Li2FeSiO4/C composites were one-step synthesized under hydrothermal conditions at 200 C for 72 h using glucose as carbon source. By adjusting the quantity of added glucose, we obtained varied Li2FeSiO4/C composites with different size and morphology. A series of electrochemical tests demonstrate that the Li2FeSiO4/C nanoparticles with diameters about 20 nm have higher discharge capacity, and slower capacity fading in comparison with Li2FeSiO4 and other Li2FeSiO4/C composites. Li2FeSiO4/C nanoparticles deliver a discharge capacity of 136 mAh g-1 at 0.2 C, and after 100 cycles, the discharge capacity remains 96.1%. Furthermore, Li2FeSiO4/C nanoparticles also exhibit an excellent rate capability with a capacity of about 80 mAh g-1 at 10 C.

One-step hydrothermal synthesis ofLi2FeSiO4/C composites as lithium-ionbattery cathode materials / Zhang, Meng; Chen, Qiuping; Xi, Zhixia; Hou, Yonggai; Chen, Qiuling. - In: JOURNAL OF MATERIALS SCIENCE. - ISSN 0022-2461. - STAMPA. - 47:5(2012), pp. 2328-2332. [10.1007/s10853-011-6048-9]

One-step hydrothermal synthesis ofLi2FeSiO4/C composites as lithium-ionbattery cathode materials

CHEN, QIUPING;CHEN, QIULING
2012

Abstract

Li2FeSiO4/C composites were one-step synthesized under hydrothermal conditions at 200 C for 72 h using glucose as carbon source. By adjusting the quantity of added glucose, we obtained varied Li2FeSiO4/C composites with different size and morphology. A series of electrochemical tests demonstrate that the Li2FeSiO4/C nanoparticles with diameters about 20 nm have higher discharge capacity, and slower capacity fading in comparison with Li2FeSiO4 and other Li2FeSiO4/C composites. Li2FeSiO4/C nanoparticles deliver a discharge capacity of 136 mAh g-1 at 0.2 C, and after 100 cycles, the discharge capacity remains 96.1%. Furthermore, Li2FeSiO4/C nanoparticles also exhibit an excellent rate capability with a capacity of about 80 mAh g-1 at 10 C.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2481579
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