4. CONCLUSION
In summary, a novel cellulose/CaCO3 porous membrane was
fabricated by electrospinning method. The as-prepared membrane used as
separator possesses excellent thermal and dimensional stability at harsh
temperatures, thus significantly enhancing the thermal safety of
batteries. In addition, the electrolyte uptake (234%) and ionic
conductivity (1.08 mS cm-1) of membrane are superior
to that of PP separator. Furthermore, the LiFePO4/Li
battery assembled with cellulose/CaCO3 membrane can run
for 230 cycles with 97.4% capacity retention. Taking the above
advantages into consideration, cellulose/CaCO3 membrane
manifests great potential application in sustainable and
high-performance LIBs.