کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6473257 | 1424142 | 2016 | 5 صفحه PDF | دانلود رایگان |
We first report the fabrication of all one dimensional (1D) active materials based Li-ion power packs using conversion type anode (α-Fe2O3). Electrospining procedure has been used to prepare all the 1D nanostructures. Half-cell studies are performed with metallic Li to ascertain the electrochemical activity of the individual components. In order to overcome irreversible capacity loss (ICL) in α-Fe2O3, the high voltage cathode has been over lithiated electrochemically (Li1.33Ni0.5Mn1.5O4) prior to the full-cell assembly. The combined advantages of 1D nanostructure and a new over lithiation concept certainly provides the less amount of active material loading to mitigate ICL. On the other hand, all based cell Li1.33Ni0.5Mn1.5O4/1 M LiPF6 gelled PVdF-HFP/α-Fe2O3 delivered an energy density of â¼193 Wh kgâ1 with working potential of â¼3.27 V and rendered â¼88% of initial reversible capacity after 60 cycles.
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Journal: Electrochimica Acta - Volume 215, 10 October 2016, Pages 647-651