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The Co/SnO2 core-shell nanowire arrays were synthesized via a simple hydrothermal approach and subsequently the deposition of amorphous SnO2 layer. When used as anode materials of lithium-ion batteries, the Co/SnO2 core-shell nanowire arrays maintain at 667.9 mAh g−1 with the capacity retention of 85.7% after 100 cycles at the current density of 200 mA g−1. For comparison, the discharge capacity of...
We demonstrate the synthesis of porous Si in carbon cages (PoSi@CC) via the oxidation of magnesium silicide, coating of carbon layer and subsequent acid washing. Different from the traditional porous Si@C core-shell(PoSi@CS) structure, new structure and morphology of PoSi@CC are obtained, and better electrochemistry performance is expressed. As the anode materials of lithium-ion batteries, the PoSi@CC...
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