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나노 구조 물리 연구단
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Tuning of aluminum concentration distribution in high nickel cathode particles for lithium ion batteries

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Title
Tuning of aluminum concentration distribution in high nickel cathode particles for lithium ion batteries
Author(s)
Ilbok Lee; Joongho Bae; Jaekwang Kim; Young-Min Kim; Don-Hyung Ha; Hyungbin Son; Songhun Yoon
Publication Date
2020-03
Journal
JOURNAL OF ALLOYS AND COMPOUNDS, v.816, no., pp.152677 -
Publisher
ELSEVIER SCIENCE SA
Abstract
© 2019 This study focuses on a novel approach for the structural design of LiNi0.86Co0.12Al0.02O2 cathodes by tailoring the distribution of Al elements using milled-Al(OH)3. The distribution of Al in the cathode material is investigated using an electron probe micro analyzer. By controlling milled-Al(OH)3 addition time at 3 and 6 h, thickness of Al-rich layer is varied during co-precipitation process and following calcination with LiOH produces cathode materials with the variant Al distribution. Initial discharge capacities of the cathodes with the Al addition at 3 and 6 h are 202 and 195 mA h g−1 and the IE (initial efficiency) is 92.5 and 86.6%, respectively. The capacity retentions from the cycling test of the individual cathodes are as high as 96.7 and 92.6% at 50 cycles under 1 C rate, respectively. This advanced electrochemical performance is attributed to gradual increase of Al element from inner to outer in active material
URI
https://pr.ibs.re.kr/handle/8788114/6981
ISSN
0925-8388
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
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