Nanostructured Lithium Nickel Manganese Oxides for Lithium-Ion Batteries
- Authors
- Deng, Haixia; Belharouak, Ilias; Cook, Russel E.; Wu, Huiming; Sun, Yang-Kook; Amine, Khalil
- Issue Date
- Apr-2010
- Publisher
- ELECTROCHEMICAL SOC INC
- Keywords
- battery powered vehicles; electrochemical electrodes; hybrid electric vehicles; lithium compounds; nanostructured materials; nickel compounds; secondary cells
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.157, no.4, pp A447 - A452
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 157
- Number
- 4
- Start Page
- A447
- End Page
- A452
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/193947
- DOI
- 10.1149/1.3308598
- ISSN
- 0013-4651
1945-7111
- Abstract
- Nanostructured lithium nickel manganese oxides were investigated as advanced positive electrode materials for lithium-ion batteries designated to power plug-in hybrid electric vehicles and all-electric vehicles. The investigation included material characterization and electrochemical testing. In cell tests, the Li(1.375)Ni(0.25)Mn(0.75)O(2.4375) composition achieved high capacity (210 mAh g(-1)) at an elevated rate (230 mA g(-1)), which makes this material a promising candidate for high energy density Li-ion batteries, as does its being cobalt-free and uncoated. The material has spherical morphology with nanoprimary particles embedded in micrometer-sized secondary particles, possesses a multiphase character (spinel and layered), and exhibits a high packing density (over 2 g cm(-3)) that is essential for the design of high energy density positive electrodes. When combined with the Li(4)Ti(5)O(12) stable anode, the cell showed a capacity of 225 mAh g(-1) at the C/3 rate (73 mA g(-1)) with no capacity fading for 200 cycles. Other chemical compositions, Li((1+x))Ni(0.25)Mn(0.75)O((2.25+x/2)) (0.32 < x < 0.65), were also studied, and the relationships among their structural, morphological, and electrochemical properties are reported.
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