Fig.1 DSC(A) and TG-DTG(B) curves of PDOMMA with a heating rate of 10 ℃/min and under a nitrogen atmosphere with a flow rate of 50 mL/min

Fig.2 Photographs of static contact angle of 1 mol/L LiPF6 in EC+DMC(volume ratio 1:1) liquid electrolyte on uncoated separator initial(A) and after 15 min(B) and on coated separator initial(A') and after 20 s(B'), respectively

Fig.3 Electrolyte uptake ability of the uncoated separator and coated separator with liquid electrolyte 1 mol/L LiPF6 in EC+DMC(volume ratio 1:1)

Fig.4 SEM images of uncoated(A) and coated(B) separators Acceleration voltage: 20 kV.

Fig.5 Alternating current impedance curve of uncoated and coated separator at room temperature SS/separator/SS cells, frequency range 1.0 MHz — 0.01 Hz, amplitude 10 mV.

Fig.6 Discharge specific capacity(A) and coulombic efficiency(B) of the Li/MCMB cells with uncoated or coated separator under 0.2C rate between the voltage ranges of 0.005—1.5 V at room temperature for 50 cycles and discharge specific capacity of Li/MCMB cells with uncoated or coated separator at various rates cycling(C)

Fig.7 Alternating current impedance curves of the Li/MCMB cells with the uncoated and coated separators after 2 cycles(A) and after 20 cycles(B) Frequency range: 1.0 MHz—0.01 Hz, amplitude 10 mV.

Fig.8 SEM images of MCMB electrodes (A) Fresh MCMB electrode; (B) MCMB electrode of Li/MCMB cell with uncoated separator after 50 cycles; (C) MCMB electrode of Li/MCMB cell with coated separator after 50 cycles. Acceleration voltage: 20 kV.