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Understanding the structural evolution and Na+ kinetics in honeycomb-ordered O'3-Na3Ni2SbO6 cathodes
Wang, Peng-Fei1,2; Yao, Hu-Rong1,2; You, Ya1,2; Sun, Yong-Gang1,2; Yin, Ya-Xia1,2; Guo, Yu-Guo1,2
2018-06-01
Source PublicationNANO RESEARCH
ISSN1998-0124
Volume11Issue:6Pages:3258-3271
AbstractThe 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.
KeywordSodium-ion Batteries (Sib) Cathode Honeycomb-ordered Structural Evolution Na++++ Kinetics
DOI10.1007/s12274-017-1863-1
Indexed BySCI
Language英语
WOS IDWOS:000433048600028
PublisherTSINGHUA UNIV PRESS
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/42838
Collection中国科学院化学研究所
Corresponding AuthorYin, Ya-Xia; Guo, Yu-Guo
Affiliation1.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
Recommended Citation
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.
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