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Title: Sphere-Shaped Hierarchical Cathode with Enhanced Growth of Nanocrystal Planes for High-Rate and Cycling-Stable Li-Ion Batteries

High-energy and high-power Li-ion batteries have been intensively pursued as power sources in electronic vehicles and renewable energy storage systems in smart grids. With this purpose, developing high-performance cathode materials is urgently needed. Here we report an easy and versatile strategy to fabricate high-rate and cycling-stable hierarchical sphered cathode Li1.2Ni0.13Mn0.54Co0.13O2, by using an ionic interfusion method. The sphere-shaped hierarchical cathode is assembled with primary nanoplates with enhanced growth of nanocrystal planes in favor of Li+ intercalation/deintercalation, such as (010), (100), and (110) planes. This material with such unique structural features exhibits outstanding rate capability, cyclability, and high discharge capacities, achieving around 70% (175 mAhg–1) of the capacity at 0.1 C rate within about 2.1 min of ultrafast charging. Such cathode is feasible to construct high-energy and high-power Li-ion batteries.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [1]
  1. Beijing Inst. of Technology (China). Key Lab. of Environmental Science and Engineering, School of Chemical Engineering and the Environment
  2. Beijing Inst. of Technology (China). Key Lab. of Environmental Science and Engineering, School of Chemical Engineering and the Environment; Beijing Higher Institution Engineering Research Center of Power Battery and Chemical Energy Materials (China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.
Publication Date:
OSTI Identifier:
1182479
Report Number(s):
BNL--107272-2014-JA
Journal ID: ISSN 1530-6984; R&D Project: MA453MAEA; VT1201000
Grant/Contract Number:
AC02-98CH10886; 21443013; 2013AA050903; 2012039032; 20131039031
Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 15; Journal Issue: 1; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE national synchrotron light source