Jennifer Johnstone-Hack

Dr Jennifer Johnstone-Hack is a Lecturer in Sustainable Materials at the School of Chemical, Materials and Biological Engineering at the University of Sheffield. She joined in 2023 as a Royal Academy of Engineering Research Fellow, focusing on hydrogen and electrochemical device research. Her work bridges materials science, imaging technology, and sustainable energy systems.

• PhD: University College London (2021)
• Postdoctoral Roles: EPSRC Doctoral Prize Fellow (Zinc-Air Batteries), Project Lead on Faraday Institution's LiSTAR Project

Her research explores the relationship between material morphology, performance, and degradation in electrochemical devices. She employs 4D X-ray/neutron CT to study hidden interface reactions in operating/failing devices, aiming to design optimized materials for electrolysers, batteries, and fuel cells.

Key trends in her publications include:

• Operando imaging of electrochemical systems
• Failure mechanism analysis via tomographic methods
• Comparative studies of flow-field designs
• Advancements in hydrogen generation and battery materials

Scientific recognition includes:

• Royal Academy of Engineering Research Fellowship
• EPSRC Doctoral Prize Fellowship

She teaches MAT61021: Energy Generation and Storage, emphasizing practical and sustainable energy solutions through her research insights.