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Title: AlF 3 Surface-Coated Li[Li 0.2 Ni 0.17 Co 0.07 Mn 0.56 ]O 2 Nanoparticles with Superior Electrochemical Performance for Lithium-Ion Batteries

Journal Article · · ChemSusChem
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  1. Henan Univ., Kaifeng (China)
  2. Henan Univ., Kaifeng (China); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. McGill Univ., Montreal, QC (Canada)
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For Li-rich layered cathode materials considerable attention has been paid owing to their high capacity performance for Li-ion batteries (LIBs). In our work, layered Li-rich Li[Li0.2Ni0.17Co0.07Mn0.56]O2 nanoparticles are surface-modified with AlF3 through a facile chemical deposition method. The AlF3 surface layers have little impact on the structure of the material and act as buffers to prevent the direct contact of the electrode with the electrolyte; thus, they enhance the electrochemical performance significantly. The 3 wt% AlF3-coated Li-rich electrode exhibits the best cycling capability and has a considerably enhanced capacity retention of 83.1% after 50 cycles. Moreover, the rate performance and thermal stability of the 3 wt% AlF3-coated electrode are also clearly improved. Finally, surface analysis indicates that the AlF3 coating layer can largely suppress the undesirable growth of solid electrolyte interphase (SEI) film and, therefore, stabilizes the structure upon cycling.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725; 50902044; 2015AA034201; 2012IRTSTHN004; 124200510004
OSTI ID:
1287012
Journal Information:
ChemSusChem, Vol. 8, Issue 15; ISSN 1864-5631
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

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Cited By (8)

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries journal April 2019
Review on Challenges and Recent Advances in the Electrochemical Performance of High Capacity Li- and Mn-Rich Cathode Materials for Li-Ion Batteries journal December 2017
Von Lithium- zu Natriumionenbatterien: Vorteile, Herausforderungen und Überraschendes journal November 2017
From Lithium-Ion to Sodium-Ion Batteries: Advantages, Challenges, and Surprises journal November 2017
Nanoscale surface modification of Li-rich layered oxides for high-capacity cathodes in Li-ion batteries journal March 2018
Engineering oxygen vacancies in hierarchically Li-rich layered oxide porous microspheres for high-rate lithium ion battery cathode journal June 2019
A novel strategy for the synthesis of hard carbon spheres encapsulated with graphene networks as a low-cost and large-scalable anode material for fast sodium storage with an ultralong cycle life journal January 2020
Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries text January 2019

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Related Subjects

25 ENERGY STORAGE
batteries
fluorides
nanoparticles
sol-gel processes
surface analysis
SOLID-SOLUTION CATHODES
SECONDARY BATTERIES
COMPOSITE CATHODE
CYCLING STABILITY
LICOO2 CATHODE
HIGH-CAPACITY
LI
ELECTRODES
IMPROVEMENT
OXIDE