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SUMMARY:Novel processing and 3D correlative imaging of electrodes for batt
 eries - Dr Chun Ann Huang\, Imperial College London
DTSTART:20240307T113000Z
DTEND:20240307T123000Z
UID:TALK208774@talks.cam.ac.uk
CONTACT:Catherine Pearson
DESCRIPTION:*11.30 - 12.30\n\nDr Chun Ann Huang\, Imperial College London*
 \n\nRechargeable batteries can contribute to powering electric transportat
 ion and storing electrical energy generated from intermittent renewable so
 urces. There are increasing demands for improving the rate capability and 
 energy density of current Li ion batteries (LIBs) and solid-state Li metal
  batteries (SSLMBs)\, along with other types of batteries. Two novel proce
 ssing technologies have been developed to optimise the battery electrode m
 icrostructure and improve ion diffusion kinetics: (i) directional ice temp
 lating (DIT) for fabricating thick (900 µm) cathodes with vertical pore a
 rrays and porosity gradient for LIBs [1]\; and (ii) directional freezing a
 nd polymerisation (DFP) for fabricating cathodes with vertical arrays of s
 olid polymer electrolyte (SPE) directly incorporated in the cathode micros
 tructure during processing for SSLMBs [2]. Both techniques reduced tortuos
 ity τ of ion diffusion pathways through electrode thickness to 1.5 from ~
 3.3 for commercial electrodes.\n\nWe then show a new correlative imaging t
 echnique of combining X-ray Compton scattering imaging (XCS-I) and compute
 d tomography (XCT) that allows 3D pixel-by-pixel mapping of Li chemical st
 oichiometry variations in a LiNi0.8Mn0.1Co0.1O2 electrode within a coin ce
 ll battery (Fig. 1) [3\,4]. Using this technique\, we show how the anisotr
 opic electrode microstructure improved Li+ ion diffusivity\, homogenised L
 i+ ion concentration\, and improved energy storage performance.\n\n*13.00 
 - 14.00\n\nEric Breard - University of Edinburgh*\n\nEnigma to Understandi
 ng: A Multidisciplinary Journey into the Mechanics of Concentrated Pyrocla
 stic Density Currents
LOCATION:Open Plan Area\, Institute for Energy and Environmental Flows\, M
 adingley Rise CB3 0EZ
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