Capacitance, charge dynamics, and electrolyte-surface interactions in functionalized carbide-derived carbon electrodes

Dyatkin, Boris; Mamontov, Eugene; Cook, Kevin M.; Gogotsi, Yury

doi:10.1016/j.pnsc.2015.11.007

Title: Capacitance, charge dynamics, and electrolyte-surface interactions in functionalized carbide-derived carbon electrodes

Abstract

Our study analyzed the dynamics of ionic liquid electrolyte inside of defunctionalized, hydrogenated, and aminated pores of carbide-derived carbon supercapacitor electrodes. The approach tailors surface functionalities and tunes nanoporous structures to decouple the influence of pore wall composition on capacitance, ionic resistance, and long-term cyclability. Moreover, quasi-elastic neutron scattering probes the self-diffusion properties and electrode-ion interactions of electrolyte molecules confined in functionalized pores. Room-temperature ionic liquid interactions in confined pores are strongest when the hydrogen-containing groups are present on the surface. This property translates into higher capacitance and greater ion transport through pores during electrochemical cycling. Aminated pores, