以La0.8Sr0.2MnO3-δ為固態氧化物燃料電池陰極材料行氮氧化物還原之研究

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研究生：	蕭一川 Hsioa, I-Chuan
論文名稱：	以La0.8Sr0.2MnO3-δ為固態氧化物燃料電池陰極材料行氮氧化物還原之研究 La0.8Sr0.2MnO3-δ as Solid Oxide Fuel Cell Cathode Material on Reduction of Nitric Oxide
指導教授：	黃大仁 Huang, Ta-Jen
口試委員:
學位類別：	碩士 Master
系所名稱：	工學院 - 化學工程學系 Department of Chemical Engineering
論文出版年：	2010
畢業學年度：	98
語文別：	中文
論文頁數：	103
中文關鍵詞：	固態氧化物燃料電池、陰極材料、LSM 、一氧化氮、V2O5
相關次數：	點閱：2 下載：0
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本研究以鈣鈦礦結構導氧離子材料La0.8Sr0.2MnO3-δ(LSM)，搭配具有導氧離子性質之材料氧化釓參雜氧化鈰(Ce0.9Gd0.1O2-x, GDC)作為固態氧化物燃料電池之複合式陰極材料，以氧氣(O2)、一氧化氮(NO)、水氣(H2O)與二氧化碳(CO2)等混成氣體模擬工業廢氣或汽機車廢氣組成之混合氣作為陰極進料，對於污染物一氧化氮(NO)進行還原減量之工作，從中分析電池電性以及出口氣體組成。此LSM-GDC為陰極材料電池以20% 氧氣為陰極氣體為進料於800℃下，電池之最大能量密度(maximum power density)可達63.8 mW/cm2。
於陰極材料LSM-GDC中含浸活性觸媒V2O5對於陰極進行改質，可大幅度提昇電池之最大能量密度至119.5 mW/cm2，以一氧化氮為陰極氣體之催化活性亦大幅度提昇。對於模擬工業廢氣或汽機車廢氣組成之混合氣中，分別分析其中水氣、氧氣濃度、二氧化碳濃度以及操作電壓對於一氧化氮轉化率之影響。以一氧化氮混合氦氣作為陰極氣體進料，對於出口氣體進行分析，藉此探討一氧化氮於固態氧化物燃料電池陰極側之反應機制。

第一章 緒論……………………………………………………………1
第二章 文獻回顧………………………………………………………3
2-1  燃料電池簡介………………………………………………3
2-2  固態氧化物燃料電池………………………………………5
2-3固態氧化物燃料電池運作之原理……………………………7
2-4  固態氧化物燃料電池之電解質材料………………………9
2-4-1  立方螢石型結構……………………………………10
2-4-2  鈣鈦礦結構…………………………………………11
2-5  固態氧化物燃料電池陽極材料……………………………13
2-6  固態氧化物燃料電池陰極材料……………………………14
2-6-1  陰極鈣鈦礦材料La0.8Sr0.2MnO3−δ（LSM）……………17
2-7  氮氧化物(NOx)之減量處理技術 …………………………18
2-7-1  觸媒催化氮氧化物之方法…………………………19
2-7-2 混合導體分解氮氧化物 ……………………………25
2-7-3 以固態氧化物燃料電池發電方式處理NOx…………32
第三章 研究規劃………………………………………………………34
3-1  研究動機……………………………………………………34
3-2  研究規劃……………………………………………………35
第四章 實驗方法與步驟………………………………………………37
4-1 實驗藥品 ……………………………………………………37
4-2 製備方法 ……………………………………………………39
4-2-1  La0.8Sr0.2MnO3-δ (LSM)  ……………………………39
4-2-2  Ce0.9Gd0.1O2-x , Gadolinia doped Ceria, GDC……40
4-2-3  陽極支撐型電池之材料……………………………41
4-2-4  復合陰極材料之製備………………………………41
4-2-5  旋轉塗佈機陰極漿料之製備………………………42
4-3  實驗儀器……………………………………………………43
4-4  實驗方法……………………………………………………44
4-4-1  電池單元製備………………………………………44
4-4-2  電池性能測試………………………………………46
第五章 實驗結果與討論………………………………………………49
5-1  粉體製備之分析……………………………………………50
5-2  掃描式電子顯微鏡
(SEM, Scanning Electron Microscopy) ………………52
5-3  電池效能……………………………………………………53
5-3-1 LSM-GDC為陰極材料通入模擬空氣…………………53
5-4固態氧化物燃料電池以發電方式處理氮氧化物……………56
5-4-1  以固態氧化物燃料電池處理模擬廢氣……………57
5-5  陰極材料LSM-GDC含浸活性金屬V2O5之影響……………63
5-5-1  陰極通入NO電池效能……………………………68
5-5-2  含浸V2O5之LSM-GDC與未含浸之LSM-GDC電池效能比較…………………………………………………72
5-5-3  模擬廢氣組成………………………………………74
5-6  廢氣組成之成份對於NO轉化率及電池效能之影響 ……79
5-6-1  水氣…………………………………………………79
5-6-2  氧氣…………………………………………………84
5-6-3  二氧化碳……………………………………………86
5-6-4  電壓…………………………………………………87
5-6-5  廢氣對於電池效能之影響…………………………89
5-7  NO反應機制…………………………………………………92
第六章 結論……………………………………………………………96
第七章 未來工作………………………………………………………97
第八章 參考文獻………………………………………………………98

                                

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