Approaching the capacity limit of lithium cobalt oxide in lithium ion batteries via lanthanum and aluminium doping

Qi Liu, Xin Su (), Dan Lei, Yan Qin, Jianguo Wen, Fangmin Guo, Yimin A. Wu, Yangchun Rong, Ronghui Kou, Xianghui Xiao, Frederic Aguesse, Javier Bareño, Yang Ren (), Wenquan Lu and Yangxing Li ()
Additional contact information
Qi Liu: Argonne National Laboratory
Xin Su: Argonne National Laboratory
Dan Lei: Huawei Technologies
Yan Qin: Argonne National Laboratory
Jianguo Wen: Argonne National Laboratory
Fangmin Guo: Argonne National Laboratory
Yimin A. Wu: Argonne National Laboratory
Yangchun Rong: Argonne National Laboratory
Ronghui Kou: Argonne National Laboratory
Xianghui Xiao: Argonne National Laboratory
Frederic Aguesse: Argonne National Laboratory
Javier Bareño: Argonne National Laboratory
Yang Ren: Argonne National Laboratory
Wenquan Lu: Argonne National Laboratory
Yangxing Li: Huawei Technologies

Nature Energy, 2018, vol. 3, issue 11, 936-943

Abstract: Abstract Lithium cobalt oxides (LiCoO2) possess a high theoretical specific capacity of 274 mAh g–1. However, cycling LiCoO2-based batteries to voltages greater than 4.35 V versus Li/Li+ causes significant structural instability and severe capacity fade. Consequently, commercial LiCoO2 exhibits a maximum capacity of only ~165 mAh g–1. Here, we develop a doping technique to tackle this long-standing issue of instability and thus increase the capacity of LiCoO2. La and Al are concurrently doped into Co-containing precursors, followed by high-temperature calcination with lithium carbonate. The dopants are found to reside in the crystal lattice of LiCoO2, where La works as a pillar to increase the c axis distance and Al as a positively charged centre, facilitating Li+ diffusion, stabilizing the structure and suppressing the phase transition during cycling, even at a high cut-off voltage of 4.5 V. This doped LiCoO2 displays an exceptionally high capacity of 190 mAh g–1, cyclability with 96% capacity retention over 50 cycles and significantly enhanced rate capability.

Date: 2018
References: Add references at CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://www.nature.com/articles/s41560-018-0180-6 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natene:v:3:y:2018:i:11:d:10.1038_s41560-018-0180-6

Ordering information: This journal article can be ordered from
https://www.nature.com/nenergy/

DOI: 10.1038/s41560-018-0180-6

Access Statistics for this article

Nature Energy is currently edited by Fouad Khan

More articles in Nature Energy from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().