Understanding the structural evolution and Na+ kinetics in honeycomb-ordered O'3-Na3Ni2SbO6 cathodes

doi:10.1007/s12274-017-1863-1

CORC > 化学研究所 > 中国科学院化学研究所

	Understanding the structural evolution and Na+ kinetics in honeycomb-ordered O'3-Na3Ni2SbO6 cathodes
	Wang, Peng-Fei 1,2; Yao, Hu-Rong 1,2; You, Ya 1,2; Sun, Yong-Gang 1,2; Yin, Ya-Xia 1,2; Guo, Yu-Guo1,2
刊名	NANO RESEARCH
	2018-06-01
卷号	11 期号:6 页码:3258-3271
关键词	Sodium-ion Batteries (Sib) Cathode Honeycomb-ordered Structural Evolution Na++++ Kinetics
ISSN号	1998-0124
DOI	10.1007/s12274-017-1863-1
英文摘要	The development of new sodium ion battery (SIB) cathodes with satisfactory performance requires an in-depth understanding of their structure-function relationships, to rationally design better electrode materials. In this work, highly ordered, honeycomb-layered Na3Ni2SbO6 was prepared to elucidate the structural evolution and Na+ kinetics during electrochemical desodiation/sodiation processes. Structural analysis involving in situ synchrotron X-ray diffraction (XRD) experiments, electrochemical performance measurements, and electrochemical characterization (galvanostatic intermittent titration technique, GITT) methods were used to obtain new insights into the reaction mechanism controlling the (de)intercalation of sodium into the host Na3-x Ni2SbO6 structure. Two phase transitions occur (initial O'3 phase -> intermediate P'3 phase -> final O1 phase) upon Na+ extraction; the partial irreversible O'3-P'3 phase transition is responsible for the insufficient cycling stability. The fast Na+ mobility (average 10(-12) cm(2)center dot s(-1)) in the interlayer, high equilibrium voltage (3.27 V), and low voltage polarization (50 mV) establish the linkage between kinetic advantage and a good rate performance of the cathode. These new findings provide deep insight into the reaction mechanism operating in the honeycomb cathode; the present approach could be also extended to investigate other materials for SIBs.
语种	英语
出版者	TSINGHUA UNIV PRESS
WOS记录号	WOS:000433048600028
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/42837]
专题	中国科学院化学研究所
通讯作者	Yin, Ya-Xia; Guo, Yu-Guo
作者单位	1.Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, Beijing Natl Lab Mol Sci, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Peng-Fei,Yao, Hu-Rong,You, Ya,et al. Understanding the structural evolution and Na+ kinetics in honeycomb-ordered O'3-Na3Ni2SbO6 cathodes[J]. NANO RESEARCH,2018,11(6):3258-3271.
APA	Wang, Peng-Fei,Yao, Hu-Rong,You, Ya,Sun, Yong-Gang,Yin, Ya-Xia,&Guo, Yu-Guo.(2018).Understanding the structural evolution and Na+ kinetics in honeycomb-ordered O'3-Na3Ni2SbO6 cathodes.NANO RESEARCH,11(6),3258-3271.
MLA	Wang, Peng-Fei,et al."Understanding the structural evolution and Na+ kinetics in honeycomb-ordered O'3-Na3Ni2SbO6 cathodes".NANO RESEARCH 11.6(2018):3258-3271.