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Hierarchical flower-like spinel manganese-based oxide nanosheets for high-performance lithium ion battery
Alternative TitleHierarchical flower-like spinel manganese-based oxide nanosheets for high-performance lithium ion battery
Zhao Quanqing1; Guo Zefeng2; Wu Yu1; Wang Liqin1; Han Zhanli1; Ma Xilan1; Zhu Youqi1; Gao Chuanbao1
2019
Source PublicationSCIENCE CHINA-MATERIALS
ISSN2095-8226
Volume62Issue:10Pages:1385-1392
AbstractHierarchical 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.
Other AbstractHierarchical 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.
KeywordELECTROCHEMICAL 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
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China]
CSCD IDCSCD:6579909
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/146675
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.Shuozhou Coal Co Ltd, Datong Coal Mine Grp, Huairen 038300, Peoples R China
Recommended Citation
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.
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