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  本文關鍵詞：炭氣凝膠的制備及對膨脹石墨基雙極板的改性研究　出處：《哈爾濱工業(yè)大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： 雙極板 膨脹石墨 炭氣凝膠 熱塑性酚醛樹脂

【摘要】：質(zhì)子交換膜燃料電池是一種能量轉換裝置。質(zhì)子交換膜燃料電池與傳統(tǒng)的發(fā)電裝置相比不受卡諾循環(huán)限制，因此具有更高的能量轉化率。以氫作燃料、以氧作氧化劑，且在低溫下即可運行，所以對環(huán)境污染較小。質(zhì)子交換膜燃料電池應用廣泛，不僅可以作為汽車、船舶的動力源，而且可以作為小型的移動電源等。其中雙極板是質(zhì)子交換膜燃料電池的重要組成部分，所以它的性能在很大程度上影響著質(zhì)子交換膜燃料電池的廣闊前景。 本實驗體系首先制備反應原料，制備實驗所需的碳填料球型炭氣凝膠、膨脹石墨、熱塑性酚醛樹脂。分別對原料進行了紅外光譜、掃描電子顯微鏡、熱重分析、X-射線衍射光譜性能測試和結構表征。 其次，分別采用熔融混合法和吸附復合法制備了膨脹石墨基復合材料雙極板，熔融混合法以膨脹石墨和粉末狀酚醛樹脂為原料進行直接混合，經(jīng)過粗混、球磨混合、模壓固化，混合工藝操作簡單。吸附復合法以膨脹石墨和熱塑性酚醛樹脂為原料，利用膨脹石墨能夠吸附油性大分子的性質(zhì)，二者混合比較充分。實驗結果證明不同制備工藝、不同含量的原料配比對復合材料雙極板有一定的影響。結果顯示吸附復合法制備的膨脹石墨基復合材料雙極板的性能比熔融混合工藝好，當樹脂含量在35~50wt.%時雙極板的綜合性能較優(yōu)。 最后，采用不同工藝添加碳填料球型炭氣凝膠制備改性膨脹石墨基復合材料雙極板，并對其進行相關的性能測試和結構表征。性能測試主要包括復合材料及改性復合材料的抗折強度測試、電導率大小測試。實驗相關數(shù)據(jù)表明碳填料球型炭氣凝膠的添加對膨脹石墨基雙極板的性能有一定的提高作用，增大了復合材料的電導率和機械強度，，降低了復合材料的體積密度和接觸角等。炭氣凝膠含量在2wt.%左右改性復合材料的性能最佳。
[Abstract]:Proton exchange membrane fuel cell is an energy conversion device. Compared by Kano looprestriction proton exchange membrane fuel cell power generation device with the traditional, so it has higher efficiency of energy conversion. Using hydrogen as fuel, oxygen as oxidant, and the temperature can be run, so less environmental pollution. The proton exchange membrane fuel cells are widely used, not only can be used as a car, ship power, and can be used as mobile power small. The bipolar plate of proton exchange membrane fuel cell is an important component, so its performance has a great influence on the broad prospects of proton exchange membrane fuel cell.
In this experiment, we first prepared the raw materials to prepare carbon filled carbon spheres, expanded graphite and thermoplastic phenolic resin. The raw materials were characterized by IR, SEM, TG, X- ray diffraction, and the structural characterization.
Secondly, respectively expanded graphite composite bipolar plate substrate prepared by melt mixing method and adsorption composite method, melt mixing method with expanded graphite powder and phenolic resin as raw materials were mixed directly, through coarse mixing, ball milling and mixing, molding curing, mixing process is simple. The adsorption composite method with expanded graphite and thermoplastic phenolic resin as raw material, using expanded graphite adsorption properties to oily molecules, two are mixed fully. The experimental results show that the different preparation process, the ratio of raw materials of different contents have certain influence on the composite bipolar plate. Results show that the performance of expanded graphite composite bipolar plate composite prepared by melt mixing adsorption ratio the process is good, overall performance when the resin content in 35~50wt.% bipolar plate is better.
Finally, using different process adding carbon filler spherical carbon aerogels were prepared by modified expanded graphite composite bipolar plate base, and performance testing and characterization on the related performance test mainly includes composite materials and modified composite flexural strength test, conductivity test. The experimental data show that the size of carbon filler spherical carbon aerogels add on properties of expanded graphite based bipolar plate to a certain extent, the composite conductivity and mechanical strength, reduce the volume of the composite density and contact angle. The content of carbon aerogel modified composite material is about 2wt.% in the best performance.

【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM911.4;O613.71

【參考文獻】

相關期刊論文 前7條

1 任茂賓,王宇新,許莉;燃料電池流場板新材料的研究[J];材料導報;2002年09期

2 武濤,鄭永平,黃正宏,沈萬慈,康飛宇;柔性石墨雙極板透氣性的研究[J];材料科學與工程學報;2005年02期

3 郝德利,韓立明,薛金生,平曉山,劉崇剛;質(zhì)子交換膜燃料電池技術進展[J];電源技術;2001年06期

4 侯明;衣寶廉;;燃料電池技術發(fā)展現(xiàn)狀[J];電源技術;2008年10期

5 孫從征;管從勝;秦敬玉;丁濤;;質(zhì)子交換膜燃料電池用鋁合金雙極板研究[J];腐蝕科學與防護技術;2008年01期

6 李冬杰;陸君;王宇新;;PEMFC用石墨/酚醛樹脂復合板的膨脹石墨表面改性[J];化工學報;2008年09期

7 施濤;馬海艷;高山;;燃料電池發(fā)電技術介紹[J];江蘇電機工程;2006年04期

本文編號：1411151