Publication: Disodium terephthalate ultrafine fibers as high performance anode material for sodium-ion batteries under high current density conditions
7
Issued Date
2018-01-01
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ISSN
19457111
00134651
00134651
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2-s2.0-85046549155
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of the Electrochemical Society. Vol.165, No.5 (2018), A1140-A1146
Suggested Citation
Worakamol Nakpetpoon, Thammasit Vongsetskul, Pimpa Limthongkul, Phontip Tammawat Disodium terephthalate ultrafine fibers as high performance anode material for sodium-ion batteries under high current density conditions. Journal of the Electrochemical Society. Vol.165, No.5 (2018), A1140-A1146. doi:10.1149/2.0821805jes Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/45525
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Title
Disodium terephthalate ultrafine fibers as high performance anode material for sodium-ion batteries under high current density conditions
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Abstract
© 2018 The Electrochemical Society. An aqueous mixture of poly(vinyl alcohol) (M.W. ∼ 8.9 × 104–9.8 × 104 g mol−1, 14% w/v) and disodium terephthalate (Na2TP) powders (6% w/v) was electrospun at 14 kV with a fiber collection distance and a feed rate of 12 cm and 0.5 mL h−1. Then, the obtained fibers were calcined at 350◦C with a heating rate of 1◦C min−1 under air for 7 h. Diameters of hollow Na2TP fibers, composed of grains with sizes of 76 ± 27 nm, are 189 ± 32 nm. Na2TP fibers are composed of ∼16% w/w Na2CO3. Na2TP structure is orthorhombic and can be indexed in a space group of Pbc21. Degree of crystallinity of Na2TP fibers is less than that of Na2TP powders. Galvanostatic curves display stable reversible capacities of Na2TP powders and fibers at ∼140 mA h g−1 and ∼110 mA h g−1, respectively, after 50 cycles at 25.5 mA g−1. On the other hand, at 255 mA g−1 and after 100 cycles, those of the powders and the fibers are ∼48 mA h g−1 and ∼70 mA h g−1, respectively. Thus, the eco-friendly Na2TP fibers are potentially used as anode materials of sodium-ion batteries under high current density.