Improved Electrochemical Performance of LiNi0.8Co0.1Mn0.1O2Cathode Materials Induced by a Facile Polymer Coating for Lithium-Ion Batteries

Hanyong Wang; Jiao Lin; Xiaodong Zhang; Lecai Wang; Jingbo Yang; Ersha Fan; Feng Wu; Renjie Chen; Li Li

doi:10.1021/acsaem.1c00982

Improved Electrochemical Performance of LiNi_0.8Co_0.1Mn_0.1O₂Cathode Materials Induced by a Facile Polymer Coating for Lithium-Ion Batteries

Hanyong Wang, Jiao Lin, Xiaodong Zhang, Lecai Wang, Jingbo Yang, Ersha Fan, Feng Wu, Renjie Chen, Li Li^*

^*Corresponding author for this work

School of Material Science and Engineering

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

48 Citations (Scopus)

Abstract

Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM) material has attracted intense attention because of the capacity and cost advantages. However, the poor cycling performance hampers the further development of NCM. As a coating layer, polysiloxane can improve the electrochemical properties of the NCM by eliminating remaining H2O on the surface of NCM and the reaction between HF in electrolyte and NCM, inhibiting the interfacial side reactions. Compared with the pristine NCM, the cycling performance of the NCM cathode coated with polysiloxane is significantly improved. The capacity retention of NCM coated with polysiloxane is 91.5% at 1 C after 120 cycles, while pristine NCM only maintains 71.4%. This study provides a method to alleviate the effects of interfacial side reactions and HF corrosion on NCM performance degradation after many cycles.

Original language	English
Journal	ACS Applied Energy Materials
DOIs	https://doi.org/10.1021/acsaem.1c00982
Publication status	Published - 2021

Keywords

LiNiCoMnO
cycling stability
lithium-ion battery
polysiloxane
surface coating

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acsaem.1c00982

Cite this

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title = "Improved Electrochemical Performance of LiNi0.8Co0.1Mn0.1O2Cathode Materials Induced by a Facile Polymer Coating for Lithium-Ion Batteries",

abstract = "Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM) material has attracted intense attention because of the capacity and cost advantages. However, the poor cycling performance hampers the further development of NCM. As a coating layer, polysiloxane can improve the electrochemical properties of the NCM by eliminating remaining H2O on the surface of NCM and the reaction between HF in electrolyte and NCM, inhibiting the interfacial side reactions. Compared with the pristine NCM, the cycling performance of the NCM cathode coated with polysiloxane is significantly improved. The capacity retention of NCM coated with polysiloxane is 91.5\% at 1 C after 120 cycles, while pristine NCM only maintains 71.4\%. This study provides a method to alleviate the effects of interfacial side reactions and HF corrosion on NCM performance degradation after many cycles.",

keywords = "LiNiCoMnO, cycling stability, lithium-ion battery, polysiloxane, surface coating",

author = "Hanyong Wang and Jiao Lin and Xiaodong Zhang and Lecai Wang and Jingbo Yang and Ersha Fan and Feng Wu and Renjie Chen and Li Li",

note = "Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

doi = "10.1021/acsaem.1c00982",

language = "English",

journal = "ACS Applied Energy Materials",

issn = "2574-0962",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Improved Electrochemical Performance of LiNi0.8Co0.1Mn0.1O2Cathode Materials Induced by a Facile Polymer Coating for Lithium-Ion Batteries

AU - Wang, Hanyong

AU - Lin, Jiao

AU - Zhang, Xiaodong

AU - Wang, Lecai

AU - Yang, Jingbo

AU - Fan, Ersha

AU - Wu, Feng

AU - Chen, Renjie

AU - Li, Li

PY - 2021

Y1 - 2021

N2 - Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM) material has attracted intense attention because of the capacity and cost advantages. However, the poor cycling performance hampers the further development of NCM. As a coating layer, polysiloxane can improve the electrochemical properties of the NCM by eliminating remaining H2O on the surface of NCM and the reaction between HF in electrolyte and NCM, inhibiting the interfacial side reactions. Compared with the pristine NCM, the cycling performance of the NCM cathode coated with polysiloxane is significantly improved. The capacity retention of NCM coated with polysiloxane is 91.5% at 1 C after 120 cycles, while pristine NCM only maintains 71.4%. This study provides a method to alleviate the effects of interfacial side reactions and HF corrosion on NCM performance degradation after many cycles.

AB - Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM) material has attracted intense attention because of the capacity and cost advantages. However, the poor cycling performance hampers the further development of NCM. As a coating layer, polysiloxane can improve the electrochemical properties of the NCM by eliminating remaining H2O on the surface of NCM and the reaction between HF in electrolyte and NCM, inhibiting the interfacial side reactions. Compared with the pristine NCM, the cycling performance of the NCM cathode coated with polysiloxane is significantly improved. The capacity retention of NCM coated with polysiloxane is 91.5% at 1 C after 120 cycles, while pristine NCM only maintains 71.4%. This study provides a method to alleviate the effects of interfacial side reactions and HF corrosion on NCM performance degradation after many cycles.

KW - LiNiCoMnO

KW - cycling stability

KW - lithium-ion battery

KW - polysiloxane

KW - surface coating

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DO - 10.1021/acsaem.1c00982

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JO - ACS Applied Energy Materials

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