Physical and electrochemical properties of Li[Ni0.4CoxMn0.6-x]O-2 (x=0.1-0.4. electrode materials synthesized via coprecipitation
- Authors
- Sun, Yang Kook; Myung, Seung Taek; Bang, Hyun Joo; Park, Byung-Chon; Park, Sung June; Sung, Ng Yin
- Issue Date
- Jan-2007
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.154, no.10, pp.A937 - A942
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 154
- Number
- 10
- Start Page
- A937
- End Page
- A942
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180575
- DOI
- 10.1149/1.2763970
- ISSN
- 0013-4651
- Abstract
- Highly crystalline Li[Ni0.4CoxMn0.6-x]O-2 (x = 0.1-0.4) powders were synthesized from LiOH center dot H2O and coprecipitated [Ni0.4CoxMn0.6-x](OH)(2) (x = 0.1, 0.2, 0.3 and 0.4) hydroxides. In order to evaluate the impact of Co and Mn ratio on the structure, X- ray absorption near edge spectroscopy (XANES) and Rietveld refinement analyses of X-ray diffraction data were carried out. XANES results indicated that the Li[Ni0.4CoxMn0.6-x]O-2 (x = 0.1 - 0.4) consist of Ni2+, Co3+, and Mn4+ in the crystal structure. Rietveld refinement analysis of the Li[Ni0.4CoxMn0.6-x]O2 (x = 0.1 - 0.4) revealed that an increase of Co content decreases both lattice parameters of a and c axes simultaneously. An increase of Co content results in an increase of specific discharge capacity, but the corresponding operation voltages were slightly shifted to lower voltage. Decreases in electrochemically inactive tetravalent Mn content in overall metal compositions are one of the possible reasons for the lowering of onset exothermic reaction temperature as confirmed by differential scanning calorimetric experiments.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 에너지공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180575)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.