3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient.
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 g...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Wiley
2022
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| _version_ | 1797111454151737344 |
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| author | Huang, C Wilson, MD Suzuki, K Liotti, E Connolley, T Magdysyuk, OV Collins, S Van Assche, F Boone, MN Veale, MC Lui, A Wheater, R-M Leung, CLA |
| author_facet | Huang, C Wilson, MD Suzuki, K Liotti, E Connolley, T Magdysyuk, OV Collins, S Van Assche, F Boone, MN Veale, MC Lui, A Wheater, R-M Leung, CLA |
| author_sort | Huang, C |
| collection | OXFORD |
| description | 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 LiNi0.8Mn0.1Co0.1O2 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. |
| first_indexed | 2024-03-07T08:10:36Z |
| format | Journal article |
| id | oxford-uuid:1bfe1def-5958-4fc3-806a-1d710a27d427 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:10:36Z |
| publishDate | 2022 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:1bfe1def-5958-4fc3-806a-1d710a27d4272023-11-24T16:19:14Z3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1bfe1def-5958-4fc3-806a-1d710a27d427EnglishSymplectic ElementsWiley2022Huang, CWilson, MDSuzuki, KLiotti, EConnolley, TMagdysyuk, OVCollins, SVan Assche, FBoone, MNVeale, MCLui, AWheater, R-MLeung, CLAThe 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 LiNi0.8Mn0.1Co0.1O2 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. |
| spellingShingle | Huang, C Wilson, MD Suzuki, K Liotti, E Connolley, T Magdysyuk, OV Collins, S Van Assche, F Boone, MN Veale, MC Lui, A Wheater, R-M Leung, CLA 3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient. |
| title | 3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient. |
| title_full | 3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient. |
| title_fullStr | 3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient. |
| title_full_unstemmed | 3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient. |
| title_short | 3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient. |
| title_sort | 3d correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient |
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