Degradation of atomically dispersed M-N-C carbon catalysts in acidic media. This project aims to provide a clear understanding of the degradation mechanisms of transition metal (M) and nitrogen (N) co-doped carbon (M-N-C) catalysts in acidic media by utilising new model catalysts, standardised degradation tests, comprehensive catalyst characterisation, and machine learning tools to interrogate mechanistic hypotheses and link degradation mechanisms to specific catalyst characteristics. This proje ....Degradation of atomically dispersed M-N-C carbon catalysts in acidic media. This project aims to provide a clear understanding of the degradation mechanisms of transition metal (M) and nitrogen (N) co-doped carbon (M-N-C) catalysts in acidic media by utilising new model catalysts, standardised degradation tests, comprehensive catalyst characterisation, and machine learning tools to interrogate mechanistic hypotheses and link degradation mechanisms to specific catalyst characteristics. This project expects to generate new knowledge on rationally designing robust hydrogen fuel cell catalysts. This will provide significant benefits, such as new knowledge on catalyst degradation, new catalysts for energy conversion applications, and collaborations with the industry to accelerate Australia’s shift to renewable energy.Read moreRead less
Hot carrier cooling mechanisms in nano structures. This project aims to systematically investigate possible mechanisms of hot carrier cooling in nano structures and to identify the most dominant mechanisms. These are important for efficient hot carrier solar cells and thermoelectrics. This project will develop new physics to understand hot carrier dynamics in nano structures. This project is expected to result in photovoltaic systems with a lower balance of system and levelised cost of electrici ....Hot carrier cooling mechanisms in nano structures. This project aims to systematically investigate possible mechanisms of hot carrier cooling in nano structures and to identify the most dominant mechanisms. These are important for efficient hot carrier solar cells and thermoelectrics. This project will develop new physics to understand hot carrier dynamics in nano structures. This project is expected to result in photovoltaic systems with a lower balance of system and levelised cost of electricity compared to conventional technologies. This should boost solar industry, create green jobs and reduce greenhouse gas emissions.Read moreRead less
Enabling technology unlocking full potential of high bandgap chalcopyrite . This project is aimed at solving the fundamental challenges of high bandgap chalcopyrite light-harvesting material to unlock its full potential as the top cell for photovoltaic tandem cell and the photocathode for photoelectrochemical applications. This will be realised by dynamic optimisation of its performance in photovoltaic solar cell device through understanding of its defects origins, enabling defects controlling t ....Enabling technology unlocking full potential of high bandgap chalcopyrite . This project is aimed at solving the fundamental challenges of high bandgap chalcopyrite light-harvesting material to unlock its full potential as the top cell for photovoltaic tandem cell and the photocathode for photoelectrochemical applications. This will be realised by dynamic optimisation of its performance in photovoltaic solar cell device through understanding of its defects origins, enabling defects controlling technologies, and microscopic carrier loss mechanism analysis via systematic macro-to-micro characterisations combined with 3D device simulation. The project completion will reinforce the next-generation tandem cell and photoelectrochemical technologies with the efficient, stable, RoHS-compliant and thin chalcopyrite devices.Read moreRead less
Nitride materials: In the “bond ionicity Goldilocks zone” for solar energy. Progress towards commercial devices for solar-driven hydrogen generation as well as in-situ electricity generation for vehicles is currently hampered by a lack of earth-abundant, stable, non-toxic semiconductor materials that can be fabricated by scalable methods. This project aims to develop the first scalable solution synthesis methods for a new class of earth-abundant Zn-based nitride semiconductor nanocrystals that h ....Nitride materials: In the “bond ionicity Goldilocks zone” for solar energy. Progress towards commercial devices for solar-driven hydrogen generation as well as in-situ electricity generation for vehicles is currently hampered by a lack of earth-abundant, stable, non-toxic semiconductor materials that can be fabricated by scalable methods. This project aims to develop the first scalable solution synthesis methods for a new class of earth-abundant Zn-based nitride semiconductor nanocrystals that have favourable bond ionicity and establish their optoelectronic properties for renewable energy devices for the first time. Flexible solution processing methods will be exploited to tune surface composition, remove defects and create devices to achieve optimised performance in these challenging new nitride material systems.Read moreRead less
Corrosion of heat resisting alloys in steam/hydrogen-rich environment . Hydrogen is a clean fuel for energy future. Its production and utilisation unavoidably involve water vapour and hydrogen at high temperature which is however corrosive to materials used in the system. This project aims to investigate corrosion behaviour of heat resistant alloys in the presence of both hydrogen and water vapour, mechanisms of water transport in oxide scale, and the effect of hydrogen on water vapour corrosion ....Corrosion of heat resisting alloys in steam/hydrogen-rich environment . Hydrogen is a clean fuel for energy future. Its production and utilisation unavoidably involve water vapour and hydrogen at high temperature which is however corrosive to materials used in the system. This project aims to investigate corrosion behaviour of heat resistant alloys in the presence of both hydrogen and water vapour, mechanisms of water transport in oxide scale, and the effect of hydrogen on water vapour corrosion. Alloying effects on corrosion rates will be defined and methods of slowing or preventing water vapour corrosion in the presence of hydrogen will be devised. The results will provide a basis for improved design/selection of heat resisting alloys for hydrogen production and hydrogen utilisation industries.Read moreRead less
