Journal
CELLULOSE
Volume 24, Issue 4, Pages 1889-1899Publisher
SPRINGER
DOI: 10.1007/s10570-017-1225-x
Keywords
Bacterial cellulose; Nanofibrous; composite membrane; Lithium-ion battery separator; Wettability
Funding
- Scientific Innovation Team Project of the Education Department of Hubei Province [T201507]
- Wuhan Science and Technology Bureau [2016010101010016]
- Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices [HLOM142005]
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The bacterial cellulose (BC)/Al2O3 nanofibrous composite membrane as a lithium-ion battery separator has been successfully prepared by coating Al2O3 on the BC nanofibers through a simple in situ thermal decomposition of Al(NO3) (3) center dot 9H(2)O. Thermal treatment tests show that the BC/Al2O3 composite membrane is thermally stable at a high temperature of 200 degrees C while great shrinkage is observed for the commercial PP-PE-PP membrane. Moreover, the BC/Al2O3 membrane is evaluated to have large porosity and excellent electrolyte uptake, consequently giving rise to larger ionic conductivity, lower interfacial resistance as well as better electrochemical stability. The half lithium-ion battery assembled with the BC/Al2O3 separator demonstrates large discharge capacity and good cycling performance, suggesting that the BC/Al2O3 membrane can be used as a lithium-ion battery separator.
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