eprintid: 10147056
rev_number: 6
eprint_status: archive
userid: 699
dir: disk0/10/14/70/56
datestamp: 2022-04-21 08:57:02
lastmod: 2022-04-21 08:57:02
status_changed: 2022-04-21 08:57:02
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Huang, Chun
creators_name: Wilson, Matthew D
creators_name: Suzuki, Kosuke
creators_name: Liotti, Enzo
creators_name: Connolley, Thomas
creators_name: Magdysyuk, Oxana V
creators_name: Collins, Stephen
creators_name: Van Assche, Frederic
creators_name: Boone, Matthieu N
creators_name: Veale, Matthew C
creators_name: Lui, Andrew
creators_name: Wheater, Rhian-Mair
creators_name: Leung, Chu Lun Alex
title: 3D Correlative Imaging of Lithium Ion Concentration in a Vertically Oriented Electrode Microstructure with a Density Gradient
ispublished: inpress
divisions: C05
divisions: F45
divisions: B04
divisions: UCL
keywords: density gradient, ion concentration, vertically oriented structure
note: © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
abstract: The performance of Li+ ion batteries (LIBs) is hindered by steep Li+ ion concentration gradients in the electrodes. Although thick electrodes (≥300 µm) have the potential for reducing the proportion of inactive components inside LIBs and increasing battery energy density, the Li+ ion concentration gradient problem is exacerbated. Most understanding of Li+ ion diffusion in the electrodes is based on computational modeling because of the low atomic number (Z) of Li. There are few experimental methods to visualize Li+ ion concentration distribution of the electrode within a battery of typical configurations, for example, coin cells with stainless steel casing. Here, for the first time, an interrupted in situ correlative imaging technique is developed, combining novel, full-field X-ray Compton scattering imaging with X-ray computed tomography that allows 3D pixel-by-pixel mapping of both Li+ stoichiometry and electrode microstructure of a LiNi0.8 Mn0.1 Co0.1 O2 cathode to correlate the chemical and physical properties of the electrode inside a working coin cell battery. An electrode microstructure containing vertically oriented pore arrays and a density gradient is fabricated. It is shown how the designed electrode microstructure improves Li+ ion diffusivity, homogenizes Li+ ion concentration through the ultra-thick electrode (1 mm), and improves utilization of electrode active materials.
date: 2022
date_type: published
publisher: Wiley
official_url: https://doi.org/10.1002/advs.202105723
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1949773
doi: 10.1002/advs.202105723
medium: Print-Electronic
lyricists_name: Leung, Chu Lun Alex
lyricists_id: CLALE63
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
funding_acknowledgements: EP/S001239/1 [EPSRC]; EP/S001239/2 [EPSRC]; FITG034 [Faraday Institution]; EP/R511559/1 [EPSRC]; EP/R511638/1 [EPSRC]; 19K05519 [MEXT KAKENHI]; [Royal Society]; IEC∖R3∖193017 [Japan Society for the Promotion of Science]; 3G0A0417W [Ghent University Special Research Fund]; 01GC1517 [Ghent University Special Research Fund]
full_text_status: public
publication: Advanced Science
event_location: Germany
issn: 2198-3844
citation:        Huang, Chun;    Wilson, Matthew D;    Suzuki, Kosuke;    Liotti, Enzo;    Connolley, Thomas;    Magdysyuk, Oxana V;    Collins, Stephen;                         ... Leung, Chu Lun Alex; + view all <#>        Huang, Chun;  Wilson, Matthew D;  Suzuki, Kosuke;  Liotti, Enzo;  Connolley, Thomas;  Magdysyuk, Oxana V;  Collins, Stephen;  Van Assche, Frederic;  Boone, Matthieu N;  Veale, Matthew C;  Lui, Andrew;  Wheater, Rhian-Mair;  Leung, Chu Lun Alex;   - view fewer <#>    (2022)    3D Correlative Imaging of Lithium Ion Concentration in a Vertically Oriented Electrode Microstructure with a Density Gradient.                   Advanced Science        10.1002/advs.202105723 <https://doi.org/10.1002/advs.202105723>.    (In press).    Green open access   
 
document_url: https://discovery-pp.ucl.ac.uk/id/eprint/10147056/1/Advanced%20Science%20-%202022%20-%20Huang.pdf