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Amores M, El-Shinawi H, McClelland I, Yeandel SR, Baker PJ, Smith RI, Playford HY, Goddard P, Corr SA, Cussen EJ. Li 1.5La 1.5MO 6 (M = W 6+, Te 6+) as a new series of lithium-rich double perovskites for all-solid-state lithium-ion batteries. Nat Commun 2020; 11:6392. [PMID: 33319782 PMCID: PMC7738526 DOI: 10.1038/s41467-020-19815-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 10/27/2020] [Indexed: 12/20/2022] Open
Abstract
Solid-state batteries are a proposed route to safely achieving high energy densities, yet this architecture faces challenges arising from interfacial issues between the electrode and solid electrolyte. Here we develop a novel family of double perovskites, Li1.5La1.5MO6 (M = W6+, Te6+), where an uncommon lithium-ion distribution enables macroscopic ion diffusion and tailored design of the composition allows us to switch functionality to either a negative electrode or a solid electrolyte. Introduction of tungsten allows reversible lithium-ion intercalation below 1 V, enabling application as an anode (initial specific capacity >200 mAh g-1 with remarkably low volume change of ∼0.2%). By contrast, substitution of tungsten with tellurium induces redox stability, directing the functionality of the perovskite towards a solid-state electrolyte with electrochemical stability up to 5 V and a low activation energy barrier (<0.2 eV) for microscopic lithium-ion diffusion. Characterisation across multiple length- and time-scales allows interrogation of the structure-property relationships in these materials and preliminary examination of a solid-state cell employing both compositions suggests lattice-matching avenues show promise for all-solid-state batteries.
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Affiliation(s)
- Marco Amores
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, S1 3JD, UK
| | - Hany El-Shinawi
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, S1 3JD, UK.,The Faraday Institution, Harwell Campus, Didcot, OX1 0RA, UK
| | - Innes McClelland
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, S1 3JD, UK
| | - Stephen R Yeandel
- Department of Chemistry, Loughborough University, Epinal Way, Loughborough, LE11 3TU, UK
| | - Peter J Baker
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | - Ronald I Smith
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | - Helen Y Playford
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | - Pooja Goddard
- Department of Chemistry, Loughborough University, Epinal Way, Loughborough, LE11 3TU, UK
| | - Serena A Corr
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, S1 3JD, UK. .,Department of Materials Science and Engineering, University of Sheffield, Sheffield, S1 3JD, UK.
| | - Edmund J Cussen
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, S1 3JD, UK. .,Department of Materials Science and Engineering, University of Sheffield, Sheffield, S1 3JD, UK.
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Lv C, Peng Y, Yang J, Duan X, Ma J, Wang T. Electrospun Nb-doped LiNi0.4Co0.2Mn0.4O2 nanobelts for lithium-ion batteries. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00811b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nb-Doped LiNi0.4Co0.2Mn0.2O2 nanobelts have been fabricated by an electrospinning method and used in lithium-ion batteries, which exhibit superior electrochemical performances. It is highly expected that this facile method may lead to further developments for other 1D multi-element oxide systems.
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Affiliation(s)
- Congjie Lv
- Pen-Tung Sah Institute of Micro-Nano Science and Technology
- Xiamen University
- Xiamen
- PR China
| | - Yi Peng
- Pen-Tung Sah Institute of Micro-Nano Science and Technology
- Xiamen University
- Xiamen
- PR China
| | - Jing Yang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology
- Xiamen University
- Xiamen
- PR China
| | - Xiaochuan Duan
- Pen-Tung Sah Institute of Micro-Nano Science and Technology
- Xiamen University
- Xiamen
- PR China
| | - Jianmin Ma
- School of Physics and Electronics
- Hunan University
- Changsha
- PR China
| | - Taihong Wang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology
- Xiamen University
- Xiamen
- PR China
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