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Title: Structure dependent electrochemical performance of Li-rich layered oxides in lithium-ion batteries

Abstract

Rational and precise control of the structure and dimension of electrode materials is an efficient way to improve their electrochemical performance. In this work, solvothermal or co-precipitation method is used to synthesize lithium-rich layered oxide materials of Li1.2Mn0.56Co0.12Ni0.12O2 (LLO) with various morphologies and structures, including microspheres, microrods, nanoplates, and irregular nanoparticles. These materials exhibit strong structure- dependent electrochemical properties. The porous hierarchical structured LLO microrods exhibit the best performance, delivering a discharge capacity of 264.6 mAh g(-1) at 0.5 C with over 91% retention after 100 cycles. At a high rate of 5 C, a high discharge capacity of 173.6 mAh g(-1) can be achieved. This work reveals the relationship between the morphologies and electrochemical properties of LLO cathode materials, and provides a feasible approach to fabricating robust and high-performance electrode materials for lithium-ion batteries.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Natural Science Foundation of China (NNSFC); Hong Kong University of Science and Technology (HKUST)
OSTI Identifier:
1364391
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nano Energy; Journal Volume: 35; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Cathode; Li-rich layered oxide; Lithium-ion battery; Stability

Citation Formats

Fu, Fang, Yao, Yuze, Wang, Haiyan, Xu, Gui-Liang, Amine, Khalil, Sun, Shi-Gang, and Shao, Minhua. Structure dependent electrochemical performance of Li-rich layered oxides in lithium-ion batteries. United States: N. p., 2017. Web. doi:10.1016/j.nanoen.2017.04.005.
Fu, Fang, Yao, Yuze, Wang, Haiyan, Xu, Gui-Liang, Amine, Khalil, Sun, Shi-Gang, & Shao, Minhua. Structure dependent electrochemical performance of Li-rich layered oxides in lithium-ion batteries. United States. doi:10.1016/j.nanoen.2017.04.005.
Fu, Fang, Yao, Yuze, Wang, Haiyan, Xu, Gui-Liang, Amine, Khalil, Sun, Shi-Gang, and Shao, Minhua. Sat . "Structure dependent electrochemical performance of Li-rich layered oxides in lithium-ion batteries". United States. doi:10.1016/j.nanoen.2017.04.005.
@article{osti_1364391,
title = {Structure dependent electrochemical performance of Li-rich layered oxides in lithium-ion batteries},
author = {Fu, Fang and Yao, Yuze and Wang, Haiyan and Xu, Gui-Liang and Amine, Khalil and Sun, Shi-Gang and Shao, Minhua},
abstractNote = {Rational and precise control of the structure and dimension of electrode materials is an efficient way to improve their electrochemical performance. In this work, solvothermal or co-precipitation method is used to synthesize lithium-rich layered oxide materials of Li1.2Mn0.56Co0.12Ni0.12O2 (LLO) with various morphologies and structures, including microspheres, microrods, nanoplates, and irregular nanoparticles. These materials exhibit strong structure- dependent electrochemical properties. The porous hierarchical structured LLO microrods exhibit the best performance, delivering a discharge capacity of 264.6 mAh g(-1) at 0.5 C with over 91% retention after 100 cycles. At a high rate of 5 C, a high discharge capacity of 173.6 mAh g(-1) can be achieved. This work reveals the relationship between the morphologies and electrochemical properties of LLO cathode materials, and provides a feasible approach to fabricating robust and high-performance electrode materials for lithium-ion batteries.},
doi = {10.1016/j.nanoen.2017.04.005},
journal = {Nano Energy},
number = C,
volume = 35,
place = {United States},
year = {Sat Apr 08 00:00:00 EDT 2017},
month = {Sat Apr 08 00:00:00 EDT 2017}
}