Open AccessElectrospun SiO2/PVDF copolymer composite nanofiber: effect of SiO2 content on nanostructure, morphology, and thermal property
Author(s) -
Muhamad Nasir,
Putri Putih Puspa Asri,
Rana Ida Sugatri
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/426/1/012060
Subject(s) - nanofiber , materials science , electrospinning , crystallinity , composite number , chemical engineering , fourier transform infrared spectroscopy , composite material , nanoparticle , nanotechnology , polymer , engineering
A separator is an important part of lithium-ion batteries. Nanofiber separator is one promising material to improve the performance of lithium-ion batteries. SiO 2 /cPVDF composite nanofiber was successfully synthesis by the electrospinning process. SiO 2 nanoparticle, cPVDF, and N-N DMAc were used to synthesis composite nanofiber. SiO 2 content influences nanostructure, morphology, diameter and thermal property of nanofiber. Nanofiber separator prepared with the optimum condition of flow rate 0,004 mL/min, voltage 22 kV, and the distance to collector 13 cm. Structure of nanofiber separator was analyzed with ATR-FTIR. FTIR vibration band peak at 1057.8 cm −1 839.4 cm −1 and 761.3 cm −1 were related to Si-OH functional group, a distinctive β phase crystal and α phase crystal, respectively. The average diameter of cPVDF nanofiber, SiO 2 /cPVDF (0.5%) nanofiber, SiO 2 /cPVDF (0.75%), and SiO 2 /cPVDF (1%) were 648.3 nm, 320.6, 347.1, and 388.8 nm, respectively. Effect of addition of silica nanoparticles decreased the average diameter nanofiber. Electrospun SiO 2 /cPVDF composite nanofiber also showed different thermal behavior under different gases conditions in TGA study, and it is observed that the nanofiber separator could stand until near 400°C before the main chain’s degradation occur. XRD and DSC analysis showed that increasing of SiO 2 content decreased crystallinity of nanofiber composite. Water contact angle experimental results of SiO 2 /cPVDF composite nanofiber revealed an improvement of hydrophobicity with the addition of SiO 2 on nanofiber composite.