@article{Xue2021, 
author = {Yanchun Xue and Xingmei Guo and Mengrong Wu and Jiale Chen and Mengting Duan and Jing Shi and Junhao Zhang and Fu Cao and Yuanjun Liu and Qinghong Kong},
title = {Zephyranthes-like Co2NiSe4 arrays grown on 3D porous carbon frame-work as electrodes for advanced supercapacitors and sodium-ion batteries},
year = {2021},
journal = {Nano Research},
volume = {14},
number = {10},
pages = {3598-3607},
keywords = {sodium-ion batteries, supercapacitors, synergistic effect, Co2NiSe4, three-dimensional (3D) carbon framework},
url = {https://www.sciopen.com/article/10.1007/s12274-021-3640-4},
doi = {10.1007/s12274-021-3640-4},
abstract = {Developing suitable electrode materials for electrochemical energy storage devices by biomorph assisted design has become a fascinating topic due to the fantastic properties derived from bio-architectures. Herein, zephyranthes-like Co2NiSe4 arrays grown on butterfly wings derived three-dimensional (3D) carbon framework (Z-Co2NiSe4/BWC) is fabricated via hydrothermal assembly and further conversion method. Benefiting from its unique structure and multi-components, the obtained Z-Co2NiSe4/BWC electrode for supercapacitor delivers an excellent specific capacitance of 2, 280 F·g−1 at 1 A·g−1. Impressively, the constructed asymmetric supercapacitor using Co2NiSe4/BWC as positive electrode and activated butterfly wings carbon as negative electrode acquires a high energy density of 42.9 Wh·kg−1 at a power density of 800 W·kg−1 with robust stability of 94.6% capacitance retention at 10 A·g−1 after 5, 000 cycles. Moreover, the Z-Co2NiSe4/BWC as anode for sodium-ion batteries exhibits a high specific capacity of 568 mAh·g−1 at 0.1 A·g−1 and high cycling stability (maintaining 80.1% of the second cycle after 100 cycles). The outstanding electrochemical performances are ascribed to that the synergistic effect of bimetallic selenides and N-doped carbon improves electrochemical activities and conductivity. One-dimensional (1D) nanoneedles grown on 3D porous framework increase the exposure of redox-active sites, endow adequate transmission channels of electrons/ions, and guarantee stability of the electrode during charge/discharge processes. This study will shed light on the avenue towards extending such nanohybrids to excellent energy storage applications.}
}