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1、┊┊┊┊┊┊┊┊┊┊┊┊┊裝┊┊┊┊┊訂┊┊┊┊┊線┊┊┊┊┊┊┊┊┊┊┊┊┊安徽工業(yè)大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)金屬氟化物對(duì)LiAlH4吸放氫性能和機(jī)制影響的研究摘 要眾所周知，在整個(gè)氫能的應(yīng)用系統(tǒng)中，儲(chǔ)氫技術(shù)是最關(guān)鍵的環(huán)節(jié)，因此高性能儲(chǔ)氫材料的研發(fā)是氫能安全高效應(yīng)用的前提。本文通過(guò)機(jī)械球磨的方法制備了LiAlH4–10%MgF2儲(chǔ)氫體系，然后利用壓力–組成–溫度（P–C–T）測(cè)試儀測(cè)試了該體系的儲(chǔ)氫性能。同時(shí)，通過(guò)X射線衍射（XRD）方法對(duì)球磨產(chǎn)物及吸放氫產(chǎn)物的相結(jié)構(gòu)進(jìn)行了分析，探討了該體系吸放氫性能改善的微觀機(jī)制。研究結(jié)果表明，LiAlH4–10%MgF2體系的儲(chǔ)氫性
2、能遠(yuǎn)遠(yuǎn)優(yōu)于純LiAlH4。該體系在200oC溫度下能快速放氫，很短時(shí)間內(nèi)放氫過(guò)程基本完成且起始放氫溫度較純LiAlH4體系要低很多，既使在150oC溫度下，該體系也有很好的放氫效果，說(shuō)明催化劑MgF2對(duì)LiAlH4有良好的催化作用。此外，機(jī)械球磨也可能對(duì)LiAlH4–10%MgF2體系的吸放氫有很大的促進(jìn)作用，加速了LiAlH4的分解。關(guān)鍵詞：儲(chǔ)氫材料；LiAlH4；球磨；儲(chǔ)氫性能共2頁(yè)第i頁(yè)┊┊┊┊┊┊┊┊┊┊┊┊┊裝┊┊┊┊┊訂┊┊┊┊┊線┊┊┊┊┊┊┊┊┊┊┊┊┊安徽工業(yè)大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)Theeffectofmetalfluorideonthehydrog
3、ende-/absorptionpropertiesandmechanismofLiAlH4AbstractItiswellknownthatthehydrogenstoragetechnologyisthemostcriticalaspectinthewholesystemoftheapplicationofhydrogenenergy.Therefore,thedevelopmentofhigh-performancehydrogenstoragematerialsisapremiseforthesafeandefficientapplicationofhydroge
4、nenergy.Inthisthesis,theLiAlH4–10%MgF2hydrogenstoragesystemwaspreparedbyballmilling.ThenitshydrogenstoragepropertywastestedbyaPressure–Composition–Temperature(P–C–T)apparatus.Meanwhile,thephasecomponentoftheball-milledandde-/hydrogenatedproductswasanalyzedbyX-raydiffraction(XRD).Finally,t
5、hemechanismcontributingtotheimprovementofthehydrogenstoragepropertywasdiscussed.TheresultsshowthattheLiAlH4–10%MgF2systemhasanimprovedhydrogenstoragepropertyascomparedwithpureLiAlH4.TheLiAlH4–10%MgF2systemcanrapidlyreleasehydrogenatthetemperatureof200oC,theprogressofreleasedhydrogenwascom
6、pletedinaveryshorttimeandthelowesttemperatureofhydrogenreleaseismuchlowerthanpureLiAlH4.Thesystemalsohasaveryperfectedhydrogenstoragepropertyat150oC,indicatingthatMgF2actasagoodcatalystforLiAlH4.Inaddition,ballmillingmaybehasagreatimpactonthehydrogenstoragepropertyoftheLiAlH4–10%MgF2syste
7、m,itcanpromoteandacceleratethedecompositionofLiAlH4possibly.KeyWords：Hydrogenstoragematerial;LiAlH4;Ballmilling;Hydrogenstorageproperty朗讀顯示對(duì)應(yīng)的拉丁字符的拼音字典共2頁(yè)第i頁(yè)┊┊┊┊┊┊┊┊┊┊┊┊┊裝┊┊┊┊┊訂┊┊┊┊┊線┊┊┊┊┊┊┊┊┊┊┊┊┊安徽工業(yè)大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)目 錄摘 要iAbstractii引 言11文獻(xiàn)綜述21.1氫能21.1.1氫氣的制備技術(shù)進(jìn)展21.1.2
