Electrochemical stability of core-shell structure electrode for high voltage cycling as positive electrode for lithium ion batteries
- Authors
- Parka, Byoung Chul; Bang, Hyun Joo; Amine, Kahlil; Jung, E.; Sun, Yang Kook
- Issue Date
- Dec-2007
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- core-shell; co-precipitation; cathode; lithium ion battery
- Citation
- JOURNAL OF POWER SOURCES, v.174, no.2, pp.658 - 662
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 174
- Number
- 2
- Start Page
- 658
- End Page
- 662
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/179296
- DOI
- 10.1016/j.jpowsour.2007.06.114
- ISSN
- 0378-7753
- Abstract
- The core-shell type cathode material Li[(Ni0.8Co0.1Mn0.1)(0.8)(Ni0.5Mn0.5)(0.2])O-2 (CS) for Li-ion battery was synthesized via co-precipitation method. The electrochemical and thermal properties of the core-shell structured Li[(Ni0.8Co0.1Mn0.1)(0.8)(Ni0.5Mn0.5)(0.2)]O-2 were compared with those of the average composition of core-shell Li[Ni0.74Co0.8Mn0.18]O-2 (ACCS) and the mixture of the core Li[Ni0.8Co0.1Mn0.1]O-2 and the shell Li[Ni0.5Mn0.5]O-2 material (MCS). The CS shows the enhanced electrochemical properties in a high voltage range (4.5 V and 4.6 V) as well as the typical cut-off voltage range (4.3 V). The capacity retentions of CS, core, and ACCS material were 94.2% (176.9 mAh g(-1)), 86.6% (172 mAh g(-1)), and 88.4% (169.3 mAh g(-1)) after 120 cycles, respectively.
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