P. P. Paul (University of Manchester, ESRF), M. DiMichiel, S. Checchia (ESRF), A. V. Llewellyn (University College London), I. Mombrini (ESRF), T. M. M. Heenan (Electrochemical Innovation Lab, UCL), P. R. Shearing (STFC Batteries/Energy SUPERSTORE), and P. Withers (University of Manchester)