A Facile Synthesis of Urchin‐Like ZnMn <sub>2</sub> O <sub>4</sub> Architectures with Enhanced Electrochemical Lithium Storage
Xiao‐Yong Dou, Ming Chen, Jiantao Zai, Yong Jun Gong, Asma Iqbal, Qinnan Zhou, Boxu Dong, TsegayeTadesse Tsega, Rongrong Qi, Xuefeng Qian
Abstract
Abstract As conversion material, ZnMn 2 O 4 has a high theoretical specific capacity as an anode for Lithium‐ion batteries. This paper has designed a facile method to prepare urchin‐like ZnMn 2 O 4 architectures with high quality and well crystallinity. The resultant urchin‐like ZnMn 2 O 4 architectures exhibit high discharge capacity and excellent cycling stability. The initial discharge capacity of urchin‐like ZnMn 2 O 4 architectures is 1167 mAh g −1 at 0.4 A g −1 and the electrode materials could maintain high reversible capacity of 889 mAh g −1 after 150 cycles. Even in the high current density of 1 A g −1 , the electrode of urchin‐like ZnMn 2 O 4 can keep a high reversible capacity of 578 mAh g −1 after 300 cycles. The improved electrochemical performance can be ascribed to the urchin‐like architectures of the as‐prepared ZnMn 2 O 4 , which could be conducive to the transmission of lithium ions and electrons and provide sufficient void spaces to tolerate the volume change during the Li + intercalation. These results revealed that as‐prepared urchin‐like ZnMn 2 O 4 architectures would be a promising anode for high performance Lithium‐ion batteries.