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Article: A Robust Hybrid Zn-Battery with Ultralong Cycle Life

TitleA Robust Hybrid Zn-Battery with Ultralong Cycle Life
Authors
KeywordsHybrid zinc-battery
NiCo2O4 nanowire
redox reaction
zinc−air battery
zinc−nickel battery
Issue Date2017
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/nanolett
Citation
Nano Letters, 2017, v. 17 n. 1, p. 156-163 How to Cite?
AbstractAdvanced batteries with long cycle life and capable of harnessing more energies from multiple electrochemical reactions are both fundamentally interesting and practically attractive. Herein, we report a robust hybrid zinc-battery that makes use of transition-metal-based redox reaction (M-O-OH → M-O, M = Ni and Co) and oxygen reduction reaction (ORR) to deliver more electrochemical energies of comparably higher voltage with much longer cycle life. The hybrid battery was constructed using an integrated electrode of NiCo2O4 nanowire arrays grown on carbon-coated nickel foam, coupled with a zinc plate anode in alkaline electrolyte. Benefitted from the M-O/M-O-OH redox reactions and rich ORR active sites in NiCo2O4, the battery has concurrently exhibited high working voltage (by M-O-OH → M-O) and high energy density (by ORR). The good oxygen evolution reaction (OER) activity of the electrode and the reversible M-O ↔ M-O-OH reactions also enabled smooth recharging of the batteries, leading to excellent cycling stabilities. Impressively, the hybrid batteries maintained highly stable charge-discharge voltage profile under various testing conditions, for example, almost no change was observed over 5000 cycles at a current density of 5 mA cm-2 after some initial stabilization. With merits of higher working voltage, high energy density, and ultralong cycle life, such hybrid batteries promise high potential for practical applications.
Persistent Identifierhttp://hdl.handle.net/10722/247653
ISSN
2017 Impact Factor: 12.08
2015 SCImago Journal Rankings: 9.006
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, B-
dc.contributor.authorQuan, J-
dc.contributor.authorLoh, A-
dc.contributor.authorChai, J-
dc.contributor.authorChen, Y-
dc.contributor.authorTan, C-
dc.contributor.authorGe, X-
dc.contributor.authorHor, TSA-
dc.contributor.authorLiu, Z-
dc.contributor.authorZhang, H-
dc.contributor.authorZong, Y-
dc.date.accessioned2017-10-18T08:30:30Z-
dc.date.available2017-10-18T08:30:30Z-
dc.date.issued2017-
dc.identifier.citationNano Letters, 2017, v. 17 n. 1, p. 156-163-
dc.identifier.issn1530-6984-
dc.identifier.urihttp://hdl.handle.net/10722/247653-
dc.description.abstractAdvanced batteries with long cycle life and capable of harnessing more energies from multiple electrochemical reactions are both fundamentally interesting and practically attractive. Herein, we report a robust hybrid zinc-battery that makes use of transition-metal-based redox reaction (M-O-OH → M-O, M = Ni and Co) and oxygen reduction reaction (ORR) to deliver more electrochemical energies of comparably higher voltage with much longer cycle life. The hybrid battery was constructed using an integrated electrode of NiCo2O4 nanowire arrays grown on carbon-coated nickel foam, coupled with a zinc plate anode in alkaline electrolyte. Benefitted from the M-O/M-O-OH redox reactions and rich ORR active sites in NiCo2O4, the battery has concurrently exhibited high working voltage (by M-O-OH → M-O) and high energy density (by ORR). The good oxygen evolution reaction (OER) activity of the electrode and the reversible M-O ↔ M-O-OH reactions also enabled smooth recharging of the batteries, leading to excellent cycling stabilities. Impressively, the hybrid batteries maintained highly stable charge-discharge voltage profile under various testing conditions, for example, almost no change was observed over 5000 cycles at a current density of 5 mA cm-2 after some initial stabilization. With merits of higher working voltage, high energy density, and ultralong cycle life, such hybrid batteries promise high potential for practical applications.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/nanolett-
dc.relation.ispartofNano Letters-
dc.subjectHybrid zinc-battery-
dc.subjectNiCo2O4 nanowire-
dc.subjectredox reaction-
dc.subjectzinc−air battery-
dc.subjectzinc−nickel battery-
dc.titleA Robust Hybrid Zn-Battery with Ultralong Cycle Life-
dc.typeArticle-
dc.identifier.emailHor, TSA: andyhor@hku.hk-
dc.identifier.authorityHor, TSA=rp02077-
dc.identifier.doi10.1021/acs.nanolett.6b03691-
dc.identifier.pmid27936783-
dc.identifier.hkuros280176-
dc.identifier.volume17-
dc.identifier.issue1-
dc.identifier.spage156-
dc.identifier.epage163-
dc.identifier.isiWOS:000392036600023-
dc.publisher.placeUnited States-

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