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Retardation of Stru...
Retardation of Structure Densification by Increasing Covalency in Li-Rich Layered Oxide Positive Electrodes for Li-Ion Batteries
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- Morozov, Anatolii V. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia;Chemistry Department, Lomonosov Moscow State University, Leninskiye gory 1 bld 3, 119991 Moscow, Russia
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- Moiseev, Ivan A. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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- Savina, Aleksandra A. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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- Boev, Anton O. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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- Aksyonov, Dmitry A. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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- Zhang, Leiting (författare)
- Uppsala universitet,Strukturkemi
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- Morozova, Polina A. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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- Nikitina, Victoria A. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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- Pazhetnov, Egor M. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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- Berg, Erik (författare)
- Uppsala universitet,Strukturkemi
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- Fedotov, Stanislav S. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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- Tarascon, Jean-Marie (författare)
- Chaire de Chimie du Solide et del Energie, UMR 8260, College de France, 11 Place Marcelin Berthelot, 75231 Paris, France;Sorbonne Université, UPMC Univ Paris 06, 4 place Jussieu, F-75005 Paris, France;Réseau sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS 3459, 80039 Amiens, France
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- Antipov, Evgeny V. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia;Chemistry Department, Lomonosov Moscow State University, Leninskiye gory 1 bld 3, 119991 Moscow, Russia
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- Abakumov, Artem M. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia
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Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str 3, 143026 Moscow, Russia;Chemistry Department, Lomonosov Moscow State University, Leninskiye gory 1 bld 3, 119991 Moscow, Russia Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia (creator_code:org_t)
- 2022-07-20
- 2022
- Engelska.
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Ingår i: Chemistry of Materials. - : American Chemical Society (ACS). - 0897-4756 .- 1520-5002. ; 34:15, s. 6779-6791
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Because of the outstanding discharge capacity provided by oxygen redox activity, Li-rich layered oxide positive electrode materials for Li-ion batteries attract tremendous attention. However, there is still no full consensus on the role that the ionocovalency of transition metal (TM)–oxygen (O) chemical bonding plays in the reversibility of the oxygen redox as well as on both local crystal and electronic structure transformations. Here, we managed to tune the cationic/anionic redox contributions to the overall electrochemical activity using the xLi2RuO3-(1 – x)Li1.2Ni0.2Mn0.6O2 solid solutions as a model system possessing the same crystal structure and morphology as Li-rich layered oxides. We conclusively traced the whole cascade of events from increasing the covalency of the TM–O bond, suppressing irreversible oxygen oxidation to the generation of the reduced Mn species toward retarding the structure “densification” in the Li-rich layered oxides. The results demonstrate that enhancing the degree of covalency of the TM–O bonding is vitally important for anchoring the reversibility of the charge compensation mechanism occurring through partial oxygen oxidation.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
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Morozov, Anatoli ...
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Moiseev, Ivan A.
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Savina, Aleksand ...
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Boev, Anton O.
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Aksyonov, Dmitry ...
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Zhang, Leiting
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Morozova, Polina ...
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Nikitina, Victor ...
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Pazhetnov, Egor ...
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Berg, Erik
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Fedotov, Stanisl ...
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Tarascon, Jean-M ...
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Antipov, Evgeny ...
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Abakumov, Artem ...
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Chemistry of Mat ...
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Uppsala universitet