Protecting Al foils for high-voltage lithium-ion chemistries
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Rochester, Rochester, NY (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
- Tsinghua Univ., Beijing (China)
- Oregon State Univ., Corvallis, OR (United States)
- BMW Group, Munich (Germany)
The impact of Al protection on the electrochemical performance of high-voltage lithium-ion chemistries was studied using LiNi0.6Mn0.2Co0.2O2 (NMC 622) as a model material. A thin-layer of AlPO4 coating was prepared on Al current collectors to act as an artificial barrier against Al corrosion at high potentials. This coating was characterized by SEM, FTIR, and XPS. The coated Al showed higher electrochemical stability and was more resistive to corrosion compared to the bare foil. This beneficial effect was further confirmed by depth-dependent XPS studies. NMC 622/Li half-cells with coated and bare Al current collectors were constructed and a direct correlation between the cyclability of NMC 622 and the corrosion of Al was confirmed. The AlPO4 coating suppressed Al corrosion and improved cell performance. A more substantial enhancement was achieved under a high temperature-high current cycling condition. The cell with AlPO4 coating on Al exhibited smaller impedance, better capacity retention, and higher coulombic efficiency over cycling. In conclusion, these properties of the AlPO4 coating are highly desirable and can provide the same beneficial effects for all other high-voltage cathodes with different chemistries.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- BMW Group Technology Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); Natural Sciences and Engineering Research Council of Canada (NSERC); Oregon State University; USDOE
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1491703
- Alternate ID(s):
- OSTI ID: 1548921
- Journal Information:
- Materials Today Energy, Vol. 7, Issue C; ISSN 2468-6069
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Biomass‐Derived Poly(Furfuryl Alcohol)–Protected Aluminum Anode for Lithium‐Ion Batteries
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journal | April 2019 |
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