Atomic Layer Deposition of Al–W–Fluoride on LiCoO2 Cathodes: Comparison of Particle- and Electrode-Level Coatings
- Chemical Sciences and Engineering Division and ‡Energy Systems Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
Atomic layer deposition (ALD) of the well-known Al2O3 on a LiCoO2 system is compared with that of a newly developed AlWxFy material. ALD coatings (~1 nm thick) of both materials are shown to be effective in improving cycle life through mitigation of surface-induced capacity losses. However, the behaviors of Al2O3 and AlWxFy are shown to be significantly different when coated directly on cathode particles versus deposition on a composite electrode composed of active materials, carbons, and binders. Electrochemical impedance spectroscopy, galvanostatic intermittent titration techniques, and four-point measurements suggest that electron transport is more limited in LiCoO2 particles coated with Al2O3 compared with that in particles coated with AlWxFy. Here, the results show that proper design/choice of coating materials (e.g., AlWxFy) can improve capacity retention without sacrificing electron transport and suggest new avenues for engineering electrode–electrolyte interfaces to enable high-voltage operation of lithium-ion batteries.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Electrical Energy Storage (CEES)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1371950
- Alternate ID(s):
- OSTI ID: 1395146
- Journal Information:
- ACS Omega, Journal Name: ACS Omega Vol. 2 Journal Issue: 7; ISSN 2470-1343
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Atomic Layer Deposition
Coatings
Lithium Ion Batteries
Metal Fluoride
Metal Oxide
Analytical chemistry
Batteries
Composites
Deposition process
Electric properties
Electric transport processes and properties
Electrode-electrolyte interface
Thin films