Further details may be obtained by contacting Dr Paul Adamson ( ).ģ. We seek highly qualified, ambitious, imaginative, hard-working and self-motivated candidates. You will use a range of characterisation techniques, including electrochemistry, microscopy, diffraction, tomography, NMR, XPS and Raman spectroscopy. This will also include investigation of solid electrolyte-electrode interfaces, an important topic in advancing solid-state battery technology. This project will involve developing an understanding of the fundamental science at the material and cell level, for example materials synthesis and characterisation of structural, electrochemical and materials properties. On the cathode side, expansion and contraction during cycling causes contact loss and rapid capacity fade. At the anode, stripping and plating of Li results in void formation and dendrite growth which ultimately lead to cell failure. LiCoO 2 or NMC, and an anode with the ultimate goal of this being lithium metal. However there are a number of challenges that must be tackled and to do this we need to understand the fundamental processes taking place in these cells.Īll solid state batteries consist of a solid electrolyte, an intercalation cathode, e.g. Replacing the liquid with a solid, enabling the use of a metal anode, will offer higher energy densities and improved safety. Further details may be obtained by contacting Dr Paul Adamson ( ).Ĭonventional Li ion batteries contain a flammable liquid electrolyte. Our aim is to understand the underlying science and use this knowledge to unlock the potential of Li-air. You will use a range of electrochemical, spectroscopic (Raman, FTIR, XPS, in situ mass spec.) and microscopic (AFM, TEM) methods to determine mechanisms and investigate the kinetics. This project will involve understanding the electrochemistry of O 2 reduction in Li + containing organic electrolytes to form Li 2O 2 and its reversal on charging, the use of redox mediators to facilitate the O 2 reduction and evolution, and the exploration of new electrolyte solutions and their influence of the reversibility of the reaction. It is the organic analogue of the oxygen reduction/oxygen evolution reaction in aqueous electrochemistry. On discharge, at the positive electrode, O 2 is reduced to O 2 2- forming solid Li 2O 2, which is oxidised on subsequent charging. The Li-air battery consists of a lithium metal negative electrode and a porous positive electrode, separated by an organic electrolyte. The challenge is to understand the electrochemistry and materials chemistry of the Li-air battery and by advancing the science unlock the door to a practical device. However, there are a number of issues that need to be overcome before its full potential can be realised. Theoretically the Li-air battery can store more energy than any other device, as such it could revolutionise energy storage.
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