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Constructing “Li-ri...
Constructing “Li-rich Ni-rich” oxide cathodes for high-energy-density Li-ion batteries
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- Li, Biao (författare)
- Chimie du Solide-Energie, UMR 8260, College de France, 75231 Paris Cedex 05, France;Reseau sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS 3459, France
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- Rousse, Gwenaëlle (författare)
- Chimie du Solide-Energie, UMR 8260, College de France, 75231 Paris Cedex 05, France;Reseau sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS 3459, France;Sorbonne Universite, 4 Place Jussieu, 75005, Paris, France
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- Zhang, Leiting (författare)
- Battery Electrodes and Cells, Electrochemistry Laboratory, Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen-PSI, Switzerland
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- Avdeev, Maxim (författare)
- School of Chemistry, The University of Sydney, Sydney, New South Wales, Australia;Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Kirrawee DC, New South Wales, Australia
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- Deschamps, Michaël (författare)
- Reseau sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS 3459, France;CNRS, CEMHTI UPR3079, Universite d’Orleans, Orleans, France
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- Abakumov, Artem M. (författare)
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 121205 Moscow, Russia
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- Tarascon, Jean-Marie (författare)
- Chimie du Solide-Energie, UMR 8260, College de France, 75231 Paris Cedex 05, France;Reseau sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS 3459, France;Sorbonne Universite, 4 Place Jussieu, 75005, Paris, France
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Energy & Environmental Science. - : Royal Society of Chemistry. - 1754-5692 .- 1754-5706. ; 16:3, s. 1210-1222
- 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
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- The current exploration of high-energy-density cathode materials for Li-ion batteries is mainly concentrated on either so-called “Li-rich” or “Ni-rich” oxides. However, both are suffering from formidable practical challenges. Here, we combine these two concepts to obtain “Li-rich Ni-rich” oxides in pursuit of more practical high-energy-density cathodes. As a proof of concept, we synthesized an array of Li1+yNi(3−5y)/3Mo2y/3O2 oxides, whose structures were identified to be the coexistence of LiNiO2-rich and Li4MoO5-rich domains with the aid of XRD, TEM, and NMR techniques. Such an intergrowth structure of 5–20 nm size enables excellent mechanical and structural reversibility for the layered rock-salt LiNiO2-rich domain upon cycling thanks to the robust cubic rock-salt Li4MoO5-rich domain enabling an “epitaxial stabilization” effect. As a result, we achieved high capacities (>220 mA h g−1) with Ni contents as low as 80%; the Li1.09Ni0.85Mo0.06O2 member (y = 0.09) shows much improved cycling performances (91% capacity retention for 100 cycles at C/10) compared with pure LiNiO2. This work validates the feasibility of constructing Li-rich Ni-rich compounds in the form of intergrowing domains and hence unlocks vast possibilities for future cathode design.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
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