負(fù)載于摻雜載體的過(guò)渡金屬氧化物及磷化物電催化產(chǎn)氧催化劑的研究
發(fā)布時(shí)間:2021-10-06 18:53
電催化反應(yīng)對(duì)很多可再生能源技術(shù)至關(guān)重要,例如用于能量轉(zhuǎn)換和儲(chǔ)存的燃料電池、金屬-空氣電池,以及產(chǎn)生高純氫能的電解水技術(shù)等。這些能量裝置/體系發(fā)生的反應(yīng)主要是氧還原反應(yīng)(ORR)、析氧反應(yīng)(OER)和析氫反應(yīng)(HER),但是這些多步和多電子電化學(xué)反應(yīng)通常具有較高的過(guò)電勢(shì)和緩慢的動(dòng)力學(xué),因此需要催化劑來(lái)降低反應(yīng)能壘,降低過(guò)程能耗,提高能量轉(zhuǎn)化效率。目前被廣泛報(bào)道的性能優(yōu)異的催化劑大多是貴金屬材料(釕、銥、鉑及其氧化物等),但由于貴金屬在地球含量的匱乏,限制了其在工業(yè)上的廣泛應(yīng)用。另外,這些貴金屬催化劑還存在著易中毒、選擇性和穩(wěn)定性較差等一或多方面問(wèn)題,進(jìn)一步降低了其整體效用。理想的電催化劑應(yīng)具有以下特點(diǎn):易于制備,穩(wěn)定,成本低,并且最好具有雙功能或者多功能催化能力。同時(shí)具有產(chǎn)氧和氧還原雙功能的催化劑就可以大大簡(jiǎn)化再生電池(再生金屬-空氣電池和再生燃料電池等)的生產(chǎn)工藝,促進(jìn)高效的能量轉(zhuǎn)化和儲(chǔ)存;谝陨戏治,本論文設(shè)計(jì)了兩種具有優(yōu)異的ORR單功能和優(yōu)異ORR/OER雙功能性質(zhì)的鈷基催化劑。首先,利用熱解Co(OH)2和三聚氰胺(HNO3處理的)的...
【文章來(lái)源】:天津大學(xué)天津市 211工程院校 985工程院校 教育部直屬院校
【文章頁(yè)數(shù)】:60 頁(yè)
【學(xué)位級(jí)別】:碩士
【文章目錄】:
摘要
abstract
Chapter 1 Introduction
1.1 The Energy Problem
1.2 Hydrogen Economy
1.3 Hydrogen Production
1.4 Electrocatalysis
1.4.1 Electrode kinetics
1.4.2 Factors of Electrocatalysis
1.5 Hydrogen Evolution Reaction
1.6 Oxygen Evolution Reaction
1.7 Oxygen Reduction Reaction
1.8 Fuel Cells
1.8.1 Types of Fuel Cells
1.8.2 Possible Applications
1.8.3 Catalysts in Fuel Cells
Chapter 2 Co_2P/Co@Nitrogen-doped carbon as High Performance ORR/OERBifunctional Electrocatalyst
2.1 Introduction
2.2 Experimental Procedure
2.3 Results and Discussion
2.4 Conclusions
Chapter 3 High-Valence-State Ni O/Co_3O_4 Nanoparticles on Nitrogen-Doped Carbon forOxygen Evolution at Low Overpotential
3.1 Introduction
3.2 Experimental Procedure
3.3 Results and Discussion
3.4 Characterizations
3.5 Conclusions
Chapter 4 Conclusions and Future Perspectives
4.1 Conclusions
4.2 Outlook
Appendix
References
List of Published and Submitted Papers
Acknowledgement
【參考文獻(xiàn)】:
期刊論文
[1]Homogeneously dispersed multimetal oxygen-evolving catalysts[J]. Science Foundation in China. 2016(03)
本文編號(hào):3420564
【文章來(lái)源】:天津大學(xué)天津市 211工程院校 985工程院校 教育部直屬院校
【文章頁(yè)數(shù)】:60 頁(yè)
【學(xué)位級(jí)別】:碩士
【文章目錄】:
摘要
abstract
Chapter 1 Introduction
1.1 The Energy Problem
1.2 Hydrogen Economy
1.3 Hydrogen Production
1.4 Electrocatalysis
1.4.1 Electrode kinetics
1.4.2 Factors of Electrocatalysis
1.5 Hydrogen Evolution Reaction
1.6 Oxygen Evolution Reaction
1.7 Oxygen Reduction Reaction
1.8 Fuel Cells
1.8.1 Types of Fuel Cells
1.8.2 Possible Applications
1.8.3 Catalysts in Fuel Cells
Chapter 2 Co_2P/Co@Nitrogen-doped carbon as High Performance ORR/OERBifunctional Electrocatalyst
2.1 Introduction
2.2 Experimental Procedure
2.3 Results and Discussion
2.4 Conclusions
Chapter 3 High-Valence-State Ni O/Co_3O_4 Nanoparticles on Nitrogen-Doped Carbon forOxygen Evolution at Low Overpotential
3.1 Introduction
3.2 Experimental Procedure
3.3 Results and Discussion
3.4 Characterizations
3.5 Conclusions
Chapter 4 Conclusions and Future Perspectives
4.1 Conclusions
4.2 Outlook
Appendix
References
List of Published and Submitted Papers
Acknowledgement
【參考文獻(xiàn)】:
期刊論文
[1]Homogeneously dispersed multimetal oxygen-evolving catalysts[J]. Science Foundation in China. 2016(03)
本文編號(hào):3420564
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