Cycling performance of lithium-ion polymer cells assembled with a cross-linked composite polymer electrolyte using a fibrous polyacrylonitrile membrane and vinyl-functionalized SiO2 nanoparticles
- Cycling performance of lithium-ion polymer cells assembled with a cross-linked composite polymer electrolyte using a fibrous polyacrylonitrile membrane and vinyl-functionalized SiO2 nanoparticles
- 신원경; 유지현; 최원창; 정경윤; 장승순; 김동원
- lithium-ion polymer cells; cross-linked composite; polymer electrolyte; SiO2 nanoparticles
- Issue Date
- Journal of materials chemistry. A, Materials for energy and sustainability
- VOL 3, NO 23, 12163-12170
- Vinyl-functionalized SiO2 nanoparticles were synthesized and uniformly dispersed on the surface of a fibrous polyacrylonitrile (PAN) membrane for use as cross-linking sites. A composite polymer electrolyte was prepared by in situ cross-linking between vinyl-functionalized SiO2 particles on the PAN membrane and the electrolyte precursor containing tri(ethylene glycol) diacrylate. The cross-linked composite polymer electrolyte effectively encapsulated the electrolyte solution without leakage. It exhibited good thermal stability as well as favorable interfacial characteristics toward electrodes. Lithium-ion polymer cells composed of a graphite negative electrode and a LiNi0.8Co0.15Al0.05O2 positive electrode were assembled with the in situ cross-linked composite polymer electrolyte. The cells with cross-linked composite polymer electrolytes using the fibrous PAN membrane and vinyl-functionalized SiO2 particles exhibited high discharge capacity and good capacity retention at both ambient temperature and elevated temperature.
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