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Article: Anionic defect-enriched ZnMn2O4 nanorods with boosting pseudocapacitance for high-efficient and durable Li/Na storage

TitleAnionic defect-enriched ZnMn2O4 nanorods with boosting pseudocapacitance for high-efficient and durable Li/Na storage
Authors
KeywordsOxygen vacancies
ZnMn2O4
Pseudocapacitance
Nanorods
Lithium/sodium storage
Issue Date2021
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cej
Citation
Chemical Engineering Journal, 2021, v. 406, p. article no. 126133 How to Cite?
AbstractAnionic defect (oxygen vacancies)-enriched ZnMn2O4 nanorods (OZMO) were manufactured through a facile coprecipitation/chemical reduction route. The synergetic mechanism of rich oxygen vacancies, abundant mesopores, and prominent pseudocapacitance endows the OZMO nanorods with long-term chemical durability for high-efficient lithium/sodium storage. When evaluated as anodes for lithium-ion batteries, the OZMO electrode exhibits a conspicuous reversible capacity of 1566.7 mAh g−1 after 50 cycles at 0.1 A g−1, remarkable cyclability with 380.1 mAh g−1 after 1000 cycles at an ultrahigh current density of 10 A g−1, as well as a good environmental adaptation with 568.6 and 811.4 mAh g−1 at −5 °C and 55 °C. For sodium-ion batteries, the OZMO electrode delivers a stable discharge capacity of 110.8 mAh g−1 after 1000 cycles at a large current density of 1 A g−1. The UV–Vis diffusive reflectance spectrum shows that the OZMO sample has a narrow bandgap, thus improving the electrical conductivity. Moreover, this strategy may increase the active sites, which provides a large electrolyte/electrode contact area and shortens the diffusion distance for both ions and electrons, thereby buffering the volume variation originated from the repeated Li+/Na+ intercalation/deintercalation process.
Persistent Identifierhttp://hdl.handle.net/10722/295523
ISSN
2019 Impact Factor: 10.652
2015 SCImago Journal Rankings: 1.743
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCheng, S-
dc.contributor.authorRu, Q-
dc.contributor.authorGao, Y-
dc.contributor.authorZhen, M-
dc.contributor.authorChen, F-
dc.contributor.authorWei, L-
dc.contributor.authorLing, FCC-
dc.date.accessioned2021-01-25T11:16:05Z-
dc.date.available2021-01-25T11:16:05Z-
dc.date.issued2021-
dc.identifier.citationChemical Engineering Journal, 2021, v. 406, p. article no. 126133-
dc.identifier.issn1385-8947-
dc.identifier.urihttp://hdl.handle.net/10722/295523-
dc.description.abstractAnionic defect (oxygen vacancies)-enriched ZnMn2O4 nanorods (OZMO) were manufactured through a facile coprecipitation/chemical reduction route. The synergetic mechanism of rich oxygen vacancies, abundant mesopores, and prominent pseudocapacitance endows the OZMO nanorods with long-term chemical durability for high-efficient lithium/sodium storage. When evaluated as anodes for lithium-ion batteries, the OZMO electrode exhibits a conspicuous reversible capacity of 1566.7 mAh g−1 after 50 cycles at 0.1 A g−1, remarkable cyclability with 380.1 mAh g−1 after 1000 cycles at an ultrahigh current density of 10 A g−1, as well as a good environmental adaptation with 568.6 and 811.4 mAh g−1 at −5 °C and 55 °C. For sodium-ion batteries, the OZMO electrode delivers a stable discharge capacity of 110.8 mAh g−1 after 1000 cycles at a large current density of 1 A g−1. The UV–Vis diffusive reflectance spectrum shows that the OZMO sample has a narrow bandgap, thus improving the electrical conductivity. Moreover, this strategy may increase the active sites, which provides a large electrolyte/electrode contact area and shortens the diffusion distance for both ions and electrons, thereby buffering the volume variation originated from the repeated Li+/Na+ intercalation/deintercalation process.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cej-
dc.relation.ispartofChemical Engineering Journal-
dc.subjectOxygen vacancies-
dc.subjectZnMn2O4-
dc.subjectPseudocapacitance-
dc.subjectNanorods-
dc.subjectLithium/sodium storage-
dc.titleAnionic defect-enriched ZnMn2O4 nanorods with boosting pseudocapacitance for high-efficient and durable Li/Na 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.cej.2020.126133-
dc.identifier.hkuros321010-
dc.identifier.volume406-
dc.identifier.spagearticle no. 126133-
dc.identifier.epagearticle no. 126133-
dc.identifier.isiWOS:000600989100001-
dc.publisher.placeNetherlands-

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