Figure 1 illustrates the photograph of the as-prepared ceramic membrane which perfectly retained its shape and size even after swelling with the liquid electrolyte solution. Figure 2a, b (SEM images) reveals the surface morphology of the ceramic membrane at two different magnifications. It can be seen that the ceramic particles are homogeneously he. The characteristics at the lithium metal–electrolyte separator interface critically influence the long-term cell performances such as cyclability, cycling performance at high rate and safety. Although lithium metal possesses a very high theoretical specific capacity of 3,860 mA g−1, its thermodynamic instability leads to the formation of a solid el. In order to explore the applicability of the ceramic membrane as Li-ion battery separator, after activation by soaking in the non-aqueous LiPF6-based liquid electrolyte, it was assembled in a lithium cell having the composition Li/CM/LiFePO4, as described in the experimental section, and the results are shown in Fig. 6a, b. In particular, plot (a).
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Can ceramic Nanoparticle-coated membrane improve lithium-ion battery performance?
By means of melt-electrospinning and magnetron sputtering, the as-fabricated ceramic nanoparticle-coated membrane showed improved thermal stability, electrolyte uptake and affinity, lowered impedance, and interfacial resistance, as well as enhanced discharge capacity and cycling performance in the lithium-ion battery. 2. Results and Discussion 2.1.
Are ceramic Nanoparticle-coated separators effective in lithium-ion batteries?
Performance of these ceramic nanoparticle-coated separators in a lithium-ion battery demonstrated an improved discharge capacity of 161.5 mAh/g and more than 84.3% capacity retention rate after 100 cycles.
Should lithium-ion battery separators be coated with ceramic layers?
Coating commercial lithium-ion battery separators with ceramic layers, such as SiO 2, Al 2 O 3, ZrO2, TiO 2, and CeO 2, (14−19) has been extensively explored as an effective and economic way to improve the thermal stability and wettability of the separator. However, the conventional ceramic coating can also lead to several intrinsic disadvantages.
Which Nanoparticle-coated nanofiber membranes are prepared by melt-electrospinning and magnetron sputter?
Here, a series of ceramic nanoparticle-coated nanofiber membranes, including Al 2 O 3 /poly (vinylidene fluoride) (PVDF), SiO 2 /PVDF, and Al 2 O 3 /SiO 2 /PVDF, were prepared by melt-electrospinning and magnetron sputtering deposition.
Do coated ceramic nanoparticles exist on the Me-PVDF membrane?
The presence of inorganic elements of coated ceramic nanoparticles on the ME-PVDF membrane was investigated using energy-dispersive spectroscopy (EDS) (Quantax400, Bruker, German). where S0 and ST refer to the area of the membrane before and after thermal treatment, respectively.
How to sputter a me-PVDF membrane?
Immediately after sputter-coating, the ceramic nanoparticle-coated ME-PVDF membrane was further pressed using a hot press (Carver 4128, Carver Company, USA) at 75 °C and 10 000 psi for 10 min to ensure a flat surface for the lithium-ion battery separator application. Table 2. Specific Sputtering Parameters Used for the Three ME-PVDF Membranes 4.2.