Application of zeolites as separators in lithium ion batteries

Clean energies, including lithium ion batteries (LIB), play an essential role in meeting the growing energy needs of contemporary societies. The notable features of lithium-ion batteries include light weight, high energy capacity per unit volume, long life, and high operational efficiency [۱]. The main components of LIB are: anode, cathode, electrolyte and separator. A good separator has characteristics such as high chemical stability, low thickness, high strength, and high porosity, which ultimately have a great impact on the overall performance of the battery [۲]. The components used in LIB separators mainly include pure polymer membranes or composites. Combined additives, both organic and inorganic compounds can improve the overall battery performance [۲-۳].Majid Badini et al. [۴] prepared composite separators using zeolite ۱۳-X nanoparticles in PVDF. They observed that the use of a composite separator with ۸ wt% zeolite ۱۳-X increased porosity, electrolyte absorption, and ionic conductivity, and reduced thermal shrinkage which shows improved properties compared to commercial PP.WeiXiao et al. [۵] prepared a composite separator composed of NaA-type zeolite and poly (vinylidene fluoride-homa-hexafluoro-propylene) (PVDF-HFP). Zeolite NaA not only increases thermal resistance but also ensures excellent wettability. The prepared material exhibits high ionic conductivity and higher C discharge capacity compared to conventional commercial PP separators.Jiawen Zhang et al. [۶] have prepared a PVDF/ZSM-۵ nanocomposite separator through electrospinning, Due to its unique channel structure and strong Lewis acidity, ZSM-۵ zeolite increases electrolyte absorption capacity and thermal stability and improves ionic conductivity. It also exhibits excellent performance and higher C-rate capability compared to conventional commercial PP separators. According to the literature [۴-۶], zeolites can be considered as excellent separators in LIBs to improve their performance.

کلیدواژه ها:

Zeolite ، Porosity ، Separator ، Lithium ion battery ، Conductivity