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Title: Aluminum-doped lithium nickel cobalt oxide electrodes for high-power lithium-ion batteries.

Abstract

Non-doped and aluminum-doped LiNi{sub 0.8}Co{sub 0.2}O{sub 2} cathodes from three industrial developers coupled with graphite anodes were made into lithium-ion cells for high-power applications. The powder morphology of the active cathode materials was examined by a scanning electron microscope. The electrochemical performance of these cells was investigated by hybrid pulse power characterization (HPPC) testing, accelerated aging, and AC impedance measurement of symmetric cells. Although all of the fresh cells are found to meet and exceed the power requirements set by PNGV, the power capability of those cells with non-doped LiNi {sub 0.8}Co{sub 0.2}O{sub 2} cathodes fades rapidly due to the rise of the cell impedance. Al-doping is found very effective to suppress the cell impedance rise by stabilizing the charge-transfer impedance on the cathode side. The stabilization mechanism may be related to the low average oxidation state of nickel ions in the cathode. The powder morphology also plays a secondary role in determining the impedance stabilization.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
EE
OSTI Identifier:
961364
Report Number(s):
ANL/CMT/JA-47131
Journal ID: ISSN 0378-7753; JPSODZ; TRN: US201011%%637
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
J. Power Sources
Additional Journal Information:
Journal Volume: 128; Journal Issue: 2 ; Apr. 5, 2004; Journal ID: ISSN 0378-7753
Country of Publication:
United States
Language:
ENGLISH
Subject:
04 OIL SHALES AND TAR SANDS; 25 ENERGY STORAGE; AGING; ALUMINIUM; ANODES; CATHODES; COBALT OXIDES; DOPED MATERIALS; ELECTRIC BATTERIES; ELECTRODES; ELECTRON MICROSCOPES; GRAPHITE; HYBRIDIZATION; IMPEDANCE; LITHIUM; LITHIUM IONS; LITHIUM OXIDES; MATERIALS; MORPHOLOGY; NICKEL; NICKEL IONS; NICKEL OXIDES; PERFORMANCE; POWDERS; PULSES; STABILIZATION; TESTING; USES; VALENCE

Citation Formats

Chen, C H, Liu, J, Stoll, M E, Henriksen, G, Vissers, D R, Amine, K, Chemical Engineering, and Univ. of Science and Technology of China. Aluminum-doped lithium nickel cobalt oxide electrodes for high-power lithium-ion batteries.. United States: N. p., 2004. Web. doi:10.1016/j.jpowsour.2003.10.009.
Chen, C H, Liu, J, Stoll, M E, Henriksen, G, Vissers, D R, Amine, K, Chemical Engineering, & Univ. of Science and Technology of China. Aluminum-doped lithium nickel cobalt oxide electrodes for high-power lithium-ion batteries.. United States. doi:10.1016/j.jpowsour.2003.10.009.
Chen, C H, Liu, J, Stoll, M E, Henriksen, G, Vissers, D R, Amine, K, Chemical Engineering, and Univ. of Science and Technology of China. Mon . "Aluminum-doped lithium nickel cobalt oxide electrodes for high-power lithium-ion batteries.". United States. doi:10.1016/j.jpowsour.2003.10.009.
@article{osti_961364,
title = {Aluminum-doped lithium nickel cobalt oxide electrodes for high-power lithium-ion batteries.},
author = {Chen, C H and Liu, J and Stoll, M E and Henriksen, G and Vissers, D R and Amine, K and Chemical Engineering and Univ. of Science and Technology of China},
abstractNote = {Non-doped and aluminum-doped LiNi{sub 0.8}Co{sub 0.2}O{sub 2} cathodes from three industrial developers coupled with graphite anodes were made into lithium-ion cells for high-power applications. The powder morphology of the active cathode materials was examined by a scanning electron microscope. The electrochemical performance of these cells was investigated by hybrid pulse power characterization (HPPC) testing, accelerated aging, and AC impedance measurement of symmetric cells. Although all of the fresh cells are found to meet and exceed the power requirements set by PNGV, the power capability of those cells with non-doped LiNi {sub 0.8}Co{sub 0.2}O{sub 2} cathodes fades rapidly due to the rise of the cell impedance. Al-doping is found very effective to suppress the cell impedance rise by stabilizing the charge-transfer impedance on the cathode side. The stabilization mechanism may be related to the low average oxidation state of nickel ions in the cathode. The powder morphology also plays a secondary role in determining the impedance stabilization.},
doi = {10.1016/j.jpowsour.2003.10.009},
journal = {J. Power Sources},
issn = {0378-7753},
number = 2 ; Apr. 5, 2004,
volume = 128,
place = {United States},
year = {2004},
month = {4}
}