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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 何國川(Kuo-Chuan Ho) | |
dc.contributor.author | Yi-June Huang | en |
dc.contributor.author | 黃奕鈞 | zh_TW |
dc.date.accessioned | 2021-06-17T08:06:58Z | - |
dc.date.available | 2021-08-20 | |
dc.date.copyright | 2019-08-20 | |
dc.date.issued | 2019 | |
dc.date.submitted | 2019-08-19 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/73624 | - |
dc.description.abstract | 本研究論文主要針對無”白金”對電極進行系統性的開發,與設計新型不含”透明導電氧化基材”,應用於低成本、高效率之染料敏化太陽能電池。本研究論文主要可分為兩大部分:(1)無白金對電極(第三章和第四章);(2)無白金和無透明導電氧化基材對電極(第五章和第六章)。
無白金對電極之開發主要目的為降低染敏電池之製造成本,透過簡單、非真空、低成本的製程製備多種電催化觸媒材料,用以完全取代昂貴的白金材料。因此,本研究論文首先以碘系統電解質為標準,進行三大類的無白金複合對電極之開發。(一)過渡金屬化合物型:包含第三章中的二硒化鈷/三氧硒化鈷之奈米方體、奈米棒狀、奈米顆粒;第四章中的二硒化鈷/三氧硒化鈷之複合奈米海膽狀結構。(二) 過渡金屬/導電高分子型:包含硒化鉬奈米片/PEDOT:PSS複合薄膜於第五章,可提供高表面積、快速電解質滲透、良好的附著力、快速碘離子還原反應。(三) 碳材型:純碳氣凝膠於第六章被討論,該材料被前驅物間苯二酚(R)/甲醛(F)和間苯二酚(R)/碳酸鈉(C)的摩耳比控制比表面積。無白金和無透明導電氧化基材對電極中,鈦板與碳氣凝膠用來取代透明導電氧化基材,因為它們的低成本、容易製備與易量產化,(一)鈦板與硒化鉬奈米片/PEDOT:PSS複合薄膜搭配應用於染敏中具有8.51 ± 0.05%的效率,高於白金於鈦板上的效率8.21 ± 0.02%。(二)碳氣凝膠取代整個傳統對電極 (白金/透明導電氧化層/玻璃基材),該染敏電池與CA-C CE搭配下,有著效率9.08 ± 0.01%,高於其他碳氣凝膠。總而言之,本研究論文開發三種無白金複合奈米薄膜:二硒化鈷/三氧硒化鈷、硒化鉬奈米片/PEDOT:PSS、碳氣凝膠,為可取代白金之替代材料,因為他們皆具有良好的催化碘還原能力、低成本、簡易製程、易於大面積製備等特性。 | zh_TW |
dc.description.abstract | This dissertation aimed to systematically study Pt-free and TCO-free counter electrodes (CEs) with low-costs and highly cell efficiencies (η’s). This dissertation is divided into two parts: (1) Pt-free CEs (Chapter 3 and Chapter 4) and (2) Pt-free and TCO-free CEs (Chapter 5 and Chapter 6).
In the case of Pt-free CEs, we aim to reduce the costs of the DSSCs using various electro-catalysts for completely replacing the expensive Pt via the simple, non-vacuum, and low-cost fabrication processes. Accordingly, three types of Pt-free composite films were studied using a standard iodide electrolyte. (I) Transition metallic compound-type CEs, i.e. CoSe2/CoSeO3 with nanocube (NC), nanorod (NR), and nanoparticle (NP) structures in Chapter 3, the composite films of CoSe2/CoSeO3 with hierarchical urchin-like structure in Chapter 4, were indivitually investigated. In the composite film, the different nanostructures were separately used to provide attractive electro-catalytic abilities and large active areas for I3- reduction. (II) Transition metallic and conducting polymer type CEs, i.e. MoSe2 NS/PEDOT:PSS in Chapter 5, were investigated to provide large surface area, fast eletrolyte penetration, well adhesion, and rapid reaction rate for I3- reduction. (III) Carbonaceous-type CEs, i.e. pristine monolithic carbon aerogel (CA-O, CA-Q, CA-F, CA-C, and CA-G) in Chapter 6, were investigated by controlled resorcinol (R)/formaldehyde (F) and resorcinol (R)/sodium carbonate (C) molar ratios. In the case of Pt-free and TCO-free CEs. In the case of Pt-free and TCO-free CEs, the classic TCO substrate is replaced by Ti foil and carbon aerogel for low-cost, simple preparation process, and large-scale production. (I) Ti foil substrate collocate with MoSe2 NS/PEDOT:PSS, which presents a higher η of 8.51 ± 0.05%, as compared to a lower η of 8.21 ± 0.02% using the Pt-coated Ti foil CE. (II) Carbon aerogel replace traditional CEs based on the Pt/FTO/glass in DSSCs. The DSSCs using the as-prepared CA-C CE gave the best η of 9.08 ± 0.01%, among all the CA CEs. In brief, this dissertation explores three Pt-free composite films of CoSe2/CoSeO3, MoSe2 NS/PEDOT:PSS, and CA are a promising substitutions of Pt due to their outstanding properties, i.e., good electro-catalytic ability for I3– reduction, low-cost, simple preparation process, and easy for large-scale production. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T08:06:58Z (GMT). No. of bitstreams: 1 ntu-108-D03524005-1.pdf: 9609589 bytes, checksum: 4d167a82e08bb59d8e7e899868371c29 (MD5) Previous issue date: 2019 | en |
