Abstract
We present an anode material consisting of Ge–Cu nanoparticles (Ge–Cu NPs) which were fabricated by a one-step inert gas condensation method. The Ge–Cu NPs consisting of amorphous Ge and orthorhombic Cu3Ge phase were found to have good performance during the lithiation/delithiation process. Reversible discharge capacities were determined of 843, 773, 680, 516 mAh g−1 at 0.2, 0.5, 1 and 2 C, respectively, with a Coulombic efficiency higher than 96%.
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