Enhanced Electrochemical Performance of Li1.2[Mn0.54Co0.13Ni0.13]O2 Enabled by Synergistic Effect of Li1.5Na0.5SiO3 Modification

Xiangkun Nie; Zhou Xu; Lina Chen; Jianwei Li; Jun Cheng; Qing Sun; Ying Qiao; Xiaoyan Xu; Yamin Zhang; Deping Li; Ruiqin Peng; Lijie Ci

doi:10.1002/admi.202000378

Enhanced Electrochemical Performance of Li_1.2[Mn_0.54Co_0.13Ni_0.13]O₂ Enabled by Synergistic Effect of Li_1.5Na_0.5SiO₃ Modification

Xiangkun Nie
, Zhou Xu
, Lina Chen
, Jianwei Li
, Jun Cheng
, Qing Sun
, Ying Qiao
, Xiaoyan Xu
, Yamin Zhang
, Deping Li^*
, Ruiqin Peng
, Lijie Ci^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Surface coating is effective in improving the electrochemical properties of layered lithium-rich Mn-based oxide-Li_1.2[Mn_0.54Co_0.13Ni_0.13]O₂ (LLMO). In this work, a novel coating material-Na⁺ doped Li₂SiO₃ (forming Li_1.5Na_0.5SiO₃) is selected to modify LLMO. By means of the modification, the Na⁺ doping is realized along with the Li₂₋_xNa_xSiO₃ coating on the surface of Li_1.2−_xNa_x[Mn_0.54Co_0.13Ni_0.13]O₂ (NLLMO). The higher electrochemical activity of Li₂₋_xNa_xSiO₃ than Li₂SiO₃, and surface Na⁺ doping of LLMO, can significantly improve the battery performance of the LLMO cathode. Consequently, 1 wt% Li_1.5Na_0.5SiO₃ modified LLMO exhibits much improved cycling stability than the others with the minimum voltage decay of only 0.198 V and the highest capacity retention of 83.9% after 100 cycles at 0.5C (1C = 200 mAh g⁻¹). Moreover, it also exhibits an excellent rate performance (200.6 mAh g⁻¹ at 1C). The outstanding electrochemical performance of 1 wt% Li_1.5Na_0.5SiO₃ modified LLMO sheds more light on improving the properties of Li-rich cathode materials.

Original language	English
Article number	2000378
Journal	Advanced Materials Interfaces
Volume	7
Issue number	15
DOIs	https://doi.org/10.1002/admi.202000378
State	Published - 1 Aug 2020
Externally published	Yes

Keywords

LiNaSiO
doping
electrochemical performance
layered cathode materials
surface coatings

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10.1002/admi.202000378

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@article{7a12bf65e5fc431baa85d78738b34028,

title = "Enhanced Electrochemical Performance of Li1.2[Mn0.54Co0.13Ni0.13]O2 Enabled by Synergistic Effect of Li1.5Na0.5SiO3 Modification",

abstract = "Surface coating is effective in improving the electrochemical properties of layered lithium-rich Mn-based oxide-Li1.2[Mn0.54Co0.13Ni0.13]O2 (LLMO). In this work, a novel coating material-Na+ doped Li2SiO3 (forming Li1.5Na0.5SiO3) is selected to modify LLMO. By means of the modification, the Na+ doping is realized along with the Li2−xNaxSiO3 coating on the surface of Li1.2−xNax[Mn0.54Co0.13Ni0.13]O2 (NLLMO). The higher electrochemical activity of Li2−xNaxSiO3 than Li2SiO3, and surface Na+ doping of LLMO, can significantly improve the battery performance of the LLMO cathode. Consequently, 1 wt\% Li1.5Na0.5SiO3 modified LLMO exhibits much improved cycling stability than the others with the minimum voltage decay of only 0.198 V and the highest capacity retention of 83.9\% after 100 cycles at 0.5C (1C = 200 mAh g−1). Moreover, it also exhibits an excellent rate performance (200.6 mAh g−1 at 1C). The outstanding electrochemical performance of 1 wt\% Li1.5Na0.5SiO3 modified LLMO sheds more light on improving the properties of Li-rich cathode materials.",

keywords = "LiNaSiO, doping, electrochemical performance, layered cathode materials, surface coatings",

