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Temperature-Sensitive Structure Evolution of Lithium–Manganese-Rich Layered Oxides for Lithium-Ion Batteries

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.8b07858· OSTI ID:1503590
 [1];  [2];  [3];  [1];  [1];  [4];  [5];  [4];  [1];  [6];  [1];  [3];  [2]
  1. Beijing Univ. of Technology, Beijing (China)
  2. Univ. of Tokyo, Tokyo (Japan)
  3. Argonne National Laboratory (ANL), Lemont, IL (United States)
  4. Chinese Academy of Sciences (CAS), Beijing (China)
  5. Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
  6. National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan)
+ Show Author Affiliations
Cathodes of lithium-rich layered oxides for high-energy Li-ion batteries in electrically powered vehicles are attracting considerable attention by the research community. Furthermore, current research is insufficient to account for their complex reaction mechanism and application. Thus, the structural evolution of lithium-manganese-rich layered oxides at different temperatures during electrochemical cycling has been investigated thoroughly, and their structural stability has been designed. The results indicated structure conversion from the two structures into a core-shell structure with a single distorted-monoclinic LiTMO2 structure core and disordered-spinel/rock salt structure shell, along with lattice oxygen extraction and lattice densification, transition- metal migration, and aggregation on the crystal surface. Here, the structural conversion behavior was found to be seriously temperature sensitive, accelerated with higher temperature, and can be effectively adjusted by structural design. This study clarifies the structural evolution mechanism of these lithium-rich layered oxides and opens the door to the design of similar high-energy materials with better cycle stability.
Research Organization:
Argonne National Laboratory (ANL), Lemont, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1503590
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 45 Vol. 140; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (7)

Dendrite‐Free Lithium Anodes with Ultra‐Deep Stripping and Plating Properties Based on Vertically Oriented Lithium–Copper–Lithium Arrays journal May 2019
A Novel Bifunctional Self‐Stabilized Strategy Enabling 4.6 V LiCoO 2 with Excellent Long‐Term Cyclability and High‐Rate Capability journal April 2019
A Layered Lithium‐Rich Li(Li 0.2 Ni 0.15 Mn 0.55 Co 0.1 )O 2 Cathode Material: Surface Phase Modification and Enhanced Electrochemical Properties for Lithium‐Ion Batteries journal January 2019
Dynamic visualization of the phase transformation path in LiFePO 4 during delithiation journal January 2019
A cross-like hierarchical porous lithium-rich layered oxide with (110)-oriented crystal planes as a high energy density cathode for lithium ion batteries journal January 2019
In situ formation of LiF decoration on a Li-rich material for long-cycle life and superb low-temperature performance journal January 2019
High cathode utilization efficiency through interface engineering in all-solid-state lithium-metal batteries journal January 2019

Figures / Tables (6)

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