Porous ZnCo 2 O 4 nanoparticles derived from a new mixed-metal organic framework for supercapacitors

Handle URI:
http://hdl.handle.net/10754/599341
Title:
Porous ZnCo 2 O 4 nanoparticles derived from a new mixed-metal organic framework for supercapacitors
Authors:
Chen, Siru; Xue, Ming; Li, Yanqiang; Pan, Ying; Zhu, Liangkui; Zhang, Daliang; Fang, Qianrong; Qiu, Shilun
Abstract:
Cobalt-based oxides have been shown to be promising materials for application in high-energy-density Li-ion batteries and supercapacitors. In this paper, we report a new and simple strategy for the synthesis of a mixed-metal spinel phase (ZnCo2O4) from a zinc and cobalt mixed-metal organic framework (JUC-155). It is important to rationally design a MOF with a precise ratio (Co/Zn) and a synthetic process that is simple and time saving. After solid-state annealing of the mixed-metal MOF precursor at 400 °C for two hours, a pure ZnCo2O4 phase with a high surface area (55 cm2 g−1) was obtained. When used as electrode materials for supercapacitors, an exceptionally high specific capacitance of 451 F g−1 was obtained at the scan rate of 5 mV s−1. The capacitance loss after 1500 cycles was only 2.1% at a current density of 2 A g−1, indicating that this phase has an excellent cycling stability. These remarkable electrochemical performances suggest that this phase is potentially promising for application as an efficient electrode in electrochemical capacitors.
Citation:
Chen S, Xue M, Li Y, Pan Y, Zhu L, et al. (2015) Porous ZnCo 2 O 4 nanoparticles derived from a new mixed-metal organic framework for supercapacitors . Inorg Chem Front 2: 177–183. Available: http://dx.doi.org/10.1039/c4qi00167b.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Inorg. Chem. Front.
KAUST Grant Number:
CRG-1-2012-LAI-009
Issue Date:
2015
DOI:
10.1039/c4qi00167b
Type:
Article
ISSN:
2052-1553
Sponsors:
This work was supported by the National Natural Science Foundation of China (21390394), the National Basic Research Program of China (2012CB821700), NSFC (21261130584, 11227403, 21201076, and 21101072), “111” project (B07016), Award Project of KAUST (CRG-1-2012-LAI-009), and China Scholarship Council (CSC) for a scholarship (M.X.).
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Full metadata record

DC FieldValue Language
dc.contributor.authorChen, Siruen
dc.contributor.authorXue, Mingen
dc.contributor.authorLi, Yanqiangen
dc.contributor.authorPan, Yingen
dc.contributor.authorZhu, Liangkuien
dc.contributor.authorZhang, Daliangen
dc.contributor.authorFang, Qianrongen
dc.contributor.authorQiu, Shilunen
dc.date.accessioned2016-02-28T05:49:34Zen
dc.date.available2016-02-28T05:49:34Zen
dc.date.issued2015en
dc.identifier.citationChen S, Xue M, Li Y, Pan Y, Zhu L, et al. (2015) Porous ZnCo 2 O 4 nanoparticles derived from a new mixed-metal organic framework for supercapacitors . Inorg Chem Front 2: 177–183. Available: http://dx.doi.org/10.1039/c4qi00167b.en
dc.identifier.issn2052-1553en
dc.identifier.doi10.1039/c4qi00167ben
dc.identifier.urihttp://hdl.handle.net/10754/599341en
dc.description.abstractCobalt-based oxides have been shown to be promising materials for application in high-energy-density Li-ion batteries and supercapacitors. In this paper, we report a new and simple strategy for the synthesis of a mixed-metal spinel phase (ZnCo2O4) from a zinc and cobalt mixed-metal organic framework (JUC-155). It is important to rationally design a MOF with a precise ratio (Co/Zn) and a synthetic process that is simple and time saving. After solid-state annealing of the mixed-metal MOF precursor at 400 °C for two hours, a pure ZnCo2O4 phase with a high surface area (55 cm2 g−1) was obtained. When used as electrode materials for supercapacitors, an exceptionally high specific capacitance of 451 F g−1 was obtained at the scan rate of 5 mV s−1. The capacitance loss after 1500 cycles was only 2.1% at a current density of 2 A g−1, indicating that this phase has an excellent cycling stability. These remarkable electrochemical performances suggest that this phase is potentially promising for application as an efficient electrode in electrochemical capacitors.en
dc.description.sponsorshipThis work was supported by the National Natural Science Foundation of China (21390394), the National Basic Research Program of China (2012CB821700), NSFC (21261130584, 11227403, 21201076, and 21101072), “111” project (B07016), Award Project of KAUST (CRG-1-2012-LAI-009), and China Scholarship Council (CSC) for a scholarship (M.X.).en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titlePorous ZnCo 2 O 4 nanoparticles derived from a new mixed-metal organic framework for supercapacitorsen
dc.typeArticleen
dc.identifier.journalInorg. Chem. Front.en
dc.contributor.institutionState Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. Chinaen
kaust.grant.numberCRG-1-2012-LAI-009en
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