摘要
We report a nature-inspired design of tree-like architecture of cuprous oxide(Cu2O)stem and cobalt oxides(CoO)branch serving as an efficient anode for sodium-ion batteries.The construction of stembranch architectures involves the growth of Cu2O nanorods and the subsequent deposition of CoO nanowires.Due to abundant active sites and full exposure to electrolyte,such a Cu2O@CoO stem-branch architecture demonstrates a robust storage toward Na^+ions,affording a capacity retention of^100%over 300 continuous cycles and a remarkable rate capability of 296 mAh g^-1 at 1 A g^-1.This result clearly shows the potential of nature-inspired materials engineering may find extensive applications in the design of high-performance electrodes for rechargeable batteries.
基金
financially supported by the National Natural Science Foundation of China(Nos.51872192,51672182 and 51772197)
the Thousand Young Talents Plan
the Jiangsu Natural Science Foundation(No.BK20180002)
the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(Nos.19KJA170001 and 17KJA430013)
the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions。
