Hierarchical flower-like spinel manganese-based oxide nanosheets for high-performance lithium ion battery

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	Hierarchical flower-like spinel manganese-based oxide nanosheets for high-performance lithium ion battery
其他题名	Hierarchical flower-like spinel manganese-based oxide nanosheets for high-performance lithium ion battery
	Zhao Quanqing 1; Guo Zefeng 2; Wu Yu 1; Wang Liqin 1; Han Zhanli 1; Ma Xilan 1; Zhu Youqi 1; Gao Chuanbao 1
	2019
发表期刊	SCIENCE CHINA-MATERIALS
ISSN	2095-8226
卷号	62 期号:10 页码:1385-1392
摘要	Hierarchical flower-structured two-dimensional (2D) nanosheet is favorable for electrochemical reactions. The unique structure not only exposes the maximized active sites and shortens ion/electron diffusion channels, but also inhibits the structural strain during cycling processes. Herein, we report the hierarchical flower-like pure spinel manganese-based oxide nanosheets synthesized via a template-orientated strategy. The oriented template is fabricated by decomposition of carbonate obtained from "bubble reaction" via an alcohol-assisted hydrothermal process. The resultant spinel manganese-based oxide nanosheets simultaneously possess excellent rate capability and cycling stability. The high-voltage LiNi0.5Mn1.5O4 (LNMO-HF) has a uniform phase distribution without the common impurity phase LixNi1-xO2 and NixO. Besides, the LNMO-HF delivers high discharge capacity of 142.6 mA h g(-1) with specific energy density of 660.7 W h kg(-1) at 1 C under 55 degrees C. More importantly, the template-orientated strategy can be extended to the synthesis of LiMn2O4 (LMO), which can achieve 88.12% capacity retention after 1000 cycles.
其他摘要	Hierarchical flower-structured two-dimensional(2D) nanosheet is favorable for electrochemical reactions. The unique structure not only exposes the maximized active sites and shortens ion/electron diffusion channels, but also inhibits the structural strain during cycling processes. Herein, we report the hierarchical flower-like pure spinel manganese-based oxide nanosheets synthesized via a template-orientated strategy. The oriented template is fabricated by decomposition of carbonate obtained from “bubble reaction” via an alcoholassisted hydrothermal process. The resultant spinel manganese- based oxide nanosheets simultaneously possess excellent rate capability and cycling stability. The high-voltage LiNi_(0.5)Mn_(1.5)O_4(LNMO-HF) has a uniform phase distribution without the common impurity phase Li_xNi_(1–x)O_2 and NixO. Besides, the LNMO-HF delivers high discharge capacity of 142.6 mA h g~(–1) with specific energy density of 660.7 W h kg~(–1) at 1 C under 55℃. More importantly, the template-orientated strategy can be extended to the synthesis of LiMn_2O_4(LMO), which can achieve 88.12% capacity retention after 1000 cycles.
关键词	ELECTROCHEMICAL PERFORMANCE CATHODE MATERIALS LINI0.5MN1.5O4 LINI1/3CO1/3MN1/3O2 FRAMEWORK HOLLOW GROWTH PLANES CUBES ANODE nanosheet flower-like structure manganese-based oxide lithium ion battery
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:6579909
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/146675
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Shuozhou Coal Co Ltd, Datong Coal Mine Grp, Huairen 038300, Peoples R China
推荐引用方式 GB/T 7714	Zhao Quanqing,Guo Zefeng,Wu Yu,et al. Hierarchical flower-like spinel manganese-based oxide nanosheets for high-performance lithium ion battery[J]. SCIENCE CHINA-MATERIALS,2019,62(10):1385-1392.
APA	Zhao Quanqing.,Guo Zefeng.,Wu Yu.,Wang Liqin.,Han Zhanli.,...&Gao Chuanbao.(2019).Hierarchical flower-like spinel manganese-based oxide nanosheets for high-performance lithium ion battery.SCIENCE CHINA-MATERIALS,62(10),1385-1392.
MLA	Zhao Quanqing,et al."Hierarchical flower-like spinel manganese-based oxide nanosheets for high-performance lithium ion battery".SCIENCE CHINA-MATERIALS 62.10(2019):1385-1392.