Abstract
In this work, hierarchical hollow-branch CoO nanorod arrays are synthesized by an electrodeposited template method. Interestingly, the as-prepared hierarchical CoO arrays possess combined properties of hollow core and interconnected nanosheet branches. As anode for lithium ion batteries, the hollow-branch CoO nanorod arrays exhibit impressive electrochemical performances with good cyclability and high-rate capability due to the unique hollow-branch architecture with fast ion/electron transfer path and sufficient contact between active materials and electrolyte. The developed methodology enables a new fabrication of hierarchical hollow metal oxides with applications in electro-catalysis, optical and electrochemical devices.
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