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Title: Lithium-Doping Stabilized High-Performance P2–Na0.66Li0.18Fe0.12Mn0.7O2 Cathode for Sodium Ion Batteries

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.9b01855· OSTI ID:1514702

While sodium-ion batteries (SIBs) hold great promise for large-scale electric energy storage and low speed electric vehicles, the poor capacity retention of the cathode is one of the bottlenecks in the development of SIBs. Following a strategy of using lithium doping in the transition-metal layer to stabilize the desodiated structure, we have designed and successfully synthesized a novel layered oxide cathode P2–Na0.66Li0.18Fe0.12Mn0.7O2, which demonstrated a high capacity of 190 mAh g–1 and a remarkably high capacity retention of ~87% after 80 cycles within a wide voltage range of 1.5–4.5 V. The outstanding stability is attributed to the reversible migration of lithium during cycling and the elimination of the detrimental P2–O2 phase transition, revealed by ex situ and in situ X-ray diffraction and solid-state nuclear magnetic resonance spectroscopy.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
SC0012704; AC02-06CH11357
OSTI ID:
1514702
Alternate ID(s):
OSTI ID: 1548293
Report Number(s):
BNL-211624-2019-JAAM
Journal Information:
Journal of the American Chemical Society, Vol. 141, Issue 16; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 119 works
Citation information provided by
Web of Science

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Cited By (3)

Li‐doping stabilized P2‐Li 0.2 Na 1.0 Mn 0.8 O 2 sodium ion cathode with oxygen redox activity journal December 2019
P2‐Na 0.67 Al x Mn 1− x O 2 : Cost‐Effective, Stable and High‐Rate Sodium Electrodes by Suppressing Phase Transitions and Enhancing Sodium Cation Mobility journal October 2019
P2-Na 0.67 Al x Mn 1− x O 2 : Cost-Effective, Stable and High-Rate Sodium Electrodes by Suppressing Phase Transitions and Enhancing Sodium Cation Mobility journal October 2019

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