Ong Hui Lin
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Preferred name
Ong Hui Lin
Official Name
Ong, Hui Lin
Alternative Name
Ong, Huilin
Ong, H. L.
Lin, Ong Hui
Lin, O. H.
Lin Ong, Hui
Main Affiliation
Scopus Author ID
57189322712
Researcher ID
F-5201-2010

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  • Publication
    One-pot preparation of highly porous paddy waste derived-cellulose-silica nanocomposite membrane separator for advanced performances of supercapacitor
    (Springer, 2023)
    Md. Asadul Islam
    ;
    Ong Hui Lin
    ;
    Nur Atirah Afifah Sezali
    ;
    Al Rey Villagracia
    ;
    Hai Linh Tran
    ;
    Chih-Yi Yeh
    ;
    Cheng-Kuo Tsai
    ;
    Ruey-an Doong
    A new strategy was demonstrated to produce cellulose nanofibril-silica (CNF–SiO2) nanocomposite membrane separator for supercapacitor by one-pot synthesis of silica (SiO2) nanoparticles using different contents of tetraethyl orthosilicate (TEOS) precursor (0.9, 1.8, 2.7, 3.6 wt%). With the SiO2 nanoparticles acting as the disassembling agent, a highly porous CNF–SiO2 nanocomposite membrane was prepared using a simple solvent casting method. The CNF–SiO2 nanocomposite membrane with 1.8 wt% TEOS content (CNF-C2), exhibited the best properties with high porosity of 61%, electrolyte uptake ability of 260% and ionic conductivity of 5.0 mS cm− 1. Besides, the maximum thermal degradation temperature (Tmax) of the CNF–SiO2 nanocomposite membrane increased from 300 ℃ to 322 ℃, making it suitable for use within the operating temperatures of a supercapacitor. A symmetric supercapacitor assembled with CNF-C2 separator achieved the highest specific capacitance of 179.0 F g− 1 at 0.1 A g− 1 and energy density of 35.8 Wh kg− 1 at a power density of 240.0 W kg− 1. This CNF–SiO2 nanocomposite membrane helped the supercapacitor to achieve excellent electrochemical stability after 10,000 charge-discharge cycles with a capacitance retention and coulombic efficiency of 98.3% and 95.0%, respectively. The presented results proved that the CNF–SiO2 nanocomposite membrane is a good alternative separator in the supercapacitor application.
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