Detection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDF
<p>Oxidation and reduction of the oxide ions in the bulk of cathode materials is a potential route towards increasing the energy density of Li-ion batteries. Here, we present neutron PDF data which demonstrates the presence of short 1.2 Å O-O distances in a charged O-redox cathode ma...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Royal Society of Chemistry
2021
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| _version_ | 1797108406573596672 |
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| author | House, R Playford, HY Smith, R Holter, J Griffiths, I Zhou, K-J Bruce, PG |
| author_facet | House, R Playford, HY Smith, R Holter, J Griffiths, I Zhou, K-J Bruce, PG |
| author_sort | House, R |
| collection | OXFORD |
| description | <p>Oxidation and reduction of the oxide ions in the bulk of cathode materials is a potential route towards increasing the energy density of Li-ion batteries. Here, we present neutron PDF data which demonstrates the presence of short 1.2 Å O-O distances in a charged O-redox cathode material, corresponding to the bond length of molecular O<small><sub>2</sub></small>. This was achieved by collecting our data close to absolute zero (2K), suppressing thermal motion which may have obscured detection by PDF previously. This direct detection of molecular O<small><sub>2</sub></small> trapped in the material by diffraction complements the X-ray spectroscopy studies by e.g. RIXS while avoiding issues of possible beam damage as well as being a bulk average technique.</p> |
| first_indexed | 2024-03-07T07:28:46Z |
| format | Journal article |
| id | oxford-uuid:5d84a249-236d-41dd-9913-e283c957cc7f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:28:46Z |
| publishDate | 2021 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | oxford-uuid:5d84a249-236d-41dd-9913-e283c957cc7f2022-12-14T07:32:42ZDetection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDFJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5d84a249-236d-41dd-9913-e283c957cc7fEnglishSymplectic ElementsRoyal Society of Chemistry2021House, RPlayford, HYSmith, RHolter, JGriffiths, IZhou, K-JBruce, PG<p>Oxidation and reduction of the oxide ions in the bulk of cathode materials is a potential route towards increasing the energy density of Li-ion batteries. Here, we present neutron PDF data which demonstrates the presence of short 1.2 Å O-O distances in a charged O-redox cathode material, corresponding to the bond length of molecular O<small><sub>2</sub></small>. This was achieved by collecting our data close to absolute zero (2K), suppressing thermal motion which may have obscured detection by PDF previously. This direct detection of molecular O<small><sub>2</sub></small> trapped in the material by diffraction complements the X-ray spectroscopy studies by e.g. RIXS while avoiding issues of possible beam damage as well as being a bulk average technique.</p> |
| spellingShingle | House, R Playford, HY Smith, R Holter, J Griffiths, I Zhou, K-J Bruce, PG Detection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDF |
| title | Detection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDF |
| title_full | Detection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDF |
| title_fullStr | Detection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDF |
| title_full_unstemmed | Detection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDF |
| title_short | Detection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDF |
| title_sort | detection of trapped molecular o2 in a charged li rich cathode by neutron pdf |
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