Surfactant-Free Assembly of Mesoporous Carbon Hollow Spheres with Large Tunable Pore Sizes
- 8 April 2016
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 10 (4), 4579-4586
- https://doi.org/10.1021/acsnano.6b00723
Abstract
Mesoporous carbon hollow spheres (MCHS) have wide applications, including catalysis, absorption, and energy storage/conversion. Herein, we report a one-pot surfactant-free synthesis of MCHS using three molecules: resorcinol, formaldehyde and tetrapropyl orthosilicate. The co-condensation process between the in situ generated silica primary particles and the polymer oligomers is regulated, leading to monodispersed MCHS with adjustable pore sizes from micropores to 13.9 nm. The resultant MCHS shows excellent performance for electrochemical double-layer capacitors with high capacitance (310 F g-1 at 1 A g-1), excellent rate capability (157 F g-1 at 50 A g-1), and outstanding cycling stability (98.6 % capacity retention after 10000 cycles at 10 A g-1). Our one-pot synthesis strategy is versatile and can be extended to fabricate metal oxide@mesoporous carbon yolk-shell structures in the absence of surfactant, paving the way towards designed synthesis of nanostructured mesoporous carbon composites for various applications.Keywords
Funding Information
- Australian Research Council
- CAS-SAFEA International Partnership Program for Creative Research Teams
- Queensland Government
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