自21世紀(jì)以來(lái),能源危機(jī)和環(huán)境污染日益嚴(yán)重。首先,隨著全球工業(yè)的快速發(fā)展,煤、石油等傳統(tǒng)燃料的消耗量不斷加大。傳統(tǒng)燃料燃燒將釋放大量的SO₂、CO、CO₂和NO₃氣體,使得環(huán)境污染日益嚴(yán)重。全球氣候變化和溫室效應(yīng)與CO₂的排放息息相關(guān),而其中超過(guò)一半的CO₂排放來(lái)自化石燃料的燃燒。另外,化石燃料燃燒產(chǎn)生的SO₂、NO₃等有毒氣體還將帶來(lái)酸雨、臭氧層破壞以及海洋污染等一系列環(huán)境問(wèn)題,危害社會(huì)的生存和發(fā)展。面對(duì)世界性的能源危機(jī)和環(huán)境污染,燃料電池作為一種清潔的能源轉(zhuǎn)換裝置,是當(dāng)前很有前景的研究方向。燃料電池能通過(guò)電化學(xué)反應(yīng)將燃料中的化學(xué)能直接并且連續(xù)地轉(zhuǎn)換成電能,這是繼水電、火電和核電之后的第四種發(fā)電方式。由于燃料不涉及過(guò)多的能量轉(zhuǎn)換過(guò)程,其轉(zhuǎn)換效率不受“卡諾循環(huán)”的限制,最高可達(dá)60%-80%,其實(shí)際使用效率是內(nèi)燃機(jī)的2-3倍。同時(shí),由于燃料電池整個(gè)運(yùn)行過(guò)程中只會(huì)產(chǎn)生水,因此可以有效緩解環(huán)境污染。除此之外,由于燃料電池內(nèi)部不涉及任何機(jī)械...

【文章頁(yè)數(shù)】：116 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
Abstract
摘要
Nomenclature
Abbreviations
Introduction
    1.1.Background
    1.2.Fuel Cell Technology
        1.2.1.Development History
        1.2.2.Advantages and Disadvantages
    1.3.Types of Fuel Cell
    1.4.Proton Exchange Membrane Fuel Cell
        1.4.1.Development History
        1.4.2.Advantages and Applications
    1.5.Working Principle of PEMFC
    1.6.PEMFC Structure and Key Components
    1.7.Flow Fields
        1.7.1.Functions and Requirements
        1.7.2.Types of Flow Fields
Chapter 2:Literature Review
    2.1.Flow Field Design
        2.1.1.Importance
        2.1.2.Design Principles
        2.1.3.Design Challenges
    2.2.Research Progress in Flow Field Design
    2.3.Comparative Study of Different Flow Fields
    2.4.Research Significance
Chapter 3:Test System and Testing Techniques
    3.1.Fuel Cell Test System
    3.2.Testing Method of Fuel Cell Performance
        3.2.1.Fuel Cell Polarization
        3.2.2.Electrochemical Impedance Spectroscopy
    3.3.Experimental Data Processing and Results Analysis
    3.4.Summary
Chapter 4:Experimental Development
    4.1.Steps for Testing PEMFC Performance
        4.1.1.Assembling of PEMFC
        4.1.2.Activation of PEMFC
    4.2.Operating Conditions
    4.3.Design Description of Flow Fields
        4.3.1.Parallel Design
        4.3.2.Serpentine Design
        4.3.3.Interdigitated Design
        4.3.4.Wavy Design
Chapter 5:Results and Discussion
    5.1.Effects of Flow Field
    5.2.Effects of Relative Humidity
    5.3.Effects of Inlet Gas
    5.4.Effects of Current Density
Chapter 6:Summary and Outlook
    6.1.Conclusions
    6.2.Future work
References
Publications
Acknowledgement



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