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Nina Meddings

Nina Meddings

Higher Research Scientist

Nina is a Higher Research Scientist focused on diagnostic and prognostic measurement techniques for batteries from the lab to commercial scale.

Biography

Nina completed her PhD at the University of Southampton, developing novel cell designs and methods for operando characterisation of anode protection strategies in next-generation lithium batteries. Following this, she carried out post-doctoral research at Imperial College London, working on a new experimental method to evaluate bulk and interfacial lithium transfer in electrode materials, and was concurrently a battery and energy storage expert with Imperial Consultants.

Previously, Nina gained several years’ experience as a senior government analyst after obtaining an MSci from the University of Cambridge. She joined NPL in January 2020.

Nina is a member of the International Society of Electrochemistry.

Areas of interest

Nina’s interests are in developing electrochemical test methods to better understand physical mechanisms, performance and degradation in electrochemical energy storage systems. Her goal in this work is to guide improvements in both new and established battery technologies, and similar devices.

Her current projects include:

  • quality assessment of electric vehicle batteries for second use applications, using electrochemical impedance spectroscopy (EIS)
  • development of standard test protocols for evaluating novel Li-ion cathode materials
  • research and development of novel in situ reference electrodes for Li-ion and Na-ion batteries, allowing accurate identification of anode and cathode contributions to cell behaviour

Selected Publications

1. Application of electrochemical impedance spectroscopy to commercial Li-ion cells: A review, N. Meddings, M. Heinrich, F. Overney, J.-S. Lee, V. Ruiz, E. Napolitano, S. Seitz, G. Hinds, R. Raccichini, M. Gaberšček, J. Park, J. Power Sources, 480, 228742 (2020)

2. A Highly Sensitive Electrochemical Sensor of Polysulfides in Polymer Lithium-Sulfur Batteries, N. Meddings, X. Judez, C.M. Li, N. Garcia-Araez, J. Electrochem. Soc. 167, 080520 (2020)

3. Operando Evaluation of Selectivity and Transference Number of Lithium‐Conductive Membranes, N. Meddings, J.R. Owen, N. Garcia-Araez, ChemElectroChem 6, 1678–1682 (2019)

4. Quantitative Galvanostatic Intermittent Titration Technique for the Analysis of a Model System with Applications in Lithium-Sulfur Batteries, J.W. Dibden, N. Meddings, J.R. Owen, N. Garcia-Araez, ChemElectroChem 5, 445-454 (2017)

5. A simple, fast and accurate in-situ method to measure the rate of transport of redox species through membranes for lithium batteries, N. Meddings, J.R. Owen, N. Garcia-Araez,  Journal of Power Sources 364, 148-155 (2017)

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