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Lanthanide doping induced electrochemical enhancement of Na₂Ti₃O₇ anodes for sodium-ion batteries

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dc.contributor.authorXia, J.
dc.contributor.authorZhao, H.
dc.contributor.authorPang, W.K.
dc.contributor.authorYin, Z.
dc.contributor.authorZhou, B.
dc.contributor.authorHe, G.
dc.contributor.authorGuo, Z.
dc.contributor.authorDu, Y.
dc.date.issued2018
dc.description.abstractNa₂Ti₃O₇ is considered as a promising anode material for sodium ion batteries (SIBs) due to its excellent high-rate performance compared with hard carbons. However, the electrochemical performance of Na₂Ti₃O₇ is heavily limited by its low electrical conductivity. In this study, we synthesized a series of lanthanide (Ln = La, Ce, Nd, Sm, Gd, Er, and Yb) doped microsized Na₂Ti₃O₇ anode materials and systematically studied the electrochemical performance. Compared with pristine Na₂Ti₃O₇, all the doped samples show superior electrochemical performance. Especially, the Yb³⁺ doped sample not only delivers a high reversible capacity of 89.4 mA h g⁻¹ at 30C, but also maintains 71.6 mA h g⁻¹ at 5C after 1600 cycles, nearly twice that of pristine Na₂Ti₃O₇. It is found for the first time that the enhancement in doped samples is attributed to the introduction of lanthanides which induces lattice distortion and oxygen vacancies.
dc.description.statementofresponsibilityJiale Xia, Hongyang Zhao, Wei Kong Pang, Zongyou Yin, Bo Zhou, Gang He, Zaiping Guo and Yaping Du
dc.identifier.citationChemical Science, 2018; 9(14):3421-3425
dc.identifier.doi10.1039/c7sc05185a
dc.identifier.issn2041-6520
dc.identifier.issn2041-6539
dc.identifier.orcidGuo, Z. [0000-0003-3464-5301]
dc.identifier.urihttps://hdl.handle.net/2440/132797
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.relation.granthttp://purl.org/au-research/grants/arc/FT150100109
dc.relation.granthttp://purl.org/au-research/grants/arc/FT160100251
dc.relation.granthttp://purl.org/au-research/grants/arc/DP170102406
dc.rightsThis journal is © The Royal Society of Chemistry 2018. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
dc.source.urihttps://doi.org/10.1039/c7sc05185a
dc.titleLanthanide doping induced electrochemical enhancement of Na₂Ti₃O₇ anodes for sodium-ion batteries
dc.title.alternativeLanthanide doping induced electrochemical enhancement of Na(2)Ti(3)O(7) anodes for sodium-ion batteries
dc.typeJournal article
pubs.publication-statusPublished

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