Kim, Sanghoon, De Bruyn, Mario orcid.org/0000-0002-9687-1606, Alauzun, Johan G. et al. (7 more authors) (2019) Dehydration of Alginic Acid Cryogel by TiCl4 vapor:Direct Access to Mesoporous TiO2@C Nanocomposites and Their Performance in Lithium-Ion Batteries. ChemSusChem. pp. 2660-2670. ISSN 1864-564X
Abstract
A new strategy for the synthesis of mesoporous TiO2@C nanocomposites through the direct mineralization of seaweed-derived alginic acid cryogel by TiCl4 through a solid/vapor reaction pathway is presented. In this synthesis, alginic acid cryogel can have multiple roles; i) mesoporous template, ii) carbon source, and iii) oxygen source for the TiO2 precursor, TiCl4. The resulting TiO2@alginic acid composite was transformed either into pure mesoporous TiO2 by calcination or into mesoporous TiO2@C nanocomposites by pyrolysis. By comparing with a nonporous TiO2@C composite, the importance of the mesopores on the performance of electrodes for lithium-ion batteries based on mesoporous TiO2@C composite was clearly evidenced. In addition, the carbon matrix in the mesoporous TiO2@C nanocomposite also showed electrochemical activity versus lithium ions, providing twice the capacity of pure mesoporous TiO2 or alginic acid-derived mesoporous carbon (A600). Given the simplicity and environmental friendliness of the process, the mesoporous TiO2@C nanocomposite could satisfy the main prerequisites of green and sustainable chemistry while showing improved electrochemical performance as a negative electrode for lithium-ion batteries.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Keywords: | alginic acid,cryogel,lithium-ion battery,mesoporous,TiO |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 12 Sep 2019 16:10 |
Last Modified: | 20 Dec 2024 00:16 |
Published Version: | https://doi.org/10.1002/cssc.201900781 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1002/cssc.201900781 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:150818 |
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Description: Revised ChemSusChem BOURY