Conversion of soybean waste to sub-micron porous-hollow carbon spheres for supercapacitor via a reagent and template-free route

Shanshan Wang; Wei Sun; Dong Sheng Yang; Fuqian Yang

doi:10.1016/j.mtener.2019.04.015

Conversion of soybean waste to sub-micron porous-hollow carbon spheres for supercapacitor via a reagent and template-free route

Shanshan Wang, Wei Sun, Dong Sheng Yang, Fuqian Yang

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Sub-micron porous-hollow carbon spheres are synthesized from ground soybean waste via a facile and economical hydrothermal carbonization and high-temperature heat-treatment in different media. The sub-micron porous-hollow carbon spheres after the heat treatment with the flow of argon have an average size of 398 ± 10 nm and an average shell thickness of ∼40 nm. The carbon in the porous-hollow spheres is amorphous. The electrochemical analyses of the porous-hollow spheres reveal that the porous-hollow carbon spheres heat-treated with the flow of the mixture of N₂ and H₂O steam have good capacitive properties and high specific capacitances, and the porous-hollow carbon spheres heat-treated in an inert medium (N₂ or Ar)possess relatively low capacitances with good rate capability. The results reported in this work likely provide a new and simple route for preparing functional materials with designed structures.

Original language	English
Pages (from-to)	50-55
Number of pages	6
Journal	Materials Today Energy
Volume	13
DOIs	https://doi.org/10.1016/j.mtener.2019.04.015
State	Published - Sep 2019

Bibliographical note

Funding Information:
This work is supported by the NSF through the grant CMMI-1634540 (FQY)monitored by Dr. Khershed Cooper, the grant CHE-1800316 (DSY)of Division of Chemistry, and the National Natural Science Foundation of China (No. 21805123)(WS).

Funding Information:
This work is supported by the NSF through the grant CMMI-1634540 (FQY) monitored by Dr. Khershed Cooper, the grant CHE-1800316 (DSY) of Division of Chemistry, and the National Natural Science Foundation of China (No. 21805123 ) (WS).

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

Biomass waste
Hollow-porous structure
Template-free

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Materials Science (miscellaneous)
Nuclear Energy and Engineering
Fuel Technology
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.mtener.2019.04.015

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title = "Conversion of soybean waste to sub-micron porous-hollow carbon spheres for supercapacitor via a reagent and template-free route",

abstract = "Sub-micron porous-hollow carbon spheres are synthesized from ground soybean waste via a facile and economical hydrothermal carbonization and high-temperature heat-treatment in different media. The sub-micron porous-hollow carbon spheres after the heat treatment with the flow of argon have an average size of 398 ± 10 nm and an average shell thickness of ∼40 nm. The carbon in the porous-hollow spheres is amorphous. The electrochemical analyses of the porous-hollow spheres reveal that the porous-hollow carbon spheres heat-treated with the flow of the mixture of N2 and H2O steam have good capacitive properties and high specific capacitances, and the porous-hollow carbon spheres heat-treated in an inert medium (N2 or Ar)possess relatively low capacitances with good rate capability. The results reported in this work likely provide a new and simple route for preparing functional materials with designed structures.",

keywords = "Biomass waste, Hollow-porous structure, Template-free",

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AU - Sun, Wei

AU - Yang, Dong Sheng

AU - Yang, Fuqian

N1 - Funding Information: This work is supported by the NSF through the grant CMMI-1634540 (FQY)monitored by Dr. Khershed Cooper, the grant CHE-1800316 (DSY)of Division of Chemistry, and the National Natural Science Foundation of China (No. 21805123)(WS). Funding Information: This work is supported by the NSF through the grant CMMI-1634540 (FQY) monitored by Dr. Khershed Cooper, the grant CHE-1800316 (DSY) of Division of Chemistry, and the National Natural Science Foundation of China (No. 21805123 ) (WS). Publisher Copyright: © 2019 Elsevier Ltd

PY - 2019/9

Y1 - 2019/9

N2 - Sub-micron porous-hollow carbon spheres are synthesized from ground soybean waste via a facile and economical hydrothermal carbonization and high-temperature heat-treatment in different media. The sub-micron porous-hollow carbon spheres after the heat treatment with the flow of argon have an average size of 398 ± 10 nm and an average shell thickness of ∼40 nm. The carbon in the porous-hollow spheres is amorphous. The electrochemical analyses of the porous-hollow spheres reveal that the porous-hollow carbon spheres heat-treated with the flow of the mixture of N2 and H2O steam have good capacitive properties and high specific capacitances, and the porous-hollow carbon spheres heat-treated in an inert medium (N2 or Ar)possess relatively low capacitances with good rate capability. The results reported in this work likely provide a new and simple route for preparing functional materials with designed structures.

AB - Sub-micron porous-hollow carbon spheres are synthesized from ground soybean waste via a facile and economical hydrothermal carbonization and high-temperature heat-treatment in different media. The sub-micron porous-hollow carbon spheres after the heat treatment with the flow of argon have an average size of 398 ± 10 nm and an average shell thickness of ∼40 nm. The carbon in the porous-hollow spheres is amorphous. The electrochemical analyses of the porous-hollow spheres reveal that the porous-hollow carbon spheres heat-treated with the flow of the mixture of N2 and H2O steam have good capacitive properties and high specific capacitances, and the porous-hollow carbon spheres heat-treated in an inert medium (N2 or Ar)possess relatively low capacitances with good rate capability. The results reported in this work likely provide a new and simple route for preparing functional materials with designed structures.

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KW - Hollow-porous structure

KW - Template-free

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Conversion of soybean waste to sub-micron porous-hollow carbon spheres for supercapacitor via a reagent and template-free route

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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