Elucidating roles of cation disorder and spinel phase in high-capacity integrated spinel-layered cathodes
- Authors
- Ngoc Hung Vu; Van-Duong Dao; Im, Won Bin
- Issue Date
- Sep-2021
- Publisher
- ELSEVIER
- Keywords
- Spinel; Layered; Cation disorder; High-capacity cathode; Li-ion battery
- Citation
- JOURNAL OF POWER SOURCES, v.507, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 507
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/141123
- DOI
- 10.1016/j.jpowsour.2021.230315
- ISSN
- 0378-7753
- Abstract
- Integrated spinel-layered cathode materials are much appeal for use in high-energy-density Li-ion batteries. Here, we introduce a one-step hydrothermal reaction to synthesize high-capacity cathode materials (>300 mAh g-1) based on Li-Mn-O systems. The synthesis temperature governs the phase components and cation disorder. The sample with a low synthesis temperature (150 degrees C) shows the highest capacity (320 mA h g-1, 2-4.8 V) but the capacity decreases intensely to 62% after 50 cycles. The sample with the higher synthesis temperature (200 degrees C) shows better cycling stability with 85% capacity retention after 50 cycles. This study elucidates the roles of cation disorder as well as the spinel phase on the high-capacity cathode and provides an understanding of their electrochemical behaviors.
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Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
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