Fundamental Study of the Degradation Mechanisms of Polymer Electrolyte Membranes for PEM Fuel Cells

PEM燃料电池聚合物电解质膜降解机理的基础研究

基本信息

  • 批准号:
    1036404
  • 负责人:
  • 金额:
    $ 17.89万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2010
  • 资助国家:
    美国
  • 起止时间:
    2010-03-19 至 2012-09-30
  • 项目状态:
    已结题

项目摘要

CBET-0829082HuangMembrane durability is a significant technical barrier for the commercialization of polymer electrolyte membrane (PEM) fuel cells, which are efficient and clean energy conversion devices that can produce electricity from hydrogen. The pinhole formation and mechanical embrittlement of fuel cell membranes lead to the frequently observed "sudden death" behavior, which limits the service life of PEM fuel cell devices. It is believed that the localized membrane decay is largely responsible for the weakening and the breach of the fuel cell membrane. The objective of this proposal is to explore the fundamental mechanisms of the localized or inhomogeneous membrane decay phenomena through novel in situ diagnostic methods, numerical modeling, and post-mortem analysis. Intellectual Merit: Preliminary evidence has shown that, depending on the operation history, the membrane decay can occur in different modes: uniform or localized. It is hypothesized that the localized membrane decay is a result of a sequence of events, which may include local flooding, local fuel starvation, perturbated membrane potential distribution, carbon corrosion and Pt dissolution, and inhomogeneous membrane decay. The localization of the decay phenomena is thought to be due to the self-amplifying (as against self-extinguishing) nature of the events in that they tend to create conditions that stabilize and reinforce the local membrane decay processes. To prove this hypothesis, novel in situ diagnostic methods are proposed to help reveal the local membrane decay processes in great details. These include confocal micro-Raman spectroscopy and high-resolution neutron imaging. Both techniques will be implemented to obtain in situ maps of the membrane degradation state in running PEM fuel cells. The map is expected to have a spatial (pixel) resolution on the order of 1 by 1 by 1 micron. The measured local intensive variables will be fed into simulation models that predict membrane potential distribution as well as regions that are susceptable to carbon corrosion, Pt dissolution and membrane thinning. These predictions will be further validated by post-mortem analysis. If succesful, the proposed method will result in the first in situ point-wise pictures of the membrane degradation processes in running fuel cells. The proposed in situ diagnostic methods offer significant advantages over traditional diagnostic techniques, and can be used to study various emerging and challenging problems that are related to ionomer membranes. The greater understanding of the mechanisms of the inhomogeneous membane degradation will suggest directions for engineering better materials, better cell/stack configuration, and innovative membrane degradation mitigation strategies to improve the service life of PEM fuel cells.Broader Impact: The proposed program will bring university professors, graduate and undergraduate students together in an exciting research effort, which has the potential to accelerate the commercialization of hydrogen and fuel cell technologies. As part of the education effort, female and minority students will be recruited to work on the project as summer interns. The PI and the students will help create and provide fuel cell enriched science curricula units to K-12 teachers. The adoption and dissemination of these curricula will hopefully intrigue and inspire a large number of K-12 students to pursue research in the broad area of energy for sustainability.
薄膜耐久性是聚合物电解质膜(PEM)燃料电池商业化的一个重要技术障碍,PEM燃料电池是一种高效清洁的能源转换装置,可以从氢气中产生电力。 燃料电池膜的针孔形成和机械脆化导致经常观察到的“突然死亡”行为,这限制了PEM燃料电池装置的使用寿命。 据信,局部膜衰减在很大程度上是导致燃料电池膜弱化和破裂的原因。 本提案的目的是通过新的原位诊断方法,数值模拟和事后分析,探索局部或不均匀的膜衰变现象的基本机制。 智力优势:初步证据表明,根据操作历史,膜衰减可以以不同的模式发生:均匀或局部。 假设局部膜衰减是一系列事件的结果,其中可能包括局部洪水、局部燃料匮乏、扰动的膜电位分布、碳腐蚀和Pt溶解以及不均匀的膜衰减。 衰变现象的局部化被认为是由于事件的自放大(相对于自熄灭)性质,因为它们倾向于创造稳定和加强局部膜衰变过程的条件。 为了证明这一假设,提出了新的原位诊断方法,以帮助揭示当地的膜衰变过程的细节。 这些包括共焦显微拉曼光谱和高分辨率中子成像。 这两种技术将被实施,以获得在运行PEM燃料电池的膜降解状态的原位地图。 该地图预期具有1 × 1 × 1微米量级的空间(像素)分辨率。 测得的局部强度变量将被送入模拟模型,预测膜电位分布以及易受碳腐蚀、Pt溶解和膜变薄影响的区域。 这些预测将通过尸检分析得到进一步验证。 如果成功的话,所提出的方法将导致在运行的燃料电池中的膜降解过程的第一个在原位逐点的图片。 提出的原位诊断方法提供了显着的优势,传统的诊断技术,并可用于研究各种新兴的和具有挑战性的问题,与离聚物膜。 对非均匀膜降解机制的更深入理解将为设计更好的材料、更好的电池/电池堆配置和创新的膜降解缓解策略提供方向,以提高PEM燃料电池的使用寿命。拟议的计划将使大学教授,研究生和本科生在一个令人兴奋的研究工作,这有可能加速氢和燃料电池技术的商业化。 作为教育工作的一部分,将招募女性和少数民族学生作为暑期实习生参与该项目。 PI和学生将帮助创建和提供燃料电池丰富的科学课程单元,以K-12教师。 这些课程的采用和传播将有望激发和激励大量的K-12学生在能源可持续发展的广泛领域进行研究。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Xinyu Huang其他文献

