Next Article in Journal
Enabling Online Search and Fault Inference for Batteries Based on Knowledge Graph
Previous Article in Journal
Analyzing Experimental Design and Input Data Variation of a Vanadium Redox Flow Battery Model
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Batteries
Volume 9
Issue 2
10.3390/batteries9020123
batteries-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Building Ultrathin Li4Mn5O12 Shell for Enhancing the Stability of Cobalt-Free Lithium-Rich Manganese Cathode Materials

by
Yuhong Qiu
1,2,
Xuefeng Peng
1,
Lichun Zhou
2,
Jie Yan
1,
Yaochen Song
1,2,
Linnan Bi
1,2,
Xin Long
1,2,
Liang He
2,
Qingyu Xie
2,
Sizhe Wang
2,3,* and
Jiaxuan Liao
1,2,*
1
School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
2
Yangtze Delta Region Institute (QuZhou), University of Electronic Science and Technology of China, Quzhou 324000, China
3
School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi’an 710021, China
*
Authors to whom correspondence should be addressed.
Batteries 2023, 9(2), 123; https://doi.org/10.3390/batteries9020123
Submission received: 5 January 2023 / Revised: 1 February 2023 / Accepted: 4 February 2023 / Published: 9 February 2023
Browse Figures
Versions Notes

Abstract

Spinel Li4Mn5O12 was successfully prepared by the wet chemical method to modify the surface of Li1.2Ni0.2Mn0.6O2. The results showed that an ultrathin spinel Li4Mn5O12 surface-modified layer with a thickness of approximately 10 nm was successfully constructed on the raw material surface, and that the cationic order was improved. In addition, the lithium ion diffusion coefficients (DLi+) of the raw materials and the modified materials were calculated using the EIS test and impedance fitting. The results indicated that the ultrathin Li4Mn5O12 surface modification shell can increase the lithium ion diffusion rate of the material and improve the rate capability of the material. So, the surface modification layer of spinel Li4Mn5O12 can reduce the oxygen loss of the first cycle and improve the cationic order of the material. Therefore, the first coulombic efficiency of Li4Mn5O12/Li1.2Ni0.2Mn0.6O2 material at the current density of 12.5 mA·g−1 reaches 80.46%, and the capacity retention rate reaches 91.74% after 50 cycles, which are 3.36% and 21.23% higher than those of the raw materials, respectively. It showed better electrochemical reversibility and cyclic stability. This study provides a straightforward and convenient modification method for improving the stability of cobalt-free lithium-rich manganese cathode materials and has a favorable application prospect.
Keywords: lithium-ion battery; positive electrode; cobalt-free lithium-rich manganese oxide; Li4Mn5O12-coated lithium-ion battery; positive electrode; cobalt-free lithium-rich manganese oxide; Li4Mn5O12-coated

Share and Cite

MDPI and ACS Style

Qiu, Y.; Peng, X.; Zhou, L.; Yan, J.; Song, Y.; Bi, L.; Long, X.; He, L.; Xie, Q.; Wang, S.; et al. Building Ultrathin Li4Mn5O12 Shell for Enhancing the Stability of Cobalt-Free Lithium-Rich Manganese Cathode Materials. Batteries 2023, 9, 123. https://doi.org/10.3390/batteries9020123

AMA Style

Qiu Y, Peng X, Zhou L, Yan J, Song Y, Bi L, Long X, He L, Xie Q, Wang S, et al. Building Ultrathin Li4Mn5O12 Shell for Enhancing the Stability of Cobalt-Free Lithium-Rich Manganese Cathode Materials. Batteries. 2023; 9(2):123. https://doi.org/10.3390/batteries9020123

Chicago/Turabian Style

Qiu, Yuhong, Xuefeng Peng, Lichun Zhou, Jie Yan, Yaochen Song, Linnan Bi, Xin Long, Liang He, Qingyu Xie, Sizhe Wang, and et al. 2023. "Building Ultrathin Li4Mn5O12 Shell for Enhancing the Stability of Cobalt-Free Lithium-Rich Manganese Cathode Materials" Batteries 9, no. 2: 123. https://doi.org/10.3390/batteries9020123

APA Style

Qiu, Y., Peng, X., Zhou, L., Yan, J., Song, Y., Bi, L., Long, X., He, L., Xie, Q., Wang, S., & Liao, J. (2023). Building Ultrathin Li4Mn5O12 Shell for Enhancing the Stability of Cobalt-Free Lithium-Rich Manganese Cathode Materials. Batteries, 9(2), 123. https://doi.org/10.3390/batteries9020123

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop