Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors

Complex metal-organic frameworks used as precursors allow design and construction of various nanostructured functional materials which might not be accessible by other methods. Here, we develop a sequential chemical etching and sulfurization strategy to prepare well-defined double-shelled zinc-cobal...

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Main Authors: Zhang, Peng, Guan, Bu Yuan, Yu, Le, Lou, David Xiong Wen
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/138608
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1386082023-12-29T06:49:58Z Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors Zhang, Peng Guan, Bu Yuan Yu, Le Lou, David Xiong Wen School of Chemical and Biomedical Engineering Engineering::Chemical engineering Zeolitic Imidazolate Frameworks Double-shelled Structures Complex metal-organic frameworks used as precursors allow design and construction of various nanostructured functional materials which might not be accessible by other methods. Here, we develop a sequential chemical etching and sulfurization strategy to prepare well-defined double-shelled zinc-cobalt sulfide (Zn-Co-S) rhombic dodecahedral cages (RDCs). Yolk-shelled zinc/cobalt-based zeolitic imidazolate framework (Zn/Co-ZIF) RDCs are first synthesized by a controlled chemical etching process, followed by a hydrothermal sulfurization reaction to prepare double-shelled Zn-Co-S RDCs. Moreover, the strategy reported in this work enables easy control of the Zn/Co molar ratio in the obtained double-shelled Zn-Co-S RDCs. Owing to the structural and compositional benefits, the obtained double-shelled Zn-Co-S RDCs exhibit enhanced performance with high specific capacitance (1266 F g-1 at 1 A g-1 ), good rate capability and long-term cycling stability (91 % retention over 10,000 cycles) as a battery-type electrode material for hybrid supercapacitors. NRF (Natl Research Foundation, S’pore) Accepted version 2020-05-11T03:46:22Z 2020-05-11T03:46:22Z 2017 Journal Article Zhang, P., Guan, B. Y., Yu, L., & Lou, D. X. W. (2017). Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors. Angewandte Chemie International Edition, 56(25), 7141-7145. doi:10.1002/anie.201702649 1433-7851 https://hdl.handle.net/10356/138608 10.1002/anie.201702649 28488748 2-s2.0-85019269655 25 56 7141 7145 en Angewandte Chemie International Edition © 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Angewandte Chemie International Edition and is made available with permission of Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Chemical engineering
Zeolitic Imidazolate Frameworks
Double-shelled Structures
spellingShingle Engineering::Chemical engineering
Zeolitic Imidazolate Frameworks
Double-shelled Structures
Zhang, Peng
Guan, Bu Yuan
Yu, Le
Lou, David Xiong Wen
Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors
description Complex metal-organic frameworks used as precursors allow design and construction of various nanostructured functional materials which might not be accessible by other methods. Here, we develop a sequential chemical etching and sulfurization strategy to prepare well-defined double-shelled zinc-cobalt sulfide (Zn-Co-S) rhombic dodecahedral cages (RDCs). Yolk-shelled zinc/cobalt-based zeolitic imidazolate framework (Zn/Co-ZIF) RDCs are first synthesized by a controlled chemical etching process, followed by a hydrothermal sulfurization reaction to prepare double-shelled Zn-Co-S RDCs. Moreover, the strategy reported in this work enables easy control of the Zn/Co molar ratio in the obtained double-shelled Zn-Co-S RDCs. Owing to the structural and compositional benefits, the obtained double-shelled Zn-Co-S RDCs exhibit enhanced performance with high specific capacitance (1266 F g-1 at 1 A g-1 ), good rate capability and long-term cycling stability (91 % retention over 10,000 cycles) as a battery-type electrode material for hybrid supercapacitors.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Zhang, Peng
Guan, Bu Yuan
Yu, Le
Lou, David Xiong Wen
format Article
author Zhang, Peng
Guan, Bu Yuan
Yu, Le
Lou, David Xiong Wen
author_sort Zhang, Peng
title Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors
title_short Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors
title_full Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors
title_fullStr Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors
title_full_unstemmed Formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors
title_sort formation of double-shelled zinc-cobalt sulfide dodecahedral cages from bimetallic zeolitic imidazolate frameworks for hybrid supercapacitors
publishDate 2020
url https://hdl.handle.net/10356/138608
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