ガウス混合モデルを用いたHuman-Agent Interactionにおけるユーザの表情分析
使用高斯混合模型进行人机交互中的用户面部表情分析
  • DOI:
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Xinyu Huang;Kimiaki Shirahama;Frederic Li and Marcin Grzegorzek;坂戸達陽,ZENG Jie,中野有紀子
  • 通讯作者:
    坂戸達陽,ZENG Jie,中野有紀子
Microscopic study of ion transport in the porous electrode of a desalination battery based on the lattice Boltzmann method
基于格子玻尔兹曼法的海水淡化电池多孔电极离子输运微观研究
  • DOI:
    10.1039/d1nj04770a
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    3.3
  • 作者:
    Shouguang Yao;Jianguo Luo;Rui Liu;Xiaoyu Shen;Xinyu Huang
  • 通讯作者:
    Xinyu Huang
Measurement of mirror surfaces using specular reflection and analytical computation
使用镜面反射和分析计算测量镜面
  • DOI:
    10.1007/s00138-012-0432-6
  • 发表时间:
    2013
  • 期刊:
  • 影响因子:
    3.3
  • 作者:
    Z. Wang;Xinyu Huang;Ruigang Yang;Yuming Zhang
  • 通讯作者:
    Yuming Zhang
Calibrating Pan-Tilt Cameras with Telephoto Lenses
使用长焦镜头校准云台相机
  • DOI:
    10.1007/978-3-540-76386-4_11
  • 发表时间:
    2007
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Xinyu Huang;Jizhou Gao;Ruigang Yang
  • 通讯作者:
    Ruigang Yang
Hole-dominated Fowler–Nordheim tunneling in 2D assembly for infrared imaging
用于红外成像的二维装配中的空穴主导的 Fowler–Nordheim 隧道效应
  • DOI:
    10.1016/j.scib.2020.07.037
  • 发表时间:
  • 期刊:
  • 影响因子:
    18.9
  • 作者:
    Lei Tong;Meng Peng;Peisong Wu;Xinyu Huang;Zheng Li;Zhuiri Peng;Runfeng Lin;Qiaodong Sun;Yaxi Shen;Xuefeng Zhu;Peng Wang;Jianbin Xu;Lei Ye
  • 通讯作者:
    Lei Ye

Xinyu Huang的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Xinyu Huang', 18)}}的其他基金

