OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4

Water splitting is a sustainable process to generate hydrogen which is a renewable and carbon-free energy source. However, the hydrogen production efficiency is limited by the high overpotential requirement and slow reaction rate of the oxidation evolution reaction (OER), making it critical to impro...

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Main Author: Liu, Qingyi
Other Authors: Xu Zhichuan, Jason
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2023
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Online Access:https://hdl.handle.net/10356/166755
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1667552023-05-13T16:46:19Z OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4 Liu, Qingyi Xu Zhichuan, Jason School of Materials Science and Engineering xuzc@ntu.edu.sg Engineering::Materials Water splitting is a sustainable process to generate hydrogen which is a renewable and carbon-free energy source. However, the hydrogen production efficiency is limited by the high overpotential requirement and slow reaction rate of the oxidation evolution reaction (OER), making it critical to improve the effectiveness of the OER catalysts. Currently, reducing the catalyst particle size is one of the common catalyst modification methods, but the mechanism behind the relationship between the catalyst size and performance (the size effect) is complex and was mainly studied based on lab scale testing rather than the device scale which is closer to the industrial application environment. In this project the CoFe2O4 is chosen as a representative OER catalyst to study the size effect in both three-electrode single cell configurations and the membrane electrode assembly (MEA). The samples were synthesized with different sizes using various methods and were characterized using cyclic voltammetry (CV) and chronopotentiometry (CP) testing. The catalytical performance was then compared through the polarization curves and Tafel plots. The result of this project may provide insights for deeper exploration of fundamentals of the catalytical engineering and development of more effective catalysts. Bachelor of Engineering (Materials Engineering) 2023-05-12T07:45:47Z 2023-05-12T07:45:47Z 2023 Final Year Project (FYP) Liu, Q. (2023). OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/166755 https://hdl.handle.net/10356/166755 en application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
spellingShingle Engineering::Materials
Liu, Qingyi
OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4
description Water splitting is a sustainable process to generate hydrogen which is a renewable and carbon-free energy source. However, the hydrogen production efficiency is limited by the high overpotential requirement and slow reaction rate of the oxidation evolution reaction (OER), making it critical to improve the effectiveness of the OER catalysts. Currently, reducing the catalyst particle size is one of the common catalyst modification methods, but the mechanism behind the relationship between the catalyst size and performance (the size effect) is complex and was mainly studied based on lab scale testing rather than the device scale which is closer to the industrial application environment. In this project the CoFe2O4 is chosen as a representative OER catalyst to study the size effect in both three-electrode single cell configurations and the membrane electrode assembly (MEA). The samples were synthesized with different sizes using various methods and were characterized using cyclic voltammetry (CV) and chronopotentiometry (CP) testing. The catalytical performance was then compared through the polarization curves and Tafel plots. The result of this project may provide insights for deeper exploration of fundamentals of the catalytical engineering and development of more effective catalysts.
author2 Xu Zhichuan, Jason
author_facet Xu Zhichuan, Jason
Liu, Qingyi
format Final Year Project
author Liu, Qingyi
author_sort Liu, Qingyi
title OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4
title_short OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4
title_full OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4
title_fullStr OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4
title_full_unstemmed OER catalyst size effect in lab scale and device scale: an example study on CoFe2O4
title_sort oer catalyst size effect in lab scale and device scale: an example study on cofe2o4
publisher Nanyang Technological University
publishDate 2023
url https://hdl.handle.net/10356/166755
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