author = "Xiangkun Nie and Zhou Xu and Lina Chen and Jianwei Li and Jun Cheng and Qing Sun and Ying Qiao and Xiaoyan Xu and Yamin Zhang and Deping Li and Ruiqin Peng and Lijie Ci",

note = "Publisher Copyright: {\textcopyright} 2020 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2020",

month = aug,

day = "1",

doi = "10.1002/admi.202000378",

language = "英语",

volume = "7",

journal = "Advanced Materials Interfaces",

issn = "2196-7350",

publisher = "John Wiley and Sons Ltd",

number = "15",

}

TY - JOUR

T1 - Enhanced Electrochemical Performance of Li1.2[Mn0.54Co0.13Ni0.13]O2 Enabled by Synergistic Effect of Li1.5Na0.5SiO3 Modification

AU - Nie, Xiangkun

AU - Xu, Zhou

AU - Chen, Lina

AU - Li, Jianwei

AU - Cheng, Jun

AU - Sun, Qing

AU - Qiao, Ying

AU - Xu, Xiaoyan

AU - Zhang, Yamin

AU - Li, Deping

AU - Peng, Ruiqin

AU - Ci, Lijie

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Surface coating is effective in improving the electrochemical properties of layered lithium-rich Mn-based oxide-Li1.2[Mn0.54Co0.13Ni0.13]O2 (LLMO). In this work, a novel coating material-Na+ doped Li2SiO3 (forming Li1.5Na0.5SiO3) is selected to modify LLMO. By means of the modification, the Na+ doping is realized along with the Li2−xNaxSiO3 coating on the surface of Li1.2−xNax[Mn0.54Co0.13Ni0.13]O2 (NLLMO). The higher electrochemical activity of Li2−xNaxSiO3 than Li2SiO3, and surface Na+ doping of LLMO, can significantly improve the battery performance of the LLMO cathode. Consequently, 1 wt% Li1.5Na0.5SiO3 modified LLMO exhibits much improved cycling stability than the others with the minimum voltage decay of only 0.198 V and the highest capacity retention of 83.9% after 100 cycles at 0.5C (1C = 200 mAh g−1). Moreover, it also exhibits an excellent rate performance (200.6 mAh g−1 at 1C). The outstanding electrochemical performance of 1 wt% Li1.5Na0.5SiO3 modified LLMO sheds more light on improving the properties of Li-rich cathode materials.

AB - Surface coating is effective in improving the electrochemical properties of layered lithium-rich Mn-based oxide-Li1.2[Mn0.54Co0.13Ni0.13]O2 (LLMO). In this work, a novel coating material-Na+ doped Li2SiO3 (forming Li1.5Na0.5SiO3) is selected to modify LLMO. By means of the modification, the Na+ doping is realized along with the Li2−xNaxSiO3 coating on the surface of Li1.2−xNax[Mn0.54Co0.13Ni0.13]O2 (NLLMO). The higher electrochemical activity of Li2−xNaxSiO3 than Li2SiO3, and surface Na+ doping of LLMO, can significantly improve the battery performance of the LLMO cathode. Consequently, 1 wt% Li1.5Na0.5SiO3 modified LLMO exhibits much improved cycling stability than the others with the minimum voltage decay of only 0.198 V and the highest capacity retention of 83.9% after 100 cycles at 0.5C (1C = 200 mAh g−1). Moreover, it also exhibits an excellent rate performance (200.6 mAh g−1 at 1C). The outstanding electrochemical performance of 1 wt% Li1.5Na0.5SiO3 modified LLMO sheds more light on improving the properties of Li-rich cathode materials.

KW - LiNaSiO

KW - doping

KW - electrochemical performance

KW - layered cathode materials

KW - surface coatings

UR - https://www.scopus.com/pages/publications/85086173409

U2 - 10.1002/admi.202000378

DO - 10.1002/admi.202000378

M3 - 文章

AN - SCOPUS:85086173409

SN - 2196-7350

VL - 7

JO - Advanced Materials Interfaces

JF - Advanced Materials Interfaces

IS - 15

M1 - 2000378

ER -

Enhanced Electrochemical Performance of Li_1.2[Mn_0.54Co_0.13Ni_0.13]O₂ Enabled by Synergistic Effect of Li_1.5Na_0.5SiO₃ Modification

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Keywords

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