Abstract

Urchin-like Ca2Ge7O16 hollow spheres have been successfully synthesised by hydrothermal methods assisted with urea or N-methyl urea. When tested as anode materials, the as-obtained urchin-like hollow spheres consisting of nanorods with diameters of about 20 nm could deliver a capacity of 603 mA h g−1 after 200 cycles at a current density of 1000 mA g−1.

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