@article {48998,
	title = {Exceptional cyclability of thermally stable PVdF-co-HFP/SiO<sub>2</sub> nanocomposite polymer electrolytes for sodium ion batteries},
	journal = {Journal of Energy Storage},
	volume = {73},
	year = {2023},
	month = {DEC },
	type = {Article},
	abstract = {<p>
	Thermally stable composite polymer electrolyte (CPE) devising PVdF-co-HFP polymer with in-situ generated silica (SiO2) as filler is synthesised via non-solvent- induced phase inversion technique. The filler loading of in-situ synthesised silica in PVdF-co-HFP is varied from 0 to 9 wt\% and its morphological, thermal and electrochemical characterization is carried out. Among the different composite electrolytes, the PVdF-co-HFP containing 6 wt\% SiO2 shows the uniform microporous structure with a highest porosity (84 \%), surface area (784.14 m(2) g(-1)), electrolyte uptake (262 \%) and electrolyte retention value (0.48). The incorporation of in-situ SiO2 on CPE shows not only the enhancement in thermal stability but also reduced thermal shrinkage with an increase in the filler content. The electrochemical studies of PVdF-co-HFP containing 6 wt\% SiO2 shows a higher ionic conductivity (0.71 mS cm(-1)) and potential stability \&gt;4.5 V verses Na/Na+. The Na-ion half-cells assembled with PVdF-co-HFP/SiO2 composite electrolyte show a specific capacity of similar to 120 mAh g(-1) at 0.3C rate in room temperature and a stable cycle performance with a Coulombic efficiency of around 100 \% for 200 cycles.</p>
},
	keywords = {Composite electrolytes, Coulombic efficiency, polymer electrolytes, Sodium ion batteries, specific capacity, thermal stability},
	issn = {2352-152X},
	doi = {10.1016/j.est.2023.109026},
	author = {Das, Akhila and Melepurakkal, Amrutha and Sreeram, Pranav and Gireesh, K. T. and Balakrishnan, Neethu T. M. and Fatima, M. J. Jabeen and Pullanchiyodan, Abhilash and Ahn, Jou-Hyeon and V. Shelke, Manjusha and Raghavan, Prasanth}
}
