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Title: Solvent-free production of carbon materials with developed pore structure from biomass for high-performance supercapacitors

Abstract

The study aimed at preparing porous carbon materials, with superhydrophilic characteristics and developed micro/mesoporous structure (CSB-800), from corn stover by a solvent-free method including pre-carbonization, ball milling, and activation. The effect of pre-carbonization, ball milling on the detailed structural composition and properties especially the hydrophilicity and porous structures were studied, and the potential application of CSB-800 as electrode in supercapacitors was also investigated. The results revealed that pre-carbonization increased the accessibility of raw materials as well as the efficiency of the ball milling with KOH, leading to small carbon particles with good dispersion behavior. Ball milling promoted the porosity, surface energy, hydrophilicity, crystallinity, and graphitization of the carbon materials. CSB-800 exhibited a high specific surface area of 2440.6 m2/g with developed micro and porous structures. The heteroatom nitrogen formed nitrogen-containing groups of NQ and NX, which provided faradaic pseudocapacitance when CSB-800 was used as an electrode material, and this material presented a specific capacitance of 398 F/g at 0.5 A/g in 1 M H2SO4 electrolyte in a three-electrode system, while the value was 243 F/g in a two-electrode system, and the energy density reached 5.01 Wh/kg at a power density of 100 W/kg.

Authors:
ORCiD logo [1];  [2];  [3];  [4]; ORCiD logo [5]
+ Show Author Affiliations
  1. Qingdao Univ. of Science and Technology (China). State Key Lab. Base of Eco-Chemical Engineering, College of Chemical Engineering; Northeast Forestry Univ. (China)
  2. Qingdao Univ. of Science and Technology (China). State Key Lab. Base of Eco-Chemical Engineering, College of Chemical Engineering; Northeast Forestry Univ. (China) ; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Joint Institute for Biological Science
  3. Northeast Forestry Univ. (China)
  4. Qingdao Univ. of Science and Technology (China). State Key Lab. Base of Eco-Chemical Engineering, College of Chemical Engineering
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Joint Institute for Biological Science
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1630496
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Industrial Crops and Products
Additional Journal Information:
Journal Volume: 150; Journal Issue: C; Journal ID: ISSN 0926-6690
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; Superhydrophilic; Solvent-free; Ball milling; Corn stover; Supercapacitors

Citation Formats

Huang, Lang, Wu, Qiong, Liu, Shouxin, Yu, Shitao, and Ragauskas, Arthur J. Solvent-free production of carbon materials with developed pore structure from biomass for high-performance supercapacitors. United States: N. p., 2020. Web. doi:10.1016/j.indcrop.2020.112384.
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Huang, Lang, Wu, Qiong, Liu, Shouxin, Yu, Shitao, & Ragauskas, Arthur J. Solvent-free production of carbon materials with developed pore structure from biomass for high-performance supercapacitors. United States. https://doi.org/10.1016/j.indcrop.2020.112384
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Huang, Lang, Wu, Qiong, Liu, Shouxin, Yu, Shitao, and Ragauskas, Arthur J. Sat . "Solvent-free production of carbon materials with developed pore structure from biomass for high-performance supercapacitors". United States. https://doi.org/10.1016/j.indcrop.2020.112384. https://www.osti.gov/servlets/purl/1630496.
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@article{osti_1630496,
title = {Solvent-free production of carbon materials with developed pore structure from biomass for high-performance supercapacitors},
author = {Huang, Lang and Wu, Qiong and Liu, Shouxin and Yu, Shitao and Ragauskas, Arthur J.},
abstractNote = {The study aimed at preparing porous carbon materials, with superhydrophilic characteristics and developed micro/mesoporous structure (CSB-800), from corn stover by a solvent-free method including pre-carbonization, ball milling, and activation. The effect of pre-carbonization, ball milling on the detailed structural composition and properties especially the hydrophilicity and porous structures were studied, and the potential application of CSB-800 as electrode in supercapacitors was also investigated. The results revealed that pre-carbonization increased the accessibility of raw materials as well as the efficiency of the ball milling with KOH, leading to small carbon particles with good dispersion behavior. Ball milling promoted the porosity, surface energy, hydrophilicity, crystallinity, and graphitization of the carbon materials. CSB-800 exhibited a high specific surface area of 2440.6 m2/g with developed micro and porous structures. The heteroatom nitrogen formed nitrogen-containing groups of NQ and NX, which provided faradaic pseudocapacitance when CSB-800 was used as an electrode material, and this material presented a specific capacitance of 398 F/g at 0.5 A/g in 1 M H2SO4 electrolyte in a three-electrode system, while the value was 243 F/g in a two-electrode system, and the energy density reached 5.01 Wh/kg at a power density of 100 W/kg.},
doi = {10.1016/j.indcrop.2020.112384},
journal = {Industrial Crops and Products},
number = C,
volume = 150,
place = {United States},
year = {Sat Apr 11 00:00:00 EDT 2020},
month = {Sat Apr 11 00:00:00 EDT 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1016/j.indcrop.2020.112384
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