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1.All batteries tested in this study were cycled for 20 cycles in the voltage range from 0.02 to 1.2 V employing a current density of 0.25 mA/cm2 and a 60 s rest period between charge/discharge cycles using a potentiostat (Arbin Electrochemical Instruments). 2.A hockey puck cell design was used employing lithium foil as an anode and 1 M LiPF6 in ethylene carbonate/dimethyl carbonate (2:1) as the electrolyte. 3.Usually the ball milling treatment was carried out with a rotation speed of 550 rpm for 7 h at room temperature. |
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