Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6613983 | Electrochimica Acta | 2014 | 6 Pages |
Abstract
Mesoporous polythiophene birnessite (b)-MnO2 has been synthesized by a modified interfacial method to develop cathode electrode materials for lithium batteries. The N2 adsorption/desorption isotherm test of mesoporous polythiophene MnO2 shows a type IV hysteresis loop, which is characteristic of a mesoporous structure. Mesoporous polythiophene MnO2 has a high surface area of 226 m2Â gâ1 with a pore diameter of 5.2Â nm The mesoporous polythiophene b-MnO2 cathode electrode for Li-ion battery exhibited an initial discharge capacity of 305 mAh gâ1 at a current density of 10Â mAÂ gâ1, which is almost equal to its theoretical capacity. When applying a current of 300Â mAÂ gâ1, mesoporous polythiophene MnO2 electrode shows the initial discharge capacity of 211 mAh gâ1, which is 69% of its theoretical capacity. Mesoporous polythiophene MnO2 shows high capacity and good cycle stability even at high current densities due to its high surface area and fast Li-ion diffusion path.
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Physical Sciences and Engineering
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Authors
Arjun Kumar Thapa, Bill Pandit, Rajesh Thapa, Tulashi Luitel, Hem Sharma Paudel, Gamini Sumanasekera, Mahendra K. Sunkara, Nanda Gunawardhana, Tatsumi Ishihara, Masaki Yoshio,