Sintesis Nanofiber NaLiTi3O7 yang Berpotensi sebagai Anode Baterai Ion Litium dengan Metode Electrospinning di NCI

Abstract

Nanofiber NaLiTi3O7 adalah material anode yang menjanjikan, untuk mengatasi permasalahan dendrit litium sehingga dapat meningkatkan kapasitas penyimpanan energi pada baterai ion litium. NaLiTi3O7 berhasil disintesis melalui metode mechanochemical milling menggunakan planetary ball mill, kemudian diproses lebih lanjut menjadi nanofiber melalui teknik electrospinning. Material NaLiTi3O7 berhasil disintesis secara mechanochemical milling dengan ukuran sebesar 688 nm dan kemurnian sebesar 94,2%. Metode electrospining berhasil memfabrikasi nanofiber NaLiTi3O7 dengan rata-rata ukuran diameter nanofiber pada sampel N1F, N2F, N3F dan N4F berturut-turut sebesar 615,367; 676,157; 717,755; dan 419,130 nm. Analisis spektrum FTIR menunjukkan Na-O berada pada bilangan gelombang 719 cm-1, Ti-O pada 470 cm-1, 702 cm-1 dan 806 cm-1 dan Li-O pada 457 cm-1. Spektrum Raman pada sampel material dan nanofiber NaLiTi3O7 menunjukkan keberadaan beberapa puncak karakteristik NaLiTi3O7 pada 195 cm-1, 235 cm-1, 679 cm-1 dan polimer (PVP dan PVDF) pada 1136 cm-1 dan 1529 cm-1.

Nanofiber NaLiTi3O7 is a promising anode material, to overcome the problem of lithium dendrites so as to increase the energy storage capacity in lithium ion batteries. NaLiTi3O7 was successfully synthesised through mechanochemical milling method using planetary ball mill, then further processed into nanofibres through electrospinning technique. NaLiTi3O7 material was successfully synthesised by mechanochemical milling with a size of 688 nm and purity by 94.2%. The electrospining method successfully fabricated NaLiTi3O7 nanofibres with the average diameter of nanofibres in samples N1F, N2F, N3F and N4F of 615.36; 676.16; 717.75; and 419.13 nm, respectively. FTIR spectrum analysis showed Na-O at wave number 719 cm-1, Ti-O at 470 cm-1, 702 cm-1 and 806 cm-1 and Li-O at 457 cm-1. The Raman spectra of NaLiTi3O7 material and nanofibre samples showed the presence of several characteristic peaks of NaLiTi3O7 at 195 cm-1, 235 cm-1, 679 cm-1 and polymers (PVP and PVDF) at 1136 cm-1 and 1529 cm-1.