File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Organic pillars pre-intercalated V4+-V2O5·3H2O nanocomposites with enlarged interlayer and mixed valence for aqueous Zn-ion storage

TitleOrganic pillars pre-intercalated V4+-V2O5·3H2O nanocomposites with enlarged interlayer and mixed valence for aqueous Zn-ion storage
Authors
KeywordsAqueous Zn-ion batteries
Organic PAN/THF pillars
Mixed V4+/V5+ valence
In-XRD
Issue Date2020
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/apsusc
Citation
Applied Surface Science, 2020, v. 534, p. article no. 147608 How to Cite?
AbstractAs cathodes for aqueous Zn-ion batteries, the repetitive insertion/extraction and strong polarization of Zn2+ during cycles will severely wreck the structure of layered vanadium oxides, resulting in rapid capacity recession. Hence, the ingenious strategy of PAN/THF-pillars intercalation and V4+/V5+ dual-valence regulation was designed to fabricate PAN or THF pre-intercalated V4+-V2O5·3H2O, denoted as P-VO or T-VO. Owing to the interlayer expansion of organic molecules and the electrochemical reactivity enhancement of mixed V4+/V5+ valence, severe structural collapse of cathodes and strong polarization of Zn2+ can be alleviated. Hence, P-VO and T-VO cathodes can exhibit larger interlayer distances of 13.67 and 14.41 Å, more robust construction, faster Zn2+ transmission, and better electrical conductivity. P-VO and T-VO electrodes furnish high zinc storage performance of 251 and 336 mAh g−1 at 500 mA g−1, and persistently maintain considerable reversible capacities of 133 and 100 mAh g−1 after 1000 cycles at a high current density of 10 A g−1. And the capacitive contribution ratios of P-VO and T-VO can reach up to 75% and 86.4%, respectively. Meanwhile, both two cathodes can endure extreme ambient conditions from −15 °C to 45 °C. In addition, the insertion mechanism of Zn2+ was also investigated via in-situ XRD and ex-situ XPS.
Persistent Identifierhttp://hdl.handle.net/10722/295336
ISSN
2019 Impact Factor: 6.182
2015 SCImago Journal Rankings: 0.930
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYan, HL-
dc.contributor.authorRu, Q-
dc.contributor.authorGao, P-
dc.contributor.authorShi, Z-
dc.contributor.authorGao, Y-
dc.contributor.authorChen, F-
dc.contributor.authorLing, FCC-
dc.contributor.authorWei, L-
dc.date.accessioned2021-01-11T13:58:40Z-
dc.date.available2021-01-11T13:58:40Z-
dc.date.issued2020-
dc.identifier.citationApplied Surface Science, 2020, v. 534, p. article no. 147608-
dc.identifier.issn0169-4332-
dc.identifier.urihttp://hdl.handle.net/10722/295336-
dc.description.abstractAs cathodes for aqueous Zn-ion batteries, the repetitive insertion/extraction and strong polarization of Zn2+ during cycles will severely wreck the structure of layered vanadium oxides, resulting in rapid capacity recession. Hence, the ingenious strategy of PAN/THF-pillars intercalation and V4+/V5+ dual-valence regulation was designed to fabricate PAN or THF pre-intercalated V4+-V2O5·3H2O, denoted as P-VO or T-VO. Owing to the interlayer expansion of organic molecules and the electrochemical reactivity enhancement of mixed V4+/V5+ valence, severe structural collapse of cathodes and strong polarization of Zn2+ can be alleviated. Hence, P-VO and T-VO cathodes can exhibit larger interlayer distances of 13.67 and 14.41 Å, more robust construction, faster Zn2+ transmission, and better electrical conductivity. P-VO and T-VO electrodes furnish high zinc storage performance of 251 and 336 mAh g−1 at 500 mA g−1, and persistently maintain considerable reversible capacities of 133 and 100 mAh g−1 after 1000 cycles at a high current density of 10 A g−1. And the capacitive contribution ratios of P-VO and T-VO can reach up to 75% and 86.4%, respectively. Meanwhile, both two cathodes can endure extreme ambient conditions from −15 °C to 45 °C. In addition, the insertion mechanism of Zn2+ was also investigated via in-situ XRD and ex-situ XPS.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/apsusc-
dc.relation.ispartofApplied Surface Science-
dc.subjectAqueous Zn-ion batteries-
dc.subjectOrganic PAN/THF pillars-
dc.subjectMixed V4+/V5+ valence-
dc.subjectIn-XRD-
dc.titleOrganic pillars pre-intercalated V4+-V2O5·3H2O nanocomposites with enlarged interlayer and mixed valence for aqueous Zn-ion storage-
dc.typeArticle-
dc.identifier.emailLing, FCC: ccling@hkucc.hku.hk-
dc.identifier.authorityLing, FCC=rp00747-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.apsusc.2020.147608-
dc.identifier.hkuros320821-
dc.identifier.volume534-
dc.identifier.spagearticle no. 147608-
dc.identifier.epagearticle no. 147608-
dc.identifier.isiWOS:000582367700046-
dc.publisher.placeNetherlands-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats