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Ni/Li Disordering in Layered Transition Metal Oxide: Electrochemical Impact, Origin, and Control

Journal Article · · Accounts of Chemical Research
Lithium ion batteries (LIBs) not only power most of today’s hybrid electric vehicles (HEV) and electric vehicles (EV) but also are considered as a promising system for grid-level storage. Large-scale applications for LIBs require substantial improvement in energy density, cost, and lifetime. Layered lithium transition metal (TM) oxides, in particular, Li(NixMnyCoz)O2 (NMC, x + y + z = 1) are the most promising candidates as cathode materials with the potential to increase energy densities and lifetime, reduce costs, and improve safety. In order to further boost Li storage capacity, a great deal of attention has been directed toward developing Ni-rich layered TM oxides. However, structural disorder as a result of Ni/Li exchange in octahedral sites becomes a critical issue when Ni content increases to high values, as it leads to a detrimental effect on Li diffusivity, cycling stability, first-cycle efficiency, and overall electrode performance. Increasing effort has been dedicated to improving the electrochemical performance of layered TM oxides via reduction of cationic mixing. Furthermore, it is important to summarize this research field and provide in-depth insight into the impact of Ni/Li disordering on electrochemical characteristics in layered TM oxides and its origin to accelerate the future development of layered TM oxides with high performance.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC02-05CH11231; SC0012704
OSTI ID:
1580225
Alternate ID(s):
OSTI ID: 1591865
Report Number(s):
BNL--212437-2019-JAAM
Journal Information:
Accounts of Chemical Research, Journal Name: Accounts of Chemical Research Journal Issue: 8 Vol. 52; ISSN 0001-4842
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

Correlation between manganese dissolution and dynamic phase stability in spinel-based lithium-ion battery journal October 2019
Surface/Interface Structure Degradation of Ni‐Rich Layered Oxide Cathodes toward Lithium‐Ion Batteries: Fundamental Mechanisms and Remedying Strategies journal December 2019
Cooling Induced Surface Reconstruction during Synthesis of High‐Ni Layered Oxides journal October 2019
Unveiling the benefits of potassium doping on the structural integrity of Li–Mn-rich layered oxides during prolonged cycling by dual-mode EPR spectroscopy journal January 2019
Probing the Nature of Li + /Ni 2+ Disorder on the Structure and Electrochemical Performance in Ni-Based Layered Oxide Cathodes journal January 2019

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