One-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodes
We report a rapid and energy saving one-pot synthesis method to prepare monodisperse phenolic resin spheres (PSs) under high acidic conditions. This method integrates the low-temperature polymerization and solidification processes into one procedure. The PSs have excellently thermal stability, which...
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doaj-987908fb68394176b6e3414a548552a32020-11-25T03:49:17ZengElsevierResults in Physics2211-37972020-03-0116102912One-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodesZhongguan Liang0Hui Xia1Luomeng Zhang2Hao Liu3Yuefeng Zhao4Hongjian Li5Wenke Xie6School of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, China; Corresponding authors.School of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, ChinaCollaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, China; Corresponding authors.We report a rapid and energy saving one-pot synthesis method to prepare monodisperse phenolic resin spheres (PSs) under high acidic conditions. This method integrates the low-temperature polymerization and solidification processes into one procedure. The PSs have excellently thermal stability, which shown extremely low skeleton shrinkage ratio of 9.2%–15.8% under different carbonization temperature from 600 °C to 1000 °C. The PSs can be directly converted into sulfur-doped hierarchical porous carbon spheres (HPCSs) by carbonization and KOH activation. In these unique HPCSs, the mesopores and macropores contribute to the mass transportation by reducing and smoothing the diffusion pathways, while the rich micropores ensuring the sufficient active sites to effectively charge storage. Combine with the hierarchical porous structure, high specific surface area and suitable S doping content, as a supercapacitor electrodes, the HPCSs-600 exhibit a high specific capacitance of 321 F g−1 at 0.5 A g−1, excellent rate retention of 72.9% from 0.5 to 50 A g−1, and outstanding cycling stability with 97% capacitance retention after 10 000 cycles.http://www.sciencedirect.com/science/article/pii/S221137971933565XPhenolic resin spheresThermal stabilitySulfur-dopedHierarchical porous carbon spheresSupercapacitors |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhongguan Liang Hui Xia Luomeng Zhang Hao Liu Yuefeng Zhao Hongjian Li Wenke Xie |
spellingShingle |
Zhongguan Liang Hui Xia Luomeng Zhang Hao Liu Yuefeng Zhao Hongjian Li Wenke Xie One-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodes Results in Physics Phenolic resin spheres Thermal stability Sulfur-doped Hierarchical porous carbon spheres Supercapacitors |
author_facet |
Zhongguan Liang Hui Xia Luomeng Zhang Hao Liu Yuefeng Zhao Hongjian Li Wenke Xie |
author_sort |
Zhongguan Liang |
title |
One-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodes |
title_short |
One-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodes |
title_full |
One-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodes |
title_fullStr |
One-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodes |
title_full_unstemmed |
One-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodes |
title_sort |
one-pot synthesis of monodisperse phenolic resin spheres with high thermal stability and its derived carbon spheres as supercapacitor electrodes |
publisher |
Elsevier |
series |
Results in Physics |
issn |
2211-3797 |
publishDate |
2020-03-01 |
description |
We report a rapid and energy saving one-pot synthesis method to prepare monodisperse phenolic resin spheres (PSs) under high acidic conditions. This method integrates the low-temperature polymerization and solidification processes into one procedure. The PSs have excellently thermal stability, which shown extremely low skeleton shrinkage ratio of 9.2%–15.8% under different carbonization temperature from 600 °C to 1000 °C. The PSs can be directly converted into sulfur-doped hierarchical porous carbon spheres (HPCSs) by carbonization and KOH activation. In these unique HPCSs, the mesopores and macropores contribute to the mass transportation by reducing and smoothing the diffusion pathways, while the rich micropores ensuring the sufficient active sites to effectively charge storage. Combine with the hierarchical porous structure, high specific surface area and suitable S doping content, as a supercapacitor electrodes, the HPCSs-600 exhibit a high specific capacitance of 321 F g−1 at 0.5 A g−1, excellent rate retention of 72.9% from 0.5 to 50 A g−1, and outstanding cycling stability with 97% capacitance retention after 10 000 cycles. |
topic |
Phenolic resin spheres Thermal stability Sulfur-doped Hierarchical porous carbon spheres Supercapacitors |
url |
http://www.sciencedirect.com/science/article/pii/S221137971933565X |
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