Submicroporous/microporous and compatible/incompatible multi-functional dual-layer polymer electrolytes and their interfacial characteristics with lithium metal anode
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- Submicroporous/microporous and compatible/incompatible multi-functional dual-layer polymer electrolytes and their interfacial characteristics with lithium metal anode
- Lee, Young-Gi; Kyhm, Kwangseuk; Choi, Nam-Soon; Ryu, Kwang Sun
- Compatible layer; Cycle life; Dual-layer; Homogeneous electrolyte zone; Li+ deposition; Polymer electrolyte
- Issue Date
- ELSEVIER SCIENCE BV
- JOURNAL OF POWER SOURCES, v.163, no.1, pp.264 - 268
- 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.
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