南方科技大学知识苑(SUSTech KC): Suppressing the irreversible phase transition from P2 to O2 in sodium-layered cathode via integrating P2- and O3-type structures

题名	Suppressing the irreversible phase transition from P2 to O2 in sodium-layered cathode via integrating P2- and O3-type structures
作者	Zhai，Jingjun 1; Ji，Haocheng 1; Ji，Wenhai 1; Wang，Rui 1; Huang，Zhongyuan 1; Yang，Tingting 1; Wang，Chaoqi 1; Zhang，Taolve 1; Chen，Ziwei 1; Zhao，Wenguang 1; Tayal，Akhil 2; Jin，Lei 3; Wang，Jun4 ; Xiao，Yinguo 1
通讯作者	Ji，Wenhai; Wang，Jun; Xiao，Yinguo
发表日期	2022-10-01
DOI	10.1016/j.mtener.2022.101106
发表期刊	Materials Today Energy 影响因子和分区
ISSN	2468-6069
EISSN	2468-6069
卷号	29
摘要	Layered transition metal oxides have been broadly studied due to their great potential in application as cathodes for sodium-ion batteries. However, many single-phase layered transition metal oxides, especially those crystallized in P2- or O3-type structure, possess their individual characteristics incurring unsatisfactory overall performances with respect to the reversible capacity, rate capability, and cycling stability. Here, an effective strategy of constructing the P2/O3 biphasic structure is realized in layered cathode NaNiMnTiO through Ti substitution. Through high-resolution scanning transmission electron microscopy and X-ray diffraction, the formation of P2/O3 intergrowth structure was clarified and the proportion of the two phases was determined. Benefitting from the presence of intergrowth structure, the layered cathode provides a competitive rate capability of 100 mAh/g at a high rate of 5 C as well as a prominent cycling stability of 80.04% capacity retention after 300 cycles at 5 C. The improved performance is closely related to the highly reversible phase transition process from P2/O3 to OP4/P3 with less strain and enhanced Na kinetics. These findings evidence that exploring novel multiphase cathodes is an effective approach to improve the electrochemical performances of cathode for sodium-ion batteries.
关键词	Biphasic cathode Crack Doping Phase transition Sodium-ion batteries
相关链接	[Scopus记录]
收录类别	SCI
语种	英语
学校署名	通讯
资助项目	National Key R&D Program of China[2020YFA0406203] ; National Natural Science Foundation of China["52072008","U2032167"] ; Shenzhen Fundamental Research Program[GXWD20201231165807007-20200807125314001]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000860344100003
出版者	ELSEVIER SCI LTD
Scopus记录号	2-s2.0-85138800069
来源库	Scopus
引用统计	被引频次[WOS]：26
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/402668
专题	工学院_材料科学与工程系前沿与交叉科学研究院
作者单位	1.School of Advanced Materials,Peking University,Shenzhen Graduate School,Shenzhen,518055,China 2.Deutsches Elektronen-Synchrotron DESY,Hamburg,Notkestrasse 85,D22607,Germany 3.Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons,Forschungszentrum Jülich GmbH,Jülich,52425,Germany 4.Department of Materials Science & Engineering,Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
通讯作者单位	材料科学与工程系; 前沿与交叉科学研究院
推荐引用方式 GB/T 7714	Zhai，Jingjun,Ji，Haocheng,Ji，Wenhai,et al. Suppressing the irreversible phase transition from P2 to O2 in sodium-layered cathode via integrating P2- and O3-type structures[J]. Materials Today Energy,2022,29.
APA	Zhai，Jingjun.,Ji，Haocheng.,Ji，Wenhai.,Wang，Rui.,Huang，Zhongyuan.,...&Xiao，Yinguo.(2022).Suppressing the irreversible phase transition from P2 to O2 in sodium-layered cathode via integrating P2- and O3-type structures.Materials Today Energy,29.
MLA	Zhai，Jingjun,et al."Suppressing the irreversible phase transition from P2 to O2 in sodium-layered cathode via integrating P2- and O3-type structures".Materials Today Energy 29(2022).