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

  更多相關(guān)文章： 雙極板 膨脹石墨 炭氣凝膠 熱塑性酚醛樹(shù)脂

【摘要】：質(zhì)子交換膜燃料電池是一種能量轉(zhuǎn)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(zhuǎn)化率。以氫作燃料、以氧作氧化劑，且在低溫下即可運(yùn)行，所以對(duì)環(huán)境污染較小。質(zhì)子交換膜燃料電池應(yīng)用廣泛，不僅可以作為汽車(chē)、船舶的動(dòng)力源，而且可以作為小型的移動(dòng)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(shí)驗(yàn)體系首先制備反應(yīng)原料，制備實(shí)驗(yàn)所需的碳填料球型炭氣凝膠、膨脹石墨、熱塑性酚醛樹(shù)脂。分別對(duì)原料進(jìn)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(cè)試和結(jié)構(gòu)表征。 其次，分別采用熔融混合法和吸附復(fù)合法制備了膨脹石墨基復(fù)合材料雙極板，熔融混合法以膨脹石墨和粉末狀酚醛樹(shù)脂為原料進(jìn)行直接混合，經(jīng)過(guò)粗混、球磨混合、模壓固化，混合工藝操作簡(jiǎn)單。吸附復(fù)合法以膨脹石墨和熱塑性酚醛樹(shù)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(shí)驗(yàn)結(jié)果證明不同制備工藝、不同含量的原料配比對(duì)復(fù)合材料雙極板有一定的影響。結(jié)果顯示吸附復(fù)合法制備的膨脹石墨基復(fù)合材料雙極板的性能比熔融混合工藝好，當(dāng)樹(shù)脂含量在35~50wt.%時(shí)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(fù)合材料雙極板，并對(duì)其進(jìn)行相關(guān)的性能測(cè)試和結(jié)構(gòu)表征。性能測(cè)試主要包括復(fù)合材料及改性復(fù)合材料的抗折強(qiáng)度測(cè)試、電導(dǎo)率大小測(cè)試。實(shí)驗(yàn)相關(guān)數(shù)據(jù)表明碳填料球型炭氣凝膠的添加對(duì)膨脹石墨基雙極板的性能有一定的提高作用，增大了復(fù)合材料的電導(dǎo)率和機(jī)械強(qiáng)度，，降低了復(fù)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(fù)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(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM911.4;O613.71

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 任茂賓,王宇新,許莉;燃料電池流場(chǎng)板新材料的研究[J];材料導(dǎo)報(bào);2002年09期

2 武濤,鄭永平,黃正宏,沈萬(wàn)慈,康飛宇;柔性石墨雙極板透氣性的研究[J];材料科學(xué)與工程學(xué)報(bào);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(shù)進(jìn)展[J];電源技術(shù);2001年06期

4 侯明;衣寶廉;;燃料電池技術(shù)發(fā)展現(xiàn)狀[J];電源技術(shù);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(xué)與防護(hù)技術(shù);2008年01期

6 李冬杰;陸君;王宇新;;PEMFC用石墨/酚醛樹(shù)脂復(fù)合板的膨脹石墨表面改性[J];化工學(xué)報(bào);2008年09期

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

本文編號(hào)：1411151