Zhu, Z, Chen, Z, Lin, G et al. (5 more authors) (2019) Buckled Amorphous Hollow Carbon Spheres: Facile Fabrication, Buckling Process and Applications as Electrode Materials for Supercapacitor. ACS Applied Materials & Interfaces, 11 (33). pp. 30116-30124. ISSN 1944-8244
Abstract
Buckled hollow carbon nanospheres (BHCSs) integrate several attractive properties desired for a variety of potential applications. However, the development of a feasible and simple method for preparing BHCS nanoparticles remains a great challenge. Herein, we present a facile strategy for fabricating monodisperse BHCSs via the compression of intact hollow carbon nanospheres (HCSs) with improved mechanical strength. The essence of our strategy lies in the successful preparation of robust HCSs that can sustain large mechanical deformation during compression, based on the introduction of polyvinylpyrrolidone in the synthesis of HCS templates. Both experiments and finite element analyses are conducted to probe the deformation mechanism of buckling, suggesting that the residual stress introduced by pyrolysis of precursors plays a predominant role in the buckling process. Furthermore, the use of BHCSs as high-performance supercapacitors is demonstrated. Our work provides important insights into the engineering of robust amorphous carbon nanomaterials by the template method and mechanical modulation and provides an innovative synthetic strategy for fabricating asymmetric hollow spheres with potential for a diversity of applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 American Chemical Society. This is an author produced version of a paper published in ACS Applied Materials & Interfaces. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | buckled hollow carbon spheres; buckling process; nanoindentation; finite element analyses; supercapacitor |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Molecular & Nanoscale Physics |
Depositing User: | Symplectic Publications |
Date Deposited: | 29 Jul 2019 10:17 |
Last Modified: | 26 Jul 2020 00:38 |
Status: | Published |
Publisher: | American Chemical Society |
Identification Number: | 10.1021/acsami.9b07412 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149087 |