Designing New Lithium-Excess Cathode Materials from Percolation Theory: Nanohighways in Li x Ni 2–4 x /3 Sb x /3 O 2
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1167008
- Alternate ID(s):
- OSTI ID: 1224203
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Vol. 15 Journal Issue: 1; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 48 works
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