Influence of annealing atmosphere on Li                         2                         ZrO                         3                         -coated LiNi                         0.6                         Co                         0.2                         Mn                         0.2                         O                         2                          and its high-voltage cycling performance

Xiaowen Zhan; Shuang Gao; Yang Tse Cheng

doi:10.1016/j.electacta.2019.01.077

Influence of annealing atmosphere on Li ₂ ZrO ₃ -coated LiNi _0.6 Co _0.2 Mn _0.2 O ₂ and its high-voltage cycling performance

Xiaowen Zhan
, Shuang Gao
, Yang Tse Cheng

Producción científica: Article › revisión exhaustiva

64 Citas (Scopus)

Resumen

Layered Ni-rich oxides have attracted much attention for the positive electrode in lithium-ion batteries due to their low cost and high capacity. However, they still suffer from poor cycling and rate performance, especially at high voltage. In this work, LiNi _0.6 Co _0.2 Mn _0.2 O ₂ powders are surface-modified by a Li ₂ ZrO ₃ coating prepared under either dry air or oxygen. The effect of the coating atmosphere on the electrochemical properties of Li ₂ ZrO ₃ /LiNi _0.6 Co _0.2 Mn _0.2 O ₂ are systematically investigated by multiple structural characterization (synchrotron HRXRD, SEM, TEM, and XPS) and electroanalytical (EIS, SSCV, and GITT) techniques. The Li ₂ ZrO ₃ coating prepared in oxygen is largely amorphous. It not only provides surface protection against the electrolyte corrosion but also enables faster lithium-ion transport at the interfacial regions. Additionally, oxygen atmosphere facilitates Zr diffusion from the surface coating to the bulk of LiNi _0.6 Co _0.2 Mn _0.2 O ₂ , which stabilizes the crystal structure and enhances lithium-ion diffusion. Consequently, LiNi _0.6 Co _0.2 Mn _0.2 O ₂ cathodes coated with Li ₂ ZrO ₃ in oxygen exhibit improved high-voltage cycling stability and high-rate performance.

Idioma original	English
Páginas (desde-hasta)	36-44
Número de páginas	9
Publicación	Electrochimica Acta
Volumen	300
DOI	https://doi.org/10.1016/j.electacta.2019.01.077
Estado	Published - mar 20 2019

Nota bibliográfica

Publisher Copyright:
© 2019 Elsevier Ltd

Financiación

Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences , under Contract No. DE-AC02-06CH11357 . The authors would like to acknowledge the support from US National Science Foundation Award 1355438 (Powering the Kentucky Bioeconomy for a Sustainable Future). Xiaowen Zhan would like to thank Dr. Mona Shirpour for helpful discussions, and the Department of Chemical and Materials Engineering at the University of Kentucky for its partial financial support of this work. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The authors would like to acknowledge the support from US National Science Foundation Award 1355438 (Powering the Kentucky Bioeconomy for a Sustainable Future). Xiaowen Zhan would like to thank Dr. Mona Shirpour for helpful discussions, and the Department of Chemical and Materials Engineering at the University of Kentucky for its partial financial support of this work.

Financiadores	Número del financiador
Department of Chemical and Materials Engineering at the University of Kentucky
Office of Basic Energy Sciences
Powering the Kentucky Bioeconomy
U. S. Department of Energy
National Science Foundation Arctic Social Science Program	1355438
Office of Science Programs
University of Kentucky

ODS de las Naciones Unidas

Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible

Affordable and clean energy

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2019.01.077

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Zhan, X., Gao, S., & Cheng, Y. T. (2019). Influence of annealing atmosphere on Li ₂ ZrO ₃ -coated LiNi _0.6 Co _0.2 Mn _0.2 O ₂ and its high-voltage cycling performance Electrochimica Acta, 300, 36-44. https://doi.org/10.1016/j.electacta.2019.01.077

Zhan, Xiaowen ; Gao, Shuang ; Cheng, Yang Tse. / Influence of annealing atmosphere on Li ₂ ZrO ₃ -coated LiNi _0.6 Co _0.2 Mn _0.2 O ₂ and its high-voltage cycling performance En: Electrochimica Acta. 2019 ; Vol. 300. pp. 36-44.

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title = " Influence of annealing atmosphere on Li 2 ZrO 3 -coated LiNi 0.6 Co 0.2 Mn 0.2 O 2 and its high-voltage cycling performance ",

abstract = " Layered Ni-rich oxides have attracted much attention for the positive electrode in lithium-ion batteries due to their low cost and high capacity. However, they still suffer from poor cycling and rate performance, especially at high voltage. In this work, LiNi 0.6 Co 0.2 Mn 0.2 O 2 powders are surface-modified by a Li 2 ZrO 3 coating prepared under either dry air or oxygen. The effect of the coating atmosphere on the electrochemical properties of Li 2 ZrO 3 /LiNi 0.6 Co 0.2 Mn 0.2 O 2 are systematically investigated by multiple structural characterization (synchrotron HRXRD, SEM, TEM, and XPS) and electroanalytical (EIS, SSCV, and GITT) techniques. The Li 2 ZrO 3 coating prepared in oxygen is largely amorphous. It not only provides surface protection against the electrolyte corrosion but also enables faster lithium-ion transport at the interfacial regions. Additionally, oxygen atmosphere facilitates Zr diffusion from the surface coating to the bulk of LiNi 0.6 Co 0.2 Mn 0.2 O 2 , which stabilizes the crystal structure and enhances lithium-ion diffusion. Consequently, LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathodes coated with Li 2 ZrO 3 in oxygen exhibit improved high-voltage cycling stability and high-rate performance.",

keywords = "High voltage, LiNi Co Mn O, Lithium-ion battery, Oxygen atmosphere, Surface coating",

author = "Xiaowen Zhan and Shuang Gao and Cheng, \{Yang Tse\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

