Synthesis of Hexagonal Perovskites for Application in Next Generation Ceramic Fuel Cells

To combat climate change and achieve net zero emissions by 2050, it is predicted that one third of the UK’s energy consumption must be hydrogen-based. Fuel cells convert chemical energy directly into electrical energy with high efficiency and low emission of pollutants. In a fuel cell the reaction between hydrogen and oxygen produces water and electricity and as such provides a clean alternative to fossil fuels. The solid oxide fuel cell (SOFC) is highly efficient, stable, and operates over a wide temperature range (650 – 800 degrees C). Applications include auxiliary power units in cars and heat engine energy recovery devices. In order to reduce system costs, it is highly desirable to find new materials which exhibit significant ionic conductivity at lower temperatures (< 650 degrees C).  

We have recently identified a new oxide ion and proton conductor Ba₇Nb₄MoO₂₀, which is the first hexagonal perovskite to exhibit significant mixed oxide ion and proton conductivity at 600 degrees C. This opens up new horizons in the design of lower temperature solid oxide fuel cell electrolytes. This project seeks to determine the design rules for optimising the ionic conductivity of Ba₇Nb₄MoO₂₀ and to discover further new hexagonal perovskites that exhibit significant oxide ion conductivity.

The materials will be synthesised via conventional solid state chemistry techniques and analysed by powder X-ray and neutron diffraction, AC impedance, and thermogravimetric analysis.

There will also be the opportunity to attend conferences and training courses.

Essential background of student:

The successful candidate should have, or expect to have, an Honours Degree at 2.1 or above (or equivalent) in Chemistry or cognate discipline.

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APPLICATION PROCEDURE:

• Formal applications can be completed online: https://www.abdn.ac.uk/pgap/login.php
• You should apply for Degree of Doctor of Philosophy in Chemistry to ensure your application is passed to the correct team.
• Please clearly note the name of the supervisor and project title on the application form. If you do not mention the project title and the supervisor on your application it will not be considered for the studentship.
• Please include a cover letter specific to the project you are applying for, an up-to-date copy of your academic CV, and relevant educational certificates and transcripts (original language and officially translated into English).
• Please note: you DO NOT need to provide a research proposal with this application
• General application enquiries can be made to [Email Address Removed]