Collaborative Research: Mixed Ionic Electronic Conducting Cathodes for Intermediate Temperature Solid Oxide Fuel Cells
合作研究:中温固体氧化物燃料电池的混合离子电子导电阴极
  • 批准号:
    1030731
  • 财政年份:
    2010
  • 资助金额:
    $ 17.89万
  • 项目类别:
    Standard Grant
Fundamental Study of the Degradation Mechanisms of Polymer Electrolyte Membranes for PEM Fuel Cells
PEM燃料电池聚合物电解质膜降解机理的基础研究
  • 批准号:
    0829082
  • 财政年份:
    2008
  • 资助金额:
    $ 17.89万
  • 项目类别:
    Standard Grant

相似国自然基金

相似海外基金

Ecosystem degradation, climate change and tropical ecosystem stability - Tanzania as a case study
生态系统退化、气候变化和热带生态系统稳定性——以坦桑尼亚为例
  • 批准号:
    2892582
  • 财政年份:
    2023
  • 资助金额:
    $ 17.89万
  • 项目类别:
    Studentship
Study on DNA aptamer-PROTAC conjugates-based selective ADAR1 degradation for cancer therapy
基于DNA适体-PROTAC缀合物的选择性ADAR1降解用于癌症治疗的研究
  • 批准号:
    23K06067
  • 财政年份:
    2023
  • 资助金额:
    $ 17.89万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Study of a novel regulatory mechanism of peptidoglycan degradation by the Clostridium perfringens autolysin Acp
产气荚膜梭菌自溶素 Acp 降解肽聚糖的新调控机制研究
  • 批准号:
    23K18227
  • 财政年份:
    2023
  • 资助金额:
    $ 17.89万
  • 项目类别:
    Grant-in-Aid for Challenging Research (Exploratory)
Extensive multiplexing of protein nucleic-acid interactions to comprehensively study gene expression regulation from chromatin to mRNA degradation
广泛多重分析蛋白质-核酸相互作用,全面研究从染色质到 mRNA 降解的基因表达调控
  • 批准号:
    10344678
  • 财政年份:
    2022
  • 资助金额:
    $ 17.89万
  • 项目类别:
Extensive multiplexing of protein nucleic-acid interactions to comprehensively study gene expression regulation from chromatin to mRNA degradation
广泛多重分析蛋白质-核酸相互作用,全面研究从染色质到 mRNA 降解的基因表达调控
  • 批准号:
    10557204
  • 财政年份:
    2022
  • 资助金额:
    $ 17.89万
  • 项目类别:
Study on Aging Effect of Wood - Effect of Ultraviolet Light Degradation on Visual Impressions of Wood Finishing Surface
木材老化效应研究——紫外光降解对木材饰面视觉印象的影响
  • 批准号:
    22K12682
  • 财政年份:
    2022
  • 资助金额:
    $ 17.89万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Extensive multiplexing of protein nucleic-acid interactions to comprehensively study gene expression regulation from chromatin to mRNA degradation
广泛多重分析蛋白质-核酸相互作用,全面研究从染色质到 mRNA 降解的基因表达调控
  • 批准号:
    10716310
  • 财政年份:
    2022
  • 资助金额:
    $ 17.89万
  • 项目类别:
Targeted protein degradation as a novel approach to study protein function in human platelets
靶向蛋白质降解作为研究人类血小板蛋白质功能的新方法
  • 批准号:
    NC/V001957/1
  • 财政年份:
    2021
  • 资助金额:
    $ 17.89万
  • 项目类别:
    Training Grant
Biophysical study of the recognition of ER proteins for degradation and lipid homeostasis
ER 蛋白降解和脂质稳态识别的生物物理学研究
  • 批准号:
    10189043
  • 财政年份:
    2021
  • 资助金额:
    $ 17.89万
  • 项目类别:
Developing novel biophysical and cellular assays to study small-molecule mediated protein ubiquitination and degradation
开发新的生物物理和细胞检测方法来研究小分子介导的蛋白质泛素化和降解
  • 批准号:
    2462179
  • 财政年份:
    2020
  • 资助金额:
    $ 17.89万
  • 项目类别:
    Studentship
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了