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NiCo(2)S(4) Bi-metal Sulfide Coating on LiNi(0.6)Co(0.2)Mn(0.2)O(2) Cathode for High-Performance All-Solid-State Lithium Batteries

[Image: see text] NiCo(2)S(4) nanoparticles (NPs) were dry coated on LiNi(0.6)Co(0.2)Mn(0.2)O(2) (NCM622) cathode using a resonant acoustic coating technique to produce all-solid-state lithium batteries. The NiCo(2)S(4) coating improved the electrochemical properties of the NCM622 cathode. In additi...

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Autores principales: Kim, Young-Jin, Rajagopal, Rajesh, Kang, Sung, Ryu, Kwang-Sun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970466/
https://www.ncbi.nlm.nih.gov/pubmed/33748596
http://dx.doi.org/10.1021/acsomega.0c05942
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author Kim, Young-Jin
Rajagopal, Rajesh
Kang, Sung
Ryu, Kwang-Sun
author_facet Kim, Young-Jin
Rajagopal, Rajesh
Kang, Sung
Ryu, Kwang-Sun
author_sort Kim, Young-Jin
collection PubMed
description [Image: see text] NiCo(2)S(4) nanoparticles (NPs) were dry coated on LiNi(0.6)Co(0.2)Mn(0.2)O(2) (NCM622) cathode using a resonant acoustic coating technique to produce all-solid-state lithium batteries. The NiCo(2)S(4) coating improved the electrochemical properties of the NCM622 cathode. In addition, NiCo(2)S(4) eliminated the space-charge layer and the cathode showed an excellent affinity with the interface with a sulfide-based solid electrolyte as an inert material. X-ray diffraction patterns of NCM622 coated with NiCo(2)S(4) showed the same peak separations and lattice parameters as those of bare NCM622. Field-emission scanning electron microscopy and electron dispersive spectroscopy mapping analyses showed that 0.3 wt% NiCo(2)S(4)-coated NCM622 had an evenly modified surface with NiCo(2)S(4) NPs. X-ray photoelectron spectroscopy (XPS) revealed that the surface of 0.3 wt% NiCo(2)S(4)-coated NCM622 had two different S 2p peaks, a Co–S peak, and Ni and Co peaks, compared to those of bare NCM622. Electrochemical studies with electrochemical impedance spectroscopy and galvanostatic charge–discharge cycle performances showed that NiCo(2)S(4)-coated NCM622 retained a higher specific capacity over multiple cycles than bare NCM622. Especially, 0.3 wt% NiCo(2)S(4)-coated NCM622 exhibited a capacity retention of 60.6% at a current density of 15 mA/g for 20 cycles, compared to only 37.3% for bare NCM622. Finally, interfacial XPS and transmission electron microscopy-electron energy loss spectroscopy analyses confirmed the stable state of 0.3 wt% NiCo(2)S(4)-coated NCM622 with minimal side reactions.
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spelling pubmed-79704662021-03-19 NiCo(2)S(4) Bi-metal Sulfide Coating on LiNi(0.6)Co(0.2)Mn(0.2)O(2) Cathode for High-Performance All-Solid-State Lithium Batteries Kim, Young-Jin Rajagopal, Rajesh Kang, Sung Ryu, Kwang-Sun ACS Omega [Image: see text] NiCo(2)S(4) nanoparticles (NPs) were dry coated on LiNi(0.6)Co(0.2)Mn(0.2)O(2) (NCM622) cathode using a resonant acoustic coating technique to produce all-solid-state lithium batteries. The NiCo(2)S(4) coating improved the electrochemical properties of the NCM622 cathode. In addition, NiCo(2)S(4) eliminated the space-charge layer and the cathode showed an excellent affinity with the interface with a sulfide-based solid electrolyte as an inert material. X-ray diffraction patterns of NCM622 coated with NiCo(2)S(4) showed the same peak separations and lattice parameters as those of bare NCM622. Field-emission scanning electron microscopy and electron dispersive spectroscopy mapping analyses showed that 0.3 wt% NiCo(2)S(4)-coated NCM622 had an evenly modified surface with NiCo(2)S(4) NPs. X-ray photoelectron spectroscopy (XPS) revealed that the surface of 0.3 wt% NiCo(2)S(4)-coated NCM622 had two different S 2p peaks, a Co–S peak, and Ni and Co peaks, compared to those of bare NCM622. Electrochemical studies with electrochemical impedance spectroscopy and galvanostatic charge–discharge cycle performances showed that NiCo(2)S(4)-coated NCM622 retained a higher specific capacity over multiple cycles than bare NCM622. Especially, 0.3 wt% NiCo(2)S(4)-coated NCM622 exhibited a capacity retention of 60.6% at a current density of 15 mA/g for 20 cycles, compared to only 37.3% for bare NCM622. Finally, interfacial XPS and transmission electron microscopy-electron energy loss spectroscopy analyses confirmed the stable state of 0.3 wt% NiCo(2)S(4)-coated NCM622 with minimal side reactions. American Chemical Society 2021-03-08 /pmc/articles/PMC7970466/ /pubmed/33748596 http://dx.doi.org/10.1021/acsomega.0c05942 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Kim, Young-Jin
Rajagopal, Rajesh
Kang, Sung
Ryu, Kwang-Sun
NiCo(2)S(4) Bi-metal Sulfide Coating on LiNi(0.6)Co(0.2)Mn(0.2)O(2) Cathode for High-Performance All-Solid-State Lithium Batteries
title NiCo(2)S(4) Bi-metal Sulfide Coating on LiNi(0.6)Co(0.2)Mn(0.2)O(2) Cathode for High-Performance All-Solid-State Lithium Batteries
title_full NiCo(2)S(4) Bi-metal Sulfide Coating on LiNi(0.6)Co(0.2)Mn(0.2)O(2) Cathode for High-Performance All-Solid-State Lithium Batteries
title_fullStr NiCo(2)S(4) Bi-metal Sulfide Coating on LiNi(0.6)Co(0.2)Mn(0.2)O(2) Cathode for High-Performance All-Solid-State Lithium Batteries
title_full_unstemmed NiCo(2)S(4) Bi-metal Sulfide Coating on LiNi(0.6)Co(0.2)Mn(0.2)O(2) Cathode for High-Performance All-Solid-State Lithium Batteries
title_short NiCo(2)S(4) Bi-metal Sulfide Coating on LiNi(0.6)Co(0.2)Mn(0.2)O(2) Cathode for High-Performance All-Solid-State Lithium Batteries
title_sort nico(2)s(4) bi-metal sulfide coating on lini(0.6)co(0.2)mn(0.2)o(2) cathode for high-performance all-solid-state lithium batteries
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970466/
https://www.ncbi.nlm.nih.gov/pubmed/33748596
http://dx.doi.org/10.1021/acsomega.0c05942
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