Hỗ trợ TixW1-xO2 cho Platinum: Tăng cường hoạt động và khả năng chống CO trong pin nhiên liệu rượu trực tiếp

Chuyên ngành

Chemical Engineering

Người đăng

Ẩn danh

Thể loại

dissertation

2022

183
0
0

Phí lưu trữ

30 Point

Mục lục chi tiết

PLEDGE

ABSTRACT

TÓM TẮT LUẬN ÁN

ACKNOWLEDGEMENTS

TABLE OF CONTENTS

1. LIST OF TABLES

2. LIST OF FIGURES

3. LIST OF SYMBOLS AND ABBREVIATIONS

4. MOTIVATION OF RESEARCH

5. INTRODUCTION AND LITERATURE REVIEW

5.1. Direct alcohol fuel cells (DAFCs)

5.2. Overview of DAFC technologies

5.3. Research history of direct alcohol fuel cells

5.4. Alcohol electro-oxidation on the Pt nanocatalysts

5.5. Methanol electro-oxidation reaction (MOR) on the Pt surface

5.6. Ethanol electro-oxidation reaction (EOR) on the Pt surface

5.7. Challenges of Pt-based catalyst in direct alcohol fuel cells

5.8. Platinum dissolution and growth

5.9. Non-carbon support for Pt-based electrocatalyst

5.10. Advantages and challenges of non-carbon nanosupport for DAFCs

5.11. State-of-the-art M-doped TiO2 support for alcohol electro-oxidation (AOR)

5.12. Tungsten-doped TiO2 nanosupport for direct alcohol fuel cells

5.13. One-dimensional (1D) Pt-based catalysts for the alcohol electro-oxidation

5.14. Advantages and challenges of 1D Pt-based nanostructures

5.15. Preparation of 1D Pt-based electrocatalysts

5.16. State-of-the-art 1D Pt-based electrocatalysts

5.17. Strategy and research objectives

6. MATERIAL AND EXPERIMENTS

6.1. Fabrication of non-carbon TixW1-xO2 (x = 0.8)

6.2. Fabrication of 20 wt% Pt/TixW1-xO2 (x = 0.8)

6.3. Fabrication of 1D Pt nanowires (NWs) on the Ti0.3O2

6.4. Preparation of 1D-bimetallic Pt3Co NWs on the Ti0.3O2

6.5. X-ray photoelectron spectroscopy (XPS)

6.6. Transmission electron microscopy (TEM)

6.7. Scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDX) mapping measurement

6.8. Brunauer-Emmett-Teller (BET) method

6.9. Electrical conductivity measurement

6.10. Preparation of electrocatalytic ink

6.11. Cyclic voltammetry (CV) test

6.12. Alcohol electro-oxidation reaction (MOR, EOR)

6.13. CO-stripping voltammetry test

6.14. Accelerated durability test (ADT)

7. SYNTHESIS AND CHARACTERIZATION OF THE TixW1-xO2 (x = 0.8) NANOMATERIALS AS ROBUST NON-CARBON SUPPORTS FOR PLATINUM NANOPARTICLES IN DIRECT ETHANOL FUEL CELLS

7.1. Characterization of various TixW1-xO2 (x = 0.8)

7.2. Effect of differential Ti: W ratio on nanostructures

7.3. Effect of differential Ti: W ratio on particle size and morphology

7.4. Effect of differential Ti: W ratio on the surface area

7.5. Effect of differential Ti: W ratio on the electrical conductivity

7.6. Characterization of 20 wt% Pt/TixW1-xO2 (x = 0.8)

7.7. Electrochemical characterization of electrocatalysts

8. ONE-DIMENSIONAL Pt NANOWIRES ON Ti0.3O2 SUPPORT WITH EFFECTIVE ELECTRO-ACTIVITY FOR ALCOHOL ELECTRO-OXIDATION

8.1. Formation of the 1D Pt nanowires on Ti0.3O2

8.2. Effect of reduction times on the growth of 1D Pt nanowires

8.3. Effect of loading amount of Pt on the growth of 1D Pt nanowires

8.4. A proposed mechanism for the formation of 1D Pt NWs/Ti0.3O2

8.5. Characterization of 1D Pt NWs/Ti0.3O2

8.6. Electrochemical characterization of 1D Pt NWs/Ti0.3O2

9. SUPERIOR CO-TOLERANCE AND STABILITY FOR ALCOHOL ELECTRO-OXIDATION REACTION OF 1D-BIMETALLIC PLATINUM-COBALT NANOWIRES ON Ti0.3O2

9.1. Characterization of 1D Pt3Co NWs/Ti0.3O2

9.2. Electrochemical properties of 1D Pt3Co NWs/Ti0.3O2

9.3. Electrochemical properties of 1D Pt3Co NWs/Ti0.3O2 (continued)

10. CONCLUSIONS AND SCIENTIFIC CONTRIBUTION

11. LIST OF PUBLICATIONS

12. LIST OF CONFERENCES

13. LIST OF RESEARCH PROJECTS

The multifunctional tixw1 xo2 x 0 5 0 6 0 7 0 8 support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells