کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1295976 | 1498292 | 2013 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Carbon-coated TiP2O7 with improved cyclability in aqueous electrolytes Carbon-coated TiP2O7 with improved cyclability in aqueous electrolytes](/preview/png/1295976.png)
• Carbon-coated TiP2O7 is obtained by an all-in-one sintering method.
• The sintering temperature is greatly reduced from 1000 centigrade to 700 centigrade.
• TiP2O7/LiMn2O4 aqueous battery is fabricated and shows good cycling performance.
In this paper, porous and highly crystalline carbon-coated TiP2O7 has been prepared by a sucrose assisted all-in-one sintering method at a much lower temperature (700 °C) rather than the traditional solid-state reaction synthesis (1000 °C). The prepared TiP2O7 is coated by a nanometer-thick carbon film with improved conductivity and stability in water. The electrochemical performances of this material are found greatly enhanced. The carbon-coated TiP2O7/LiMn2O4 system in 1 mol L −1 Li2SO4 aqueous electrolyte delivers discharge capacities of 86 mAh g −1 and 40 mAh g −1 at the rates of 0.25 and 10 °C, respectively. Furthermore, it also exhibits an excellent cycling stability with capacity retention of 85% over 100 cycles, which is much better than the bared TiP2O7.
Journal: Solid State Ionics - Volumes 249–250, 1 November 2013, Pages 72–77