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Choi, Nam-Soon
Energy Materials Lab
Research Interests
  • Rechargeable lithium battery, electrolytes for next generation Mg and Na battery

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Submicroporous/microporous and compatible/incompatible multi-functional dual-layer polymer electrolytes and their interfacial characteristics with lithium metal anode

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Title
Submicroporous/microporous and compatible/incompatible multi-functional dual-layer polymer electrolytes and their interfacial characteristics with lithium metal anode
Author
Lee, Young-GiKyhm, KwangseukChoi, Nam-SoonRyu, Kwang Sun
Keywords
Compatible layer; Cycle life; Dual-layer; Homogeneous electrolyte zone; Li+ deposition; Polymer electrolyte
Issue Date
2006-12
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.163, no.1, pp.264 - 268
Abstract
A novel multi-functional dual-layer polymer electrolyte was prepared by impregnating the interconnected pores with an ethylene carbonate (EC/dimethyl carbonate (DMC)/lithium hexafluorophosphate (LiPF6) solution. An incompatible layer is based on a microporous polyethylene (PE) and a compatible layer, based on a poly(vinylidenefluoride-co-hexafluoropropylene) (P(VdF-co-HFP)) is sub-microporous and compatible with an electrolyte solution. The Li electrode/the dual-layer polymer electrolyte/Li[Ni0.15Li0.23Mn0.62]O-2 cell showed stable cycle performance under prolonged cycle number. This behavior is due to the enhanced compatibility between the matrix polymer and the liquid electrolytes within the submicroporous compatible layer, which could lead to a controlled Li+ deposition on the Li anode surface by forming homegeneous electrolyte zone near the anode.
URI
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DOI
10.1016/j.jpowsour.2006.05.008
ISSN
0378-7753
Appears in Collections:
ECHE_Journal Papers
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