Active research, methods I've developed, and tools I've built. For educational resources on battery science and electrochemistry, see Lithium Inventory.
Developing standardised, reproducible workflows for the teardown and post-mortem characterisation of electric vehicle battery cells. This work grows cell teardown from unstructured academic work to a mature service delivering decision-grade insights, with common practice across multiple sites within the TRATON Group.
Large-format Li-ion cells age non-uniformly — different regions of the same cell can be in very different states of health. The HALIBATT project aims to develop rapid methods for teardown and quantification of this heterogeneity, with an industrial PhD student co-supervised at Uppsala University. Related work has led to the development of OLSA (see below).
An electrochemical method for estimating and spatially mapping capacity loss as part of a post-mortem analysis of large format batteries. Uses local measurements of electrode potential combined with an OCP fitting routine to estimate loss of lithium inventory with a ~2 minute measurement. Automated, and now a core part of TRATON's cell teardown workflow.
An electrochemical method for characterising internal resistance and solid-state diffusion in battery cells and electrodes — fast, practical, and instrument-agnostic. Originally developed for Li-S batteries, ICI has since been widely adopted across academia and industry for Li-ion, Na-ion, and other chemistries, including commercial cell formats and complete battery systems.
An open-source Julia script for basic geometric models of common battery cell formats. Useful for estimating basic cell properties (capacity, energy density, specific energy) and for reality-checking claims about new battery chemistries.
An R package for simulating (not fitting) electrochemical impedance spectra. Developed primarily for teaching and for generating examples in the Lithium Inventory EIS guide.
A collection of R scripts for importing and analysing data from Arbin battery cycling instruments. No longer updated — I no longer work with Arbin equipment — but retained here for anyone who finds it useful.
Cycle ageing of automotive cylindrical and prismatic cells; degradation mechanisms including Si loss, NCA degradation, and lithium plating. Industry–academia collaboration (Scania, Volvo, Uppsala, KTH, Chalmers).
Two PhD projects co-funded with Volkswagen; binder and electrolyte selection for the high-voltage LNMO electrode. Developed SCPV to quantify parasitic oxidation reactions.
Fundamental limitations to Li-S performance; electrode binder systems; operando X-ray diffraction; evolution of crystalline and amorphous discharge products. Led to the development of ICI.
Identified ethyl viologen as a redox mediator for the oxygen reduction reaction — the first reported redox shuttle for the discharge reaction in a Li-O2 cell.
Read more →Electropolymerisation of polymer electrolytes (PAN, polyether acrylates) onto 3D electrode structures for miniaturised batteries. Demonstrated conformal deposition on carbon foam and alloying anodes.
Read more →Synthesis and electrochemical characterisation of carbon-coated LiFePO4 and Co-doped analogues as positive electrode materials for Li-ion batteries.