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Taeseup Song, Huanyu Cheng, Kaitlin Town, Hyunjung Park, Robert W. Black, Sangkyu Lee, Won Il Park, Yonggang Huang, John A. Rogers, Linda F. Nazar and Ungyu Paik Electrochemical Properties of Si-Ge Heterostructures as an Anode Material for Lithium Ion Batteries Advanced Functional Materials 24

Version of Record online: 17 OCT 2013 | DOI: 10.1002/adfm.201302122

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Si-Ge and Ge-Si core–shell nanowires are synthesized to systematically study the structural effect of Si-Ge heterogeneous nanostructures on both mechanics and kinetics through theoretical analysis and detailed experimental results. The Si-Ge core–shell nanowires show a much improved electrochemical performance, especially cycle performance and rate capability, compared to those of the Ge-Si core–shell nanowires electrode.

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