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Title: Linking lignin source with structural and electrochemical properties of lignin-derived carbon materials

Valorization of lignin to high-value chemicals and products along with biofuel production is generally acknowledged as a technology platform that could significantly improve the economic viability of biorefinery operations. With a growing demand for electrical energy storage materials, lignin-derived activated carbon (AC) materials have received increasing attention in recent years. However, there is an apparent gap in our understanding of the impact of the lignin precursors (i.e., lignin structure, composition and inter-unit linkages) on the structural and electrochemical properties of the derived ACs. In the present study, lignin-derived ACs were prepared under identical conditions from two different lignin sources: alkaline pretreated poplar and pine. The lignin precursors were characterized using composition analysis, size exclusion chromatography, and 2D HSQC nuclear magnetic resonance (NMR). Distinctive distributions of numerous micro-, meso- and macro-porous channels were observed in the two lignin-derived ACs. Poplar lignin-derived ACs exhibited a larger BET surface area and total mesopore volume than pine lignin-derived AC, which contributed to a larger electrochemical capacitance over a range of scan rates. X-ray photoelectron spectroscopic analysis (XPS) results revealed the presence of oxygen-containing functional groups in all lignin-derived ACs, which participated in redox reactions and thus contributed to an additional pseudo-capacitance. A possible processmore » mechanism was proposed to explain the effects of lignin structure and composition on lignin-derived AC pore structure during thermochemical conversion. As a result, this study provides insight into how the lignin composition and structure affect the derived ACs for energy storage applications.« less
Authors:
 [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [2] ;  [1] ; ORCiD logo [3] ; ORCiD logo [1] ;  [1] ; ORCiD logo [4] ; ORCiD logo [1]
  1. Univ. of Kentucky, Lexington, KY (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States); Univ. of Tennessee Institute of Agriculture, Knoxville, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Published Article
Journal Name:
RSC Advances
Additional Journal Information:
Journal Volume: 8; Journal Issue: 68; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1482742
Alternate Identifier(s):
OSTI ID: 1489097

Li, Wenqi, Zhang, Yan, Das, Lalitendu, Wang, Yikai, Li, Mi, Wanninayake, Namal, Pu, Yunqiao Joseph, Kim, Doo Young, Cheng, Yang -Tse, Ragauskas, Arthur J., and Shi, Jian. Linking lignin source with structural and electrochemical properties of lignin-derived carbon materials. United States: N. p., Web. doi:10.1039/c8ra08539k.
Li, Wenqi, Zhang, Yan, Das, Lalitendu, Wang, Yikai, Li, Mi, Wanninayake, Namal, Pu, Yunqiao Joseph, Kim, Doo Young, Cheng, Yang -Tse, Ragauskas, Arthur J., & Shi, Jian. Linking lignin source with structural and electrochemical properties of lignin-derived carbon materials. United States. doi:10.1039/c8ra08539k.
Li, Wenqi, Zhang, Yan, Das, Lalitendu, Wang, Yikai, Li, Mi, Wanninayake, Namal, Pu, Yunqiao Joseph, Kim, Doo Young, Cheng, Yang -Tse, Ragauskas, Arthur J., and Shi, Jian. 2018. "Linking lignin source with structural and electrochemical properties of lignin-derived carbon materials". United States. doi:10.1039/c8ra08539k.
@article{osti_1482742,
title = {Linking lignin source with structural and electrochemical properties of lignin-derived carbon materials},
author = {Li, Wenqi and Zhang, Yan and Das, Lalitendu and Wang, Yikai and Li, Mi and Wanninayake, Namal and Pu, Yunqiao Joseph and Kim, Doo Young and Cheng, Yang -Tse and Ragauskas, Arthur J. and Shi, Jian},
abstractNote = {Valorization of lignin to high-value chemicals and products along with biofuel production is generally acknowledged as a technology platform that could significantly improve the economic viability of biorefinery operations. With a growing demand for electrical energy storage materials, lignin-derived activated carbon (AC) materials have received increasing attention in recent years. However, there is an apparent gap in our understanding of the impact of the lignin precursors (i.e., lignin structure, composition and inter-unit linkages) on the structural and electrochemical properties of the derived ACs. In the present study, lignin-derived ACs were prepared under identical conditions from two different lignin sources: alkaline pretreated poplar and pine. The lignin precursors were characterized using composition analysis, size exclusion chromatography, and 2D HSQC nuclear magnetic resonance (NMR). Distinctive distributions of numerous micro-, meso- and macro-porous channels were observed in the two lignin-derived ACs. Poplar lignin-derived ACs exhibited a larger BET surface area and total mesopore volume than pine lignin-derived AC, which contributed to a larger electrochemical capacitance over a range of scan rates. X-ray photoelectron spectroscopic analysis (XPS) results revealed the presence of oxygen-containing functional groups in all lignin-derived ACs, which participated in redox reactions and thus contributed to an additional pseudo-capacitance. A possible process mechanism was proposed to explain the effects of lignin structure and composition on lignin-derived AC pore structure during thermochemical conversion. As a result, this study provides insight into how the lignin composition and structure affect the derived ACs for energy storage applications.},
doi = {10.1039/c8ra08539k},
journal = {RSC Advances},
number = 68,
volume = 8,
place = {United States},
year = {2018},
month = {11}
}

Works referenced in this record:

Lignin Valorization: Improving Lignin Processing in the Biorefinery
journal, May 2014
  • Ragauskas, A. J.; Beckham, G. T.; Biddy, M. J.
  • Science, Vol. 344, Issue 6185, p. 1246843-1246843
  • DOI: 10.1126/science.1246843

Hydrolysis of lignocellulosic materials for ethanol production: a review
journal, May 2002