collaborative Research: Development of Anti-fouling Electrochemical Membranes for Water Treatment
合作研究:水处理防污电化学膜的开发
  • 批准号:
    1447172
  • 财政年份:
    2014
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
Collaborative Research: Development of Anti-fouling Electrochemical Membranes for Water Treatment
合作研究:水处理防污电化学膜的开发
  • 批准号:
    1158990
  • 财政年份:
    2012
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
NSF/FDA Scholar-in-Residence at FDA: Transport in Polymeric Materials used in Biomedical Devices
NSF/FDA 驻 FDA 学者:生物医学设备中使用的聚合物材料的运输
  • 批准号:
    1041361
  • 财政年份:
    2011
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant

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