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day = "20",

doi = "10.1016/j.electacta.2019.01.077",

language = "English",

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Zhan, X, Gao, S & Cheng, YT 2019, ' Influence of annealing atmosphere on Li ₂ ZrO ₃ -coated LiNi _0.6 Co _0.2 Mn _0.2 O ₂ and its high-voltage cycling performance ', Electrochimica Acta, vol. 300, pp. 36-44. https://doi.org/10.1016/j.electacta.2019.01.077

Influence of annealing atmosphere on Li ₂ ZrO ₃ -coated LiNi _0.6 Co _0.2 Mn _0.2 O ₂ and its high-voltage cycling performance . / Zhan, Xiaowen; Gao, Shuang; Cheng, Yang Tse.
En: Electrochimica Acta, Vol. 300, 20.03.2019, p. 36-44.

Producción científica: Article › revisión exhaustiva

TY - JOUR

T1 - Influence of annealing atmosphere on Li 2 ZrO 3 -coated LiNi 0.6 Co 0.2 Mn 0.2 O 2 and its high-voltage cycling performance

AU - Zhan, Xiaowen

AU - Gao, Shuang

AU - Cheng, Yang Tse

PY - 2019/3/20

Y1 - 2019/3/20

N2 - Layered Ni-rich oxides have attracted much attention for the positive electrode in lithium-ion batteries due to their low cost and high capacity. However, they still suffer from poor cycling and rate performance, especially at high voltage. In this work, LiNi 0.6 Co 0.2 Mn 0.2 O 2 powders are surface-modified by a Li 2 ZrO 3 coating prepared under either dry air or oxygen. The effect of the coating atmosphere on the electrochemical properties of Li 2 ZrO 3 /LiNi 0.6 Co 0.2 Mn 0.2 O 2 are systematically investigated by multiple structural characterization (synchrotron HRXRD, SEM, TEM, and XPS) and electroanalytical (EIS, SSCV, and GITT) techniques. The Li 2 ZrO 3 coating prepared in oxygen is largely amorphous. It not only provides surface protection against the electrolyte corrosion but also enables faster lithium-ion transport at the interfacial regions. Additionally, oxygen atmosphere facilitates Zr diffusion from the surface coating to the bulk of LiNi 0.6 Co 0.2 Mn 0.2 O 2 , which stabilizes the crystal structure and enhances lithium-ion diffusion. Consequently, LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathodes coated with Li 2 ZrO 3 in oxygen exhibit improved high-voltage cycling stability and high-rate performance.

AB - Layered Ni-rich oxides have attracted much attention for the positive electrode in lithium-ion batteries due to their low cost and high capacity. However, they still suffer from poor cycling and rate performance, especially at high voltage. In this work, LiNi 0.6 Co 0.2 Mn 0.2 O 2 powders are surface-modified by a Li 2 ZrO 3 coating prepared under either dry air or oxygen. The effect of the coating atmosphere on the electrochemical properties of Li 2 ZrO 3 /LiNi 0.6 Co 0.2 Mn 0.2 O 2 are systematically investigated by multiple structural characterization (synchrotron HRXRD, SEM, TEM, and XPS) and electroanalytical (EIS, SSCV, and GITT) techniques. The Li 2 ZrO 3 coating prepared in oxygen is largely amorphous. It not only provides surface protection against the electrolyte corrosion but also enables faster lithium-ion transport at the interfacial regions. Additionally, oxygen atmosphere facilitates Zr diffusion from the surface coating to the bulk of LiNi 0.6 Co 0.2 Mn 0.2 O 2 , which stabilizes the crystal structure and enhances lithium-ion diffusion. Consequently, LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathodes coated with Li 2 ZrO 3 in oxygen exhibit improved high-voltage cycling stability and high-rate performance.

KW - High voltage

KW - LiNi Co Mn O

KW - Lithium-ion battery

KW - Oxygen atmosphere

KW - Surface coating

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U2 - 10.1016/j.electacta.2019.01.077

DO - 10.1016/j.electacta.2019.01.077

M3 - Article

AN - SCOPUS:85060344420

SN - 0013-4686

VL - 300

SP - 36

EP - 44

JO - Electrochimica Acta

JF - Electrochimica Acta

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Zhan X, Gao S, Cheng YT. Influence of annealing atmosphere on Li ₂ ZrO ₃ -coated LiNi _0.6 Co _0.2 Mn _0.2 O ₂ and its high-voltage cycling performance Electrochimica Acta. 2019 mar 20;300:36-44. doi: 10.1016/j.electacta.2019.01.077

Influence of annealing atmosphere on Li 2 ZrO 3 -coated LiNi 0.6 Co 0.2 Mn 0.2 O 2 and its high-voltage cycling performance