Corresponding Author

Hua-feng LUO(317306472@qq.com)


To improve the electrolyte wettability and thermal resistance of separators used for lithium-ion battery, a novel cellulose acetate (CA)-based separator is facilely prepared by non-solvent induced phase separation (NIPS) wet-process and investigated in lithium-ion batteries. Systematical investigations including morphological characterization, electrolyte wettability and thermal resistance testing were carried out. The results demonstrated that the CA-based separator exhibited well developed three-dimensional porous structures with porosity up to 65%, which is 1.5 times higher than that of PE separator. The CA separator also showed excellent electrolyte uptake (285%) and thermal stability at 150 oC for 30 min. Compared with the commercial PE separator, the CA separator exhibited better electrochemical performances, achieving superior discharge C-rate capability and cycling performance.

Graphical Abstract


separator, phase inversion method, cellulose acetate, wettability, thermal resistance, electrochemistry performance

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