Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage
dc.contributor.author | Liu, Y. | |
dc.contributor.author | Wang, Z. | |
dc.contributor.author | Zhong, Y. | |
dc.contributor.author | Tade, Moses | |
dc.contributor.author | Zhou, W. | |
dc.contributor.author | Shao, Zongping | |
dc.date.accessioned | 2017-11-28T06:37:25Z | |
dc.date.available | 2017-11-28T06:37:25Z | |
dc.date.created | 2017-11-28T06:21:45Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Liu, Y. and Wang, Z. and Zhong, Y. and Tade, M. and Zhou, W. and Shao, Z. 2017. Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage. Advanced Functional Materials. 27 (28). | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/58868 | |
dc.identifier.doi | 10.1002/adfm.201701229 | |
dc.description.abstract |
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Spinel-type NiCo 2 O 4 (NCO) and NiCo 2 S 4 (NCS) polyhedron architectures with sizes of 500–600 nm and rich mesopores with diameters of 1–2 nm are prepared facilely by the molecular design of Ni and Co into polyhedron-shaped zeolitic imidazolate frameworks as solid precursors. Both as-prepared NCO and NCS nanostructures exhibit excellent pseudocapacitance and stability as electrodes in supercapacitors. In particular, the exchange of O 2- in the lattice of NCO with S 2- obviously improves the electrochemical performance. NCS shows a highly attractive capacitance of 1296 F g -1 at a current density of 1 A g -1 , ultrahigh rate capability with 93.2% capacitance retention at 10 A g -1 , and excellent cycling stability with a capacitance retention of 94.5% after cycling at 1 A g -1 for 6000 times. The asymmetric supercapacitor with an NCS negative electrode and an active carbon positive electrode delivers a very attractive energy density of 44.8 Wh kg -1 at power density 794.5 W kg -1 , and a favorable energy density of 37.7 Wh kg -1 is still achieved at a high power density of 7981.1 W kg -1 . The specific mesoporous polyhedron architecture contributes significantly to the outstanding electrochemical performances of both NCO and NCS for capacitive energy storage. | |
dc.publisher | Wiley | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/DP150104365 | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/DP160104835 | |
dc.title | Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage | |
dc.type | Journal Article | |
dcterms.source.volume | 27 | |
dcterms.source.number | 28 | |
dcterms.source.issn | 1616-301X | |
dcterms.source.title | Advanced Functional Materials | |
curtin.accessStatus | Fulltext not available | |
curtin.faculty | Faculty of Science and Engineering |
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