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Heteroatom-doped core/shell carbonaceous framework materials : synthesis, characterization and electrochemical properties
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Zhou, Yutao, Huang, Qianye, Low, John C. T., Walton, Richard I., McNally, Tony and Wan, Chaoying (2019) Heteroatom-doped core/shell carbonaceous framework materials : synthesis, characterization and electrochemical properties. New Journal of Chemistry, 43 . 5632-5641 . doi:10.1039/C8NJ05193C ISSN 1144-0546.
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WRAP-heteroatom-doped-core-shell-carbonaceous-framework-synthesis-Wan-2019.pdf - Accepted Version - Requires a PDF viewer. Download (3747Kb) | Preview |
Official URL: http://dx.doi.org/10.1039/C8NJ05193C
Abstract
Organic-inorganic hybrid core@shell nanospherical particles with 200 nm to 600 nm in diameter were formed between cyclomatrix poly(organophosphazenes) (POP) and zeolitic imidazolate framework-8 (ZIF-8) in a methanol solution at room temperature. This facile synthesis route produced core@shell spheres with controlled structure and properties, such as mono-dispersed particles, 50 nm to 100 nm shell thickness, surface area of 1557 m2 g-1 and homogenously doped Zn and heteroatoms (N, S, P, O, Cl). The POP/ZIF-8 core@shell structures were subsequently converted into porous carbonaceous materials, and investigated as anode materials in a lithium-ion coin cell battery. It showed a stable discharge capacity of 538 mA h g-1 over 250 cycles, high rate capability (0.1 C to 1 C) and excellent capacity retention, which are promising for rapid charge-discharge applications. Higher ZIF-8 loading ratio in the core@shell structure increased the capacity of the electrode material and stablised the lithiated active materials. The facile synthesis method and the carbonaceous framework materials are applicable for high performance energy storage materials in electrochemical power devices.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||
Library of Congress Subject Headings (LCSH): | Lithium ion batteries, Electrochemistry | ||||||||
Journal or Publication Title: | New Journal of Chemistry | ||||||||
Publisher: | Royal Society of Chemistry | ||||||||
ISSN: | 1144-0546 | ||||||||
Official Date: | 2019 | ||||||||
Dates: |
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Volume: | 43 | ||||||||
Page Range: | 5632-5641 | ||||||||
DOI: | 10.1039/C8NJ05193C | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 18 March 2019 | ||||||||
Date of first compliant Open Access: | 7 March 2020 |
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