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Shevtsov A, Han H, Morozov A, Carozza JC, Savina AA, Shakhova I, Khasanova NR, Antipov EV, Dikarev EV, Abakumov AM. Protective Spinel Coating for Li 1.17Ni 0.17Mn 0.50Co 0.17O 2 Cathode for Li-Ion Batteries through Single-Source Precursor Approach. Nanomaterials (Basel) 2020; 10:nano10091870. [PMID: 32961971 PMCID: PMC7558323 DOI: 10.3390/nano10091870] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 12/15/2022]
Abstract
The Li1.17Ni0.17Mn0.50Co0.17O2 Li-rich NMC positive electrode (cathode) for lithium-ion batteries has been coated with nanocrystals of the LiMn1.5Co0.5O4 high-voltage spinel cathode material. The coating was applied through a single-source precursor approach by a deposition of the molecular precursor LiMn1.5Co0.5(thd)5 (thd = 2,2,6,6-tetramethyl-3,5-heptanedionate) dissolved in diethyl ether, followed by thermal decomposition at 400 °C inair resulting in a chemically homogeneous cubic spinel. The structure and chemical composition of the coatings, deposited on the model SiO2 spheres and Li-rich NMC crystallites, were analyzed using powder X-ray diffraction, electron diffraction, high angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), and energy-dispersive X-ray (EDX) mapping. The coated material containing 12 wt.% of spinel demonstrates a significantly improved first cycle Coulombic efficiency of 92% with a high first cycle discharge capacity of 290 mAhg-1. The coating also improves the capacity and voltage retention monitored over 25 galvanostatic charge-discharge cycles, although a complete suppression of the capacity and voltage fade is not achieved.
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Affiliation(s)
- Andrey Shevtsov
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia; (A.M.); (A.A.S.); (I.S.); (E.V.A.); (A.M.A.)
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Correspondence:
| | - Haixiang Han
- Department of Chemistry, University at Albany, Albany, NY 12222, USA; (H.H.); (J.C.C.); (E.V.D.)
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Anatolii Morozov
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia; (A.M.); (A.A.S.); (I.S.); (E.V.A.); (A.M.A.)
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Jesse C. Carozza
- Department of Chemistry, University at Albany, Albany, NY 12222, USA; (H.H.); (J.C.C.); (E.V.D.)
| | - Aleksandra A. Savina
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia; (A.M.); (A.A.S.); (I.S.); (E.V.A.); (A.M.A.)
| | - Iaroslava Shakhova
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia; (A.M.); (A.A.S.); (I.S.); (E.V.A.); (A.M.A.)
| | - Nellie R. Khasanova
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Evgeny V. Antipov
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia; (A.M.); (A.A.S.); (I.S.); (E.V.A.); (A.M.A.)
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Evgeny V. Dikarev
- Department of Chemistry, University at Albany, Albany, NY 12222, USA; (H.H.); (J.C.C.); (E.V.D.)
| | - Artem M. Abakumov
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel str. 3, 143026 Moscow, Russia; (A.M.); (A.A.S.); (I.S.); (E.V.A.); (A.M.A.)
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Kazzazi A, Bresser D, Birrozzi A, von Zamory J, Hekmatfar M, Passerini S. Comparative Analysis of Aqueous Binders for High-Energy Li-Rich NMC as a Lithium-Ion Cathode and the Impact of Adding Phosphoric Acid. ACS Appl Mater Interfaces 2018; 10:17214-17222. [PMID: 29701454 DOI: 10.1021/acsami.8b03657] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Even though electrochemically inactive, the binding agent in lithium-ion electrodes substantially contributes to the performance metrics such as the achievable capacity, rate capability, and cycling stability. Herein, we present an in-depth comparative analysis of three different aqueous binding agents, allowing for the replacement of the toxic N-methyl-2-pyrrolidone as the processing solvent, for high-energy Li1.2Ni0.16Mn0.56Co0.08O2 (Li-rich NMC or LR-NMC) as a potential next-generation cathode material. The impact of the binding agents, sodium carboxymethyl cellulose, sodium alginate, and commercial TRD202A (TRD), and the related chemical reactions occurring during the electrode coating process on the electrode morphology and cycling performance is investigated. In particular, the role of phosphoric acid in avoiding the aluminum current collector corrosion and stabilizing the LR-NMC/electrolyte interface as well as its chemical interaction with the binder is investigated, providing an explanation for the observed differences in the electrochemical performance.
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Affiliation(s)
- Arefeh Kazzazi
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
| | - Dominic Bresser
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
| | - Agnese Birrozzi
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
| | - Jan von Zamory
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
| | - Maral Hekmatfar
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
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