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Enhanced Cycling St...
Enhanced Cycling Stability in the Anion Redox Material P3-Type Zn-Substituted Sodium Manganese Oxide
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- Linnell, Stephanie F. (författare)
- Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland.;Faraday Inst, Quad One,Harwell Sci & Innovat Campus, Didcot OX11 0RA, Oxon, England.
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- Hirsbrunner, Moritz (författare)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Imada, Saki (författare)
- Kyoto Inst Technol, Fac Elect Engn & Elect, Sakyo Ku, Kyoto 6068585, Japan.
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- Cibin, Giannantonio (författare)
- Diamond Light Source Ltd, Diamond House Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England.
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- Naden, Aaron B. (författare)
- Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland.
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- Chadwick, Alan, V (författare)
- Univ Kent, Sch Phys Sci, Canterbury CT2 7NH, Kent, England.
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- Irvine, John T. S. (författare)
- Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland.;Faraday Inst, Quad One,Harwell Sci & Innovat Campus, Didcot OX11 0RA, Oxon, England.
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- Duda, Laurent (författare)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Armstrong, A. Robert (författare)
- Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland.;Faraday Inst, Quad One,Harwell Sci & Innovat Campus, Didcot OX11 0RA, Oxon, England.
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Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland;Faraday Inst, Quad One,Harwell Sci & Innovat Campus, Didcot OX11 0RA, Oxon, England. Molekyl- och kondenserade materiens fysik (creator_code:org_t)
- 2022-06-07
- 2022
- Engelska.
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Ingår i: ChemElectroChem. - : John Wiley & Sons. - 2196-0216. ; 9:11
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Sodium layered oxides showing oxygen redox activity are promising positive electrodes for sodium-ion batteries (SIBs). However, structural degradation typically results in limited reversibility of the oxygen redox activity. Herein, the effect of Zn-doping on the electrochemical properties of P3-type sodium manganese oxide, synthesised under air and oxygen is investigated for the first time. Air-Na0.67Mn0.9Zn0.1O2 and Oxy-Na0.67Mn0.9Zn0.1O2 exhibit stable cycling performance between 1.8 and 3.8 V, each maintaining 96 % of their initial capacity after 30 cycles, where Mn3+/Mn4+ redox dominates. Increasing the voltage range to 1.8-4.3 V activates oxygen redox. For the material synthesised under air, oxygen redox activity is based on Zn, with limited reversibility. The additional transition metal vacancies in the material synthesised under oxygen result in enhanced oxygen redox reversibility with small voltage hysteresis. These results may assist the development of high-capacity and structurally stable oxygen redox-based materials for SIBs.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Anion redox chemistry
- Layered compounds
- Positive electrode material
- Sodium
- Transition metal vacancies
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Linnell, Stephan ...
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Hirsbrunner, Mor ...
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Imada, Saki
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Cibin, Giannanto ...
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Naden, Aaron B.
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Chadwick, Alan, ...
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visa fler...
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Irvine, John T. ...
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Duda, Laurent
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Armstrong, A. Ro ...
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ChemElectroChem
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Uppsala universitet