dc.description.tableofcontents | Table of Contents
中文摘要 I Abstract II Table of Contents III List of Tables VI List of Figures VIII Nonmenclatures XIII Chapter 1 Introduction 1 1-1 Background of DSSCs 1 1-2 Mechanism of DSSCs 3 1-3 Sun light and photovoltaic performance of solar cells 5 1-4 Counter electrodes in DSSCs 7 1-4-1 Transition metallic compound-type 9 1-4-2 Conducting polymer-type 13 1-4-3 Carbonaceous-type 16 1-5 Motivation 20 Chapter 2 Experimental 25 2-1 Materials 25 2-2 Fabrication of photoanodes 26 2-3 Fabrication of counter electrodes 28 2-4 Preparation of electrolytes and DSSC assembly 30 2-5 Analytical techniques 31 2-5-1 Morphology, optical, and electrical properties 31 2-5-2 Photovoltaic performance 31 2-5-3 Electrochemical properties 32 Chapter 3 Microemulsion-controlled synthesis of CoSe2/CoSeO3 composite crystals for electrocatalysis in dye-sensitized solar cells 36 3-1 Abstract 36 3-2 Introduction 36 3-3 Results and discussions 39 3-3-1 Phase behavior 39 3-3-2 FE-SEM analyses 40 3-3-3 X-ray diffraction patterns and X-ray photoelectron spectra 42 3-3-4 Photovoltaic performance 43 3-3-5 Cyclic voltammetry 47 3-3-6 Tafel polarization curves and electrochemical impedance spectra 49 3-3-7 Dim light 51 3-4 Summary 52 Chapter 4 One step synthesized hierarchical urchin-like structure CoSe2/CoSeO3 electro-catalysts for dye-sensitized solar cells: up to 19% at dim light illumination 54 4-1 Abstract 54 4-2 Introduction 54 4-3 Results and discussions 58 4-3-1 FE-SEM analyses 58 4-3-2 X-ray diffraction patterns and X-ray photoelectron spectra 59 4-3-3 Photovoltaic performance 60 4-3-4 Cyclic voltammetry 63 4-3-5 Electrochemical impedance spectra and Tafel polarization curves 65 4-3-6 Dim light 67 4-4 Summary 69 Chapter 5 MoSe2 nanosheet/poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) composite film as a Pt-free counter electrode for dye-sensitized solar cells 70 5-1 Abstract 70 5-2 Introduction 71 5-3 Results and discussions 72 5-3-1 FE-SEM and EDX analyses 72 5-3-2 Photovoltaic performance and IPCE spectra of DSSCs 76 5-3-3 Cyclic voltammetry 79 5-3-4 Rotating disk electrode analysis 81 5-3-5 Tafel polarization curves and electrochemical impedance spectra 83 5-3-6 Flexible counter electrode 85 5-4 Summary 88 Chapter 6 A Pt-free pristine monolithic carbon aerogel counter electrode for dye-sensitized solar cells: up to 20% at dim light illumination 90 6-1 Abstract 90 6-2 Introduction 90 6-3 Results and discussions 92 6-3-1 FE-SEM analysis 92 6-3-2 Brunauer-Emmett-Teller analysis 94 6-3-3 Photovoltaic performance 95 6-3-4 Cyclic voltammetry 99 6-3-5 Electrochemical impedance spectroscopy and Tafel polarization curves 100 6-3-6 Dim light 101 6-4 Summary 103 Chapter 7 Conclusions and suggestions 104 7-1 Conclusions 104 7-2 Suggestions 105 References 106 Appendix Curriculum vitae 127 | |
dc.language.iso | en | |
dc.title | 無白金奈米電觸媒用於染料敏化太陽能電池 | zh_TW |
dc.title | Pt-Free Nanostructural Electrocatalysts for
Dye-Sensitized Solar Cells | en |
dc.type | Thesis | |
dc.date.schoolyear | 107-2 | |
dc.description.degree | 博士 | |
dc.contributor.oralexamcommittee | 徐振哲(Cheng-Che(Jerry),戴子安(Chi-An Dai),陳建彰(Jian-Zhang Chen),林義?(Yi-Feng Lin) | |
dc.subject.keyword | 對電極,染料敏化太陽能電池,電觸媒,電解質,無白金,無透明氧化金屬, | zh_TW |
dc.subject.keyword | Counter electrodes,dye-sensitized solar cells,electro-catalyst,electrolyte,Pt-free,TCO-free, | en |
dc.relation.page | 131 | |
dc.identifier.doi | 10.6342/NTU201903935 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2019-08-19 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 化學工程學研究所 | zh_TW |
顯示於系所單位: | 化學工程學系 |
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