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Title: Designing new lithium-excess cathode materials from percolation theory: Nanohighways in LixNi2–4x/3Sbx/3O2

Increasing lithium content is shown to be a successful strategy for designing new cathode materials. In layered LixNi2–4x/3Sbx/3O2 (x = 1.00–1.15), lithium excess improves both discharge capacity and capacity retention at 1C. Structural studies disclose a complex nanostructure pattern of Li–Sb and Ni–Sb ordering where the interface between these domains forms the correct local configuration for good lithium mobility. The <1 nm Li–Sb stripe domains and their interfaces thereby effectively act as nanohighways for lithium diffusion.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Published Article
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 15; Journal Issue: 1; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; cathode; lithium-excess; percolation; nano
OSTI Identifier:
1167008
Alternate Identifier(s):
OSTI ID: 1224203