Metal-organic framework-derived hierarchical Co3O4@MnCo2O4.5 nanocubes with enhanced electrocatalytic activity for Na-O-2 batteries

doi:10.1039/c8nr08818g

	Metal-organic framework-derived hierarchical Co3O4@MnCo2O4.5 nanocubes with enhanced electrocatalytic activity for Na-O-2 batteries
	Liu, Yunzhao; Chi, Xiaowei; Han, Qi; Du, Yuexiu; Huang, Jiaqi; Lin, Xinghao; Liu, Yu
刊名	NANOSCALE
	2019-03-28
卷号	11 期号:12 页码:5285
ISSN号	2040-3364
DOI	10.1039/c8nr08818g
文献子类	Article
英文摘要	The Na-O-2 battery system is attracting increasing attention due to its superiority in specific capacity and cost. However, its practical implementation is hindered by many issues, such as high charge-discharge overpotential, limited cycling life, and poor reversibility, all of which result from the mediocre O-2 electrode. Herein, to surmount these critical challenges, hierarchical Co3O4@MnCo2O4.5 nanocubes (h-Co3O4@MnCo2O4.5 Ns) with a yolk-shell structure are designed for the first time as the novel O-2 electrode. h-Co3O4@MnCo2O4.5 Ns are synthesized from a metal-organic framework via a template-assisted method, which is demonstrated to be helpful in creating a high specific surface area of 130.4 m(2) g(-1), a hierarchical macro- and mesoporous structure, and synergistic yolk-shelled Co3O4@MnCo2O4.5 active sites. These unique structural properties endow h-Co3O4@MnCo2O4.5 Ns with remarkably enhanced electrocatalytic activity towards both the ORR and OER. The Na-O-2 battery based on h-Co3O4@MnCo2O4.5 Ns displays an ultrahigh initial discharge capacity of 8400 mA h g(-1), ultralow charge-discharge overpotential of 0.45 V, long cycling life of 135 cycles, and excellent rate capability.
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27256]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Liu, Yunzhao,Chi, Xiaowei,Han, Qi,et al. Metal-organic framework-derived hierarchical Co3O4@MnCo2O4.5 nanocubes with enhanced electrocatalytic activity for Na-O-2 batteries[J]. NANOSCALE,2019,11(12):5285.
APA	Liu, Yunzhao.,Chi, Xiaowei.,Han, Qi.,Du, Yuexiu.,Huang, Jiaqi.,...&Liu, Yu.(2019).Metal-organic framework-derived hierarchical Co3O4@MnCo2O4.5 nanocubes with enhanced electrocatalytic activity for Na-O-2 batteries.NANOSCALE,11(12),5285.
MLA	Liu, Yunzhao,et al."Metal-organic framework-derived hierarchical Co3O4@MnCo2O4.5 nanocubes with enhanced electrocatalytic activity for Na-O-2 batteries".NANOSCALE 11.12(2019):5285.