Advanced electrocatalysts for ammonia synthesis with validated analysis. Ammonia is one of the most produced chemicals worldwide but current manufacturing industries consume massive amounts of energy and emit harmful greenhouse gases. This project aims to develop a sustainable electrochemical system for ammonia synthesis using electricity and atmospheric nitrogen. A family of porous catalysts with nanoconfined ionic liquids will be developed to drive nitrogen reduction by enhancing the reaction ....Advanced electrocatalysts for ammonia synthesis with validated analysis. Ammonia is one of the most produced chemicals worldwide but current manufacturing industries consume massive amounts of energy and emit harmful greenhouse gases. This project aims to develop a sustainable electrochemical system for ammonia synthesis using electricity and atmospheric nitrogen. A family of porous catalysts with nanoconfined ionic liquids will be developed to drive nitrogen reduction by enhancing the reaction kinetics. Rigorous experimental protocols and novel analytical methods will be developed for quantification of electro-synthesised ammonia. A prototype gas diffusion layer-assisted electrolyser will be demonstrated by coupling with oxygen evolution reactions for selective ammonia synthesis at a reasonable production rate.Read moreRead less
Efficient photovoltaic-electrochemical water splitting for clean hydrogen. This project aims to develop a novel, low cost and high performance monolithic photovoltaic-electrochemical (PV-EC) device for clean hydrogen production. This device tailors and integrates low cost and high performance thin film and tandem photovoltaics for water splitting with the aim of achieving high solar to hydrogen conversion efficiency towards 20%. Earth abundant and stable catalysts will be developed in this proje ....Efficient photovoltaic-electrochemical water splitting for clean hydrogen. This project aims to develop a novel, low cost and high performance monolithic photovoltaic-electrochemical (PV-EC) device for clean hydrogen production. This device tailors and integrates low cost and high performance thin film and tandem photovoltaics for water splitting with the aim of achieving high solar to hydrogen conversion efficiency towards 20%. Earth abundant and stable catalysts will be developed in this project to replace noble based catalysts, as well as novel architectures for electrical contacting, feed-through and catalyst integration in PV-EC devices. These innovations offer high performance and the potential for device costs 2 to 3 orders of magnitude lower than recent world record photoelectrochemical devices. Read moreRead less
Anion Exchange Membrane Water Electrolysis for Clean Hydrogen Production. Low-cost and robust water electrolysis technology is a cornerstone towards the success of the hydrogen economy. This project aims to develop next generation anion exchange membrane water electrolyser technologies for low-cost and high-efficiency clean hydrogen production and renewable energy storage. Novel non-precious transition metal-based catalysts with high intrinsic activity, large surface area and super-hydrophilic s ....Anion Exchange Membrane Water Electrolysis for Clean Hydrogen Production. Low-cost and robust water electrolysis technology is a cornerstone towards the success of the hydrogen economy. This project aims to develop next generation anion exchange membrane water electrolyser technologies for low-cost and high-efficiency clean hydrogen production and renewable energy storage. Novel non-precious transition metal-based catalysts with high intrinsic activity, large surface area and super-hydrophilic surfaces will be developed, and their mechanism and stability within membrane electrode assemblies understood by using operando spectroscopy, electrochemistry and 3D X-ray imaging characterisations. An efficient anion exchange membrane water electrolyser prototype made entirely of non-precious materials is to be devised. Read moreRead less
Energy resolving photodetection through extracting hot carrier photocurrent. The project will develop infrared metallic hot-electron photodetectors for energy and wavelength resolving photodetection. With the varied applications of infrared photodetectors in Australia, the project aims to establish a novel photodiode architecture that harnesses thermal energy through hot-electrons for high speed and broadband photodetection. By enabling energy resolving photodetection, the photodiode will combi ....Energy resolving photodetection through extracting hot carrier photocurrent. The project will develop infrared metallic hot-electron photodetectors for energy and wavelength resolving photodetection. With the varied applications of infrared photodetectors in Australia, the project aims to establish a novel photodiode architecture that harnesses thermal energy through hot-electrons for high speed and broadband photodetection. By enabling energy resolving photodetection, the photodiode will combine research laboratory scale capabilities into a single optical element. Advanced hot-electron absorber materials will be studied. The research outcomes have applications from telecommunications to biotechnology where photodetectors are a critical sensing component, and for metallic hot electrons utilised in photocatalysis.Read moreRead less
Ultrathin III-V Solar Cells via Crack-Assisted Layer Exfoliation. III-V semiconductors are excellent photovoltaic materials with highest demonstrated solar-to-electricity conversion efficiencies, but find limited usage in terrestrial applications due to high material and fabrication costs. This project aims to improve the cost-effectiveness of III-V solar cells by developing ultrathin III-V semiconductors via crack-assisted layer transfer approach and epitaxy-free fabrication via heterojunction ....Ultrathin III-V Solar Cells via Crack-Assisted Layer Exfoliation. III-V semiconductors are excellent photovoltaic materials with highest demonstrated solar-to-electricity conversion efficiencies, but find limited usage in terrestrial applications due to high material and fabrication costs. This project aims to improve the cost-effectiveness of III-V solar cells by developing ultrathin III-V semiconductors via crack-assisted layer transfer approach and epitaxy-free fabrication via heterojunction architectures, paving the way for cost-effective, high-efficiency, flexible solar cells. The expected outcomes include a disruptive technology for integrated photovoltaics, novel contact and passivation materials, as well as new knowledge generated in materials science and optoelectronics disciplines.Read moreRead less