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Highlights: [•] SiGe porous nanorod arrays were synthesized via template-assisted method. [•] The SiGe porous nanorod arrays were used as anode materials of Li-ion batteries. [•] The SiGe porous nanorod arrays show better performance than planar electrode. [•] The porous structure and addition of Ge is responsible for the good performance. [ABSTRACT FROM AUTHOR]

Abstract: We demonstrate the synthesis of order-aligned Mn3O4 nanostructures by electrochemically depositing Mn3O4 on a pre-fabricated Cu nanowire array current collector. When used as an electrode for lithium-ion batteries, it exhibits a capacity up to 637 and 494 mA h g−1 after 100 cycles at a current rate of 10 C and 20 C (10 C = 9.4 A g−1), respectively. The excellent cycling performance and superior rate capability can be attributed to the good electrical contact, fast electron transport and good strain accommodation of the order-aligned nanostructured electrodes. The relationship between the thickness of the Mn3O4 film and its electrochemical performance has also been investigated. [Copyright &y& Elsevier]