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Title: γ-Valerolactone-Extracted Lignin to Porous Carbon Materials

Abstract

Synthesis of multiphase materials from lignin, a biorefinery coproduct, offers limited success due to the inherent difficulty in controlling dispersion of these renewable hyperbranched macromolecules in the product or its intermediates. Effective use of the chemically reactive functionalities in lignin, however, enables tuning morphologies of the materials. Here, we bind a lignin oligomer with a rubbery macromolecule followed by thermal crosslinking to form a carbon precursor with phase contrasted morphology at submicron scale. The solvent-free mixing is conducted in a high-shear melt-mixer. With this, the carbon precursor is further modified with potassium hydroxide for a single-step carbonization to yield activated carbon with tunable pore structure. A typical precursor with 90% lignin yields porous carbon with 2120 m 2/g surface area and a supercapacitor with 215 F/g capacitance. The results show a simple route towards manufacturing carbon-based energy-storage materials, eliminating the need for conventional template-synthesis.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1470859
Report Number(s):
ORNL/TM-2018/904
CRADA/NFE-16-06138
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Ho, Hoi Chun, Nguyen, Ngoc A., Meek, Kelly M., Naskar, Amit K., Alonso, David M., Hakim, Sikander H., and Fornero, Jeffrey J. γ-Valerolactone-Extracted Lignin to Porous Carbon Materials. United States: N. p., 2018. Web. doi:10.2172/1470859.
Ho, Hoi Chun, Nguyen, Ngoc A., Meek, Kelly M., Naskar, Amit K., Alonso, David M., Hakim, Sikander H., & Fornero, Jeffrey J. γ-Valerolactone-Extracted Lignin to Porous Carbon Materials. United States. doi:10.2172/1470859.
Ho, Hoi Chun, Nguyen, Ngoc A., Meek, Kelly M., Naskar, Amit K., Alonso, David M., Hakim, Sikander H., and Fornero, Jeffrey J. Tue . "γ-Valerolactone-Extracted Lignin to Porous Carbon Materials". United States. doi:10.2172/1470859. https://www.osti.gov/servlets/purl/1470859.
@article{osti_1470859,
title = {γ-Valerolactone-Extracted Lignin to Porous Carbon Materials},
author = {Ho, Hoi Chun and Nguyen, Ngoc A. and Meek, Kelly M. and Naskar, Amit K. and Alonso, David M. and Hakim, Sikander H. and Fornero, Jeffrey J.},
abstractNote = {Synthesis of multiphase materials from lignin, a biorefinery coproduct, offers limited success due to the inherent difficulty in controlling dispersion of these renewable hyperbranched macromolecules in the product or its intermediates. Effective use of the chemically reactive functionalities in lignin, however, enables tuning morphologies of the materials. Here, we bind a lignin oligomer with a rubbery macromolecule followed by thermal crosslinking to form a carbon precursor with phase contrasted morphology at submicron scale. The solvent-free mixing is conducted in a high-shear melt-mixer. With this, the carbon precursor is further modified with potassium hydroxide for a single-step carbonization to yield activated carbon with tunable pore structure. A typical precursor with 90% lignin yields porous carbon with 2120 m2/g surface area and a supercapacitor with 215 F/g capacitance. The results show a simple route towards manufacturing carbon-based energy-storage materials, eliminating the need for conventional template-synthesis.},
doi = {10.2172/1470859},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

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