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Title: Protecting Al foils for high-voltage lithium-ion chemistries

Abstract

The impact of Al protection on the electrochemical performance of high-voltage lithium-ion chemistries was studied using LiNi 0.6Mn 0.2Co 0.2O 2 (NMC 622) as a model material. A thin-layer of AlPO 4 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 AlPO 4 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 AlPO 4 coating on Al exhibited smaller impedance, better capacity retention, and higher coulombic efficiency over cycling. In conclusion, these properties of the AlPO 4 coating are highly desirable and can provide the same beneficial effects for all other high-voltage cathodes with different chemistries.

Authors:
 [1];  [2];  [3]; ORCiD logo [4]; ORCiD logo [4];  [5]; ORCiD logo [5];  [6];  [6];  [1];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Rochester, Rochester, NY (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  4. Tsinghua Univ., Beijing (China)
  5. Oregon State Univ., Corvallis, OR (United States)
  6. BMW Group, Munich (Germany)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
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
OSTI Identifier:
1491703
Alternate Identifier(s):
OSTI ID: 1548921
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Materials Today Energy
Additional Journal Information:
Journal Volume: 7; Journal Issue: C; Journal ID: ISSN 2468-6069
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; aluminum corrosion; aluminum phosphate; high-voltage cathodes; lithium-ion batteries; protective coatings

Citation Formats

Gao, Han, Ma, Tianyuan, Duong, Thy, Wang, Li, He, Xiangming, Lyubinetsky, Igor, Feng, Zhenxing, Maglia, Filippo, Lamp, Peter, Amine, Khalil, and Chen, Zonghai. Protecting Al foils for high-voltage lithium-ion chemistries. United States: N. p., 2017. Web. doi:10.1016/j.mtener.2017.12.001.
Gao, Han, Ma, Tianyuan, Duong, Thy, Wang, Li, He, Xiangming, Lyubinetsky, Igor, Feng, Zhenxing, Maglia, Filippo, Lamp, Peter, Amine, Khalil, & Chen, Zonghai. Protecting Al foils for high-voltage lithium-ion chemistries. United States. doi:10.1016/j.mtener.2017.12.001.
Gao, Han, Ma, Tianyuan, Duong, Thy, Wang, Li, He, Xiangming, Lyubinetsky, Igor, Feng, Zhenxing, Maglia, Filippo, Lamp, Peter, Amine, Khalil, and Chen, Zonghai. Wed . "Protecting Al foils for high-voltage lithium-ion chemistries". United States. doi:10.1016/j.mtener.2017.12.001. https://www.osti.gov/servlets/purl/1491703.
@article{osti_1491703,
title = {Protecting Al foils for high-voltage lithium-ion chemistries},
author = {Gao, Han and Ma, Tianyuan and Duong, Thy and Wang, Li and He, Xiangming and Lyubinetsky, Igor and Feng, Zhenxing and Maglia, Filippo and Lamp, Peter and Amine, Khalil and Chen, Zonghai},
abstractNote = {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.},
doi = {10.1016/j.mtener.2017.12.001},
journal = {Materials Today Energy},
number = C,
volume = 7,
place = {United States},
year = {2017},
month = {12}
}

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