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Title: A comparative study on the substitution of divalent, trivalent, and tetravalent metal ions in LiNi{sub 1-x}M{sub x}O{sub 2}(M = Cu{sup 2+},Al{sup 3+},and Ti{sup 4+}).

Abstract

Stabilized lithium nickelate is receiving increased attention as a low-cost alternative to the LiCoO{sub 2} cathode now used in lithium batteries. Layered LiNi{sub 1-x}M{sub x}O{sub 2} samples (M= Cu{sup 2+}, Al{sup 3+} and Ti{sup 4+}, where 0.025{<=}x{<=}0.2) were prepared by solid state reaction at 750 C under an oxygen stream and subjected to powder X-ray diffraction analysis and coin-cell tests. The Cu{sup 2+}-substituted samples showed poor structural stability and electrochemical performance, while the Al{sup 3+}- and Ti{sup 4+}-substituted samples formed highly ordered and phase-pure layered compounds. Of the three compounds tested, the LiNi{sub 1-x}M{sub x}O{sub 2} electrodes exhibited the highest capacity and best electrochemical reversibility. Indeed, the LiNi{sub 0.975}Ti{sub 0.025}O{sub 2} electrode achieved the highest reversible capacity and energy density (900 Wh/kg) of all known layered LiNiO{sub 2} or LiCoO{sub 2} electrodes. Indications are that the structural integrity of the LiNi{sub 1-x}M{sub x}O{sub 2} materials was preserved because the Ti{sup 4+} ions prevented impurity Ni{sup 2+} migration into the lithium sites. The substitution of tetravalent titanium into lithium nickelate has proved to yield promising cathode materials and further studies are needed to optimize electrode composition and processing conditions.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
EE
OSTI Identifier:
949282
Report Number(s):
ANL/CMT/JA-39511
Journal ID: ISSN 0378-7753; JPSODZ; TRN: US201012%%80
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
J. Power Sources
Additional Journal Information:
Journal Volume: 104; Journal Issue: 1 ; Jan. 15, 2002; Journal ID: ISSN 0378-7753
Country of Publication:
United States
Language:
ENGLISH
Subject:
25 ENERGY STORAGE; CAPACITY; CATHODES; ELECTRODES; ENERGY DENSITY; LITHIUM; NICKELATES; OXYGEN; PERFORMANCE; PROCESSING; STABILITY; TITANIUM; X-RAY DIFFRACTION

Citation Formats

Kim, J, Amine, K, and Chemical Engineering. A comparative study on the substitution of divalent, trivalent, and tetravalent metal ions in LiNi{sub 1-x}M{sub x}O{sub 2}(M = Cu{sup 2+},Al{sup 3+},and Ti{sup 4+}).. United States: N. p., 2002. Web. doi:10.1016/S0378-7753(01)00900-4.
Kim, J, Amine, K, & Chemical Engineering. A comparative study on the substitution of divalent, trivalent, and tetravalent metal ions in LiNi{sub 1-x}M{sub x}O{sub 2}(M = Cu{sup 2+},Al{sup 3+},and Ti{sup 4+}).. United States. doi:10.1016/S0378-7753(01)00900-4.
Kim, J, Amine, K, and Chemical Engineering. Tue . "A comparative study on the substitution of divalent, trivalent, and tetravalent metal ions in LiNi{sub 1-x}M{sub x}O{sub 2}(M = Cu{sup 2+},Al{sup 3+},and Ti{sup 4+}).". United States. doi:10.1016/S0378-7753(01)00900-4.
@article{osti_949282,
title = {A comparative study on the substitution of divalent, trivalent, and tetravalent metal ions in LiNi{sub 1-x}M{sub x}O{sub 2}(M = Cu{sup 2+},Al{sup 3+},and Ti{sup 4+}).},
author = {Kim, J and Amine, K and Chemical Engineering},
abstractNote = {Stabilized lithium nickelate is receiving increased attention as a low-cost alternative to the LiCoO{sub 2} cathode now used in lithium batteries. Layered LiNi{sub 1-x}M{sub x}O{sub 2} samples (M= Cu{sup 2+}, Al{sup 3+} and Ti{sup 4+}, where 0.025{<=}x{<=}0.2) were prepared by solid state reaction at 750 C under an oxygen stream and subjected to powder X-ray diffraction analysis and coin-cell tests. The Cu{sup 2+}-substituted samples showed poor structural stability and electrochemical performance, while the Al{sup 3+}- and Ti{sup 4+}-substituted samples formed highly ordered and phase-pure layered compounds. Of the three compounds tested, the LiNi{sub 1-x}M{sub x}O{sub 2} electrodes exhibited the highest capacity and best electrochemical reversibility. Indeed, the LiNi{sub 0.975}Ti{sub 0.025}O{sub 2} electrode achieved the highest reversible capacity and energy density (900 Wh/kg) of all known layered LiNiO{sub 2} or LiCoO{sub 2} electrodes. Indications are that the structural integrity of the LiNi{sub 1-x}M{sub x}O{sub 2} materials was preserved because the Ti{sup 4+} ions prevented impurity Ni{sup 2+} migration into the lithium sites. The substitution of tetravalent titanium into lithium nickelate has proved to yield promising cathode materials and further studies are needed to optimize electrode composition and processing conditions.},
doi = {10.1016/S0378-7753(01)00900-4},
journal = {J. Power Sources},
issn = {0378-7753},
number = 1 ; Jan. 15, 2002,
volume = 104,
place = {United States},
year = {2002},
month = {1}
}