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Heledd is passionate about understanding how the world works. She read Natural Sciences at the University of Cambridge, studying physics and plant sciences before specializing in chemistry for her BA and MSci. Graduating with first-class honours, her master's project explored formation cycles to optimize metal plating in sodium anode-free batteries. She is now completing her PhD at Oxford as part of a world-leading research team developing lithium-air batteries. Heledd has completed research internships at Nyobolt Ltd and Gaussion Ltd, where she applied advanced electrochemical methods and developed new experimental procedures. Outside the lab, Heledd is a cellist with an ATCL diploma in performance and has performed with the National Youth Orchestra of Wales. She also enjoys countryside walks and jigsaw puzzles.