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Title: An Effectively Activated Hierarchical Nano-/Microspherical Li 1.2 Ni 0.2 Mn 0.6 O 2 Cathode for Long-Life and High-Rate Lithium-Ion Batteries

Abstract

Rechargeable lithium-ion batteries with high energy and high power density are required in the application of electric vehicles and portable electronics. Herein, we introduce a type of spherical Li-rich cathode material, Li1.2Ni0.2Mn0.6O2, assembled from uniform nanocubes by a facile polyvinylpyrrolidone (PVP)-assisted hydrothermal method. The material with a hierarchical nano-/microstructure exhibits stable high-rate performance. Furthermore, the precipitant (i.e., urea) and the structure-directing agent (i.e., PVP) effectively activated the Li2MnO3 components in the microscale material to achieve a high specific capacity of 298.5 mAh g-1 in the first cycle. This Li-rich cathode material still delivered 243 mAh g-1 at 0.1 C after 200 cycles and the capacity retentions at 0.5, 1, 2, and 5mC were 94.4, 78.7, 76.3, and 67.8 % after 150 cycles, respectively. The results make this Li-rich nano-/microstructure a promising cathode material for long-life and high-performance lithium-ion batteries.

Authors:
 [1];  [2];  [3];  [1];  [4];  [1];  [2];  [2];  [3];  [3]
  1. Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 P.R. China
  2. Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 P.R. China; Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081 P.R. China
  3. Chemical Sciences and Engineering Division, 9700 South Cass Avenue Lemont IL 60439 USA
  4. X-ray Sciences Division, 9700 South Cass Avenue Lemont IL 60439 USA
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Basic Research Program of China; Beijing Institute of Technology; USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technology
OSTI Identifier:
1395178
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: ChemSusChem; Journal Volume: 9; Journal Issue: 7
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; electrochemistry; energy storage; hierarchicalstructures; lithium; lithium-ion batteries

Citation Formats

Li, Yu, Bai, Ying, Bi, Xuanxuan, Qian, Ji, Ma, Lu, Tian, Jun, Wu, Chuan, Wu, Feng, Lu, Jun, and Amine, Khalil. An Effectively Activated Hierarchical Nano-/Microspherical Li 1.2 Ni 0.2 Mn 0.6 O 2 Cathode for Long-Life and High-Rate Lithium-Ion Batteries. United States: N. p., 2016. Web. doi:10.1002/cssc.201501548.
Li, Yu, Bai, Ying, Bi, Xuanxuan, Qian, Ji, Ma, Lu, Tian, Jun, Wu, Chuan, Wu, Feng, Lu, Jun, & Amine, Khalil. An Effectively Activated Hierarchical Nano-/Microspherical Li 1.2 Ni 0.2 Mn 0.6 O 2 Cathode for Long-Life and High-Rate Lithium-Ion Batteries. United States. doi:10.1002/cssc.201501548.
Li, Yu, Bai, Ying, Bi, Xuanxuan, Qian, Ji, Ma, Lu, Tian, Jun, Wu, Chuan, Wu, Feng, Lu, Jun, and Amine, Khalil. Fri . "An Effectively Activated Hierarchical Nano-/Microspherical Li 1.2 Ni 0.2 Mn 0.6 O 2 Cathode for Long-Life and High-Rate Lithium-Ion Batteries". United States. doi:10.1002/cssc.201501548.
@article{osti_1395178,
title = {An Effectively Activated Hierarchical Nano-/Microspherical Li 1.2 Ni 0.2 Mn 0.6 O 2 Cathode for Long-Life and High-Rate Lithium-Ion Batteries},
author = {Li, Yu and Bai, Ying and Bi, Xuanxuan and Qian, Ji and Ma, Lu and Tian, Jun and Wu, Chuan and Wu, Feng and Lu, Jun and Amine, Khalil},
abstractNote = {Rechargeable lithium-ion batteries with high energy and high power density are required in the application of electric vehicles and portable electronics. Herein, we introduce a type of spherical Li-rich cathode material, Li1.2Ni0.2Mn0.6O2, assembled from uniform nanocubes by a facile polyvinylpyrrolidone (PVP)-assisted hydrothermal method. The material with a hierarchical nano-/microstructure exhibits stable high-rate performance. Furthermore, the precipitant (i.e., urea) and the structure-directing agent (i.e., PVP) effectively activated the Li2MnO3 components in the microscale material to achieve a high specific capacity of 298.5 mAh g-1 in the first cycle. This Li-rich cathode material still delivered 243 mAh g-1 at 0.1 C after 200 cycles and the capacity retentions at 0.5, 1, 2, and 5mC were 94.4, 78.7, 76.3, and 67.8 % after 150 cycles, respectively. The results make this Li-rich nano-/microstructure a promising cathode material for long-life and high-performance lithium-ion batteries.},
doi = {10.1002/cssc.201501548},
journal = {ChemSusChem},
number = 7,
volume = 9,
place = {United States},
year = {Fri Mar 04 00:00:00 EST 2016},
month = {Fri Mar 04 00:00:00 EST 2016}
}