Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage
© 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 imidazola...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Wiley
2017
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| Online Access: | http://purl.org/au-research/grants/arc/DP150104365 http://hdl.handle.net/20.500.11937/58868 |
| _version_ | 1848760362774560768 |
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| author | Liu, Y. Wang, Z. Zhong, Y. Tade, Moses Zhou, W. Shao, Zongping |
| author_facet | Liu, Y. Wang, Z. Zhong, Y. Tade, Moses Zhou, W. Shao, Zongping |
| author_sort | Liu, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 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. |
| first_indexed | 2025-11-14T10:14:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-58868 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:14:35Z |
| publishDate | 2017 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-588682023-08-02T06:39:10Z Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage Liu, Y. Wang, Z. Zhong, Y. Tade, Moses Zhou, W. Shao, Zongping © 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. 2017 Journal Article http://hdl.handle.net/20.500.11937/58868 10.1002/adfm.201701229 http://purl.org/au-research/grants/arc/DP150104365 http://purl.org/au-research/grants/arc/DP160104835 Wiley restricted |
| spellingShingle | Liu, Y. Wang, Z. Zhong, Y. Tade, Moses Zhou, W. Shao, Zongping Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage |
| title | Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage |
| title_full | Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage |
| title_fullStr | Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage |
| title_full_unstemmed | Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage |
| title_short | Molecular Design of Mesoporous NiCo2O4and NiCo2S4with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage |
| title_sort | molecular design of mesoporous nico2o4and nico2s4with sub-micrometer-polyhedron architectures for efficient pseudocapacitive energy storage |
| url | http://purl.org/au-research/grants/arc/DP150104365 http://purl.org/au-research/grants/arc/DP150104365 http://hdl.handle.net/20.500.11937/58868 |