Effect of nanoparticles in cathode materials for flexible Li-ion batteries
- Authors
- Lee, JW; Heo, Kookjin; Im, Jehong; Kim, Seokhun; Lee, Chang-Kee; Chang, Duck Rye; Kim, Jaekook; Lee, Jong-Won; Lim, Jinsub
- Issue Date
- Jan-2020
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Li-ion batteriesFlexible lithium ion batteryNanoparticleLiMn2O4 cathode material
- Citation
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.81, pp.278 - 286
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
- Volume
- 81
- Start Page
- 278
- End Page
- 286
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189319
- DOI
- 10.1016/j.jiec.2019.09.015
- ISSN
- 1226-086X
- Abstract
- In this article, we report the effect of using nanoparticles for LiMn2O4 cathode materials in flexible batteries with organic-inorganic hybrid electrolytes. LiMn2O4 nanoparticles for the cathode are prepared by pyro-synthesis. Electrochemical measurement indicated the discharge capacities were 118.41 and 138.12 mAhg(-1) and the coulombic efficiencies were 91.50% and 97.28% for the micro- and nano-LMO materials, respectively. This is attributed to the nano- LiMn2O4 material having particle sizes in the nanoscale dimension, and shorter diffusion paths combined with a large contact area at the electrode/electrolyte interface. Furthermore, the pouch-type cells demonstrated similar properties, with initial discharge capacities of 85.63 and 99.96 mA h g(-1) and coulomb efficiencies of 79.27% and 90.27% for the micro- and nano-LMO cells, respectively. Nanoparticles allow Li+ ions to de-intercalate and intercalate very easily because of the very short lithium diffusion distance.
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