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Title: Mitigating oxygen loss to improve the cycling performance of high capacity cation-disordered cathode materials

Journal Article · · Nature Communications
 [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [3];  [1];  [1]; ORCiD logo [3];  [4];  [5]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
  2. Univ. of California, Berkeley, CA (United States). Dept. of Chemical and Biomolecular Engineering
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  4. Univ. of California, Berkeley, CA (United States). Dept. of Chemical and Biomolecular Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Storage and Distributed Resources Division
  5. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division

Recent progress in the understanding of percolation theory points to cation-disordered lithium-excess transition metal oxides as high-capacity lithium-ion cathode materials. Nevertheless, the oxygen redox processes required for these materials to deliver high capacity can trigger oxygen loss, which leads to the formation of resistive surface layers on the cathode particles. Here, we demonstrate here that, somewhat surprisingly, fluorine can be incorporated into the bulk of disordered lithium nickel titanium molybdenum oxides using a standard solid-state method to increase the nickel content, and that this compositional modification is very effective in reducing oxygen loss, improving energy density, average voltage, and rate performance. We argue that the valence reduction on the anion site, offered by fluorine incorporation, opens up significant opportunities for the design of high-capacity cation-disordered cathode materials.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231; DGE-1106400
OSTI ID:
1419450
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 150 works
Citation information provided by
Web of Science

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Cited By (16)

Micropore-confined amorphous SnO 2 subnanoclusters as robust anode materials for Na-ion capacitors journal January 2019
Understanding Performance Degradation in Cation‐Disordered Rock‐Salt Oxide Cathodes journal July 2019
Material Design Concept of Lithium‐Excess Electrode Materials with Rocksalt‐Related Structures for Rechargeable Non‐Aqueous Batteries journal October 2018
Hidden structural and chemical order controls lithium transport in cation-disordered oxides for rechargeable batteries journal February 2019
Reversible Mn2+/Mn4+ double redox in lithium-excess cathode materials journal April 2018
Ultrahigh power and energy density in partially ordered lithium-ion cathode materials journal March 2020
Improved cycling stability in high-capacity Li-rich vanadium containing disordered rock salt oxyfluoride cathodes text January 2019
Effect of Fluorination on Lithium Transport and Short‐Range Order in Disordered‐Rocksalt‐Type Lithium‐Ion Battery Cathodes journal March 2020
Enhanced Cycling Stability of Cation Disordered Rock-Salt Li1.2Ti0.4Mn0.4O2 Material by Surface Modification With Al2O3 journal March 2019
F-Doping effects on carbon-coated Li 3 V 2 (PO 4 ) 3 as a cathode for high performance lithium rechargeable batteries: combined experimental and DFT studies journal January 2018
Kathodenmaterialien für wiederaufladbare Lithiumbatterien journal November 2019
Self-Activating, Capacitive Anion Intercalation Enables High-Power Graphite Cathodes journal March 2018
Advances in the Cathode Materials for Lithium Rechargeable Batteries journal February 2020
Improving the oxygen redox stability of NaCl-type cation disordered Li 2 MnO 3 in a composite structure of Li 2 MnO 3 and spinel-type LiMn 2 O 4 journal January 2019
Amorphous Ni‐Rich Li(Ni 1− x y Mn x Co y )O 2 –Li 2 SO 4 Positive Electrode Materials for Bulk‐Type All‐Oxide Solid‐State Batteries journal February 2019
Three-dimensional SWCNT and MWCNT hybrid networks for extremely high-loading and high rate cathode materials journal January 2019

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