Monoatomic Metal Doped Nanomaterials for Hydrogen Production and Storage
Author(s)
Primary Supervisor
Nguyen, Nam-Trung
Other Supervisors
Yan, Xuecheng
Ouyang, Liuzhang
Year published
2022-11-09
Metadata
Show full item recordAbstract
Hydrogen production and storage play a critical role in energy transformation from fossil fuels to green energy. To realize the carbon neutralization target by increasing the competitiveness of hydrogen as an energy vector, production and storage of hydrogen must be made more efficient, safer, and cheaper, which is essential for future energy security and economic development.
Water splitting via electrolysis holds great promise for hydrogen production, due to its simplicity, sustainability, and high purity for industrial hydrogen production. Recently, despite tremendous efforts have been devoted, platinum (Pt)-based catalysts ...
View more >Hydrogen production and storage play a critical role in energy transformation from fossil fuels to green energy. To realize the carbon neutralization target by increasing the competitiveness of hydrogen as an energy vector, production and storage of hydrogen must be made more efficient, safer, and cheaper, which is essential for future energy security and economic development. Water splitting via electrolysis holds great promise for hydrogen production, due to its simplicity, sustainability, and high purity for industrial hydrogen production. Recently, despite tremendous efforts have been devoted, platinum (Pt)-based catalysts are still considered to be the most effective electrocatalysts for hydrogen evolution reaction (HER). However, the high cost and low reserves of platinum-based catalysts greatly limit their commercial application. To make hydrogen derived from water splitting more cost-competitive, it is thus highly desirable to exploit low-cost, highly efficient electrocatalysts to replace the expensive Pt-based catalysts. Furthermore, after hydrogen production, the gaseous hydrogen needs to be stored safely and efficiently for utilization by end-users. The current mainstream methods of solid-state hydrogen storage including molecular physisorption and atomic chemisorption, both possess either too high or too low enthalpy of hydrogen adsorption, which are not suitable for practical application. The ideal hydrogen storage materials should be reversibly ab-/desorbing hydrogen under mild temperatures with high hydrogen capacities. To this end, it is extremely essential to design and construct new solid-state hydrogen storage materials at atomic levels. Recently, the atomic metal-site (AMS) nanomaterials are found to be promising catalysts and solid-state media for both the H2 production and storage, which is not only ascribed to the maximized atomic metals utilization but also the unique electronic structure of various metal-site coordination motifs at atomic scales. The aim of this project is to develop efficient and inexpensive AMS nanomaterials that are expected to create new knowledge of atomic interface catalysis and develop practical applications of solid-state hydrogen storage materials, reducing carbon dioxide emissions and alleviating the air pollution. In summary, this thesis mainly focusses on designing and fabricating cost-effective, efficient , and scalable AMS nanomaterials for both hydrogen production and storage, and the reaction mechanisms of atomic metal sites in hydrogen production and storage are also systematically studied.
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View more >Hydrogen production and storage play a critical role in energy transformation from fossil fuels to green energy. To realize the carbon neutralization target by increasing the competitiveness of hydrogen as an energy vector, production and storage of hydrogen must be made more efficient, safer, and cheaper, which is essential for future energy security and economic development. Water splitting via electrolysis holds great promise for hydrogen production, due to its simplicity, sustainability, and high purity for industrial hydrogen production. Recently, despite tremendous efforts have been devoted, platinum (Pt)-based catalysts are still considered to be the most effective electrocatalysts for hydrogen evolution reaction (HER). However, the high cost and low reserves of platinum-based catalysts greatly limit their commercial application. To make hydrogen derived from water splitting more cost-competitive, it is thus highly desirable to exploit low-cost, highly efficient electrocatalysts to replace the expensive Pt-based catalysts. Furthermore, after hydrogen production, the gaseous hydrogen needs to be stored safely and efficiently for utilization by end-users. The current mainstream methods of solid-state hydrogen storage including molecular physisorption and atomic chemisorption, both possess either too high or too low enthalpy of hydrogen adsorption, which are not suitable for practical application. The ideal hydrogen storage materials should be reversibly ab-/desorbing hydrogen under mild temperatures with high hydrogen capacities. To this end, it is extremely essential to design and construct new solid-state hydrogen storage materials at atomic levels. Recently, the atomic metal-site (AMS) nanomaterials are found to be promising catalysts and solid-state media for both the H2 production and storage, which is not only ascribed to the maximized atomic metals utilization but also the unique electronic structure of various metal-site coordination motifs at atomic scales. The aim of this project is to develop efficient and inexpensive AMS nanomaterials that are expected to create new knowledge of atomic interface catalysis and develop practical applications of solid-state hydrogen storage materials, reducing carbon dioxide emissions and alleviating the air pollution. In summary, this thesis mainly focusses on designing and fabricating cost-effective, efficient , and scalable AMS nanomaterials for both hydrogen production and storage, and the reaction mechanisms of atomic metal sites in hydrogen production and storage are also systematically studied.
View less >
Thesis Type
Thesis (PhD Doctorate)
Degree Program
Doctor of Philosophy (PhD)
School
School of Environment and Sc
Copyright Statement
The author owns the copyright in this thesis, unless stated otherwise.
Subject
hydrogen production
hydrogen storage
green energy
monoatomic metal doped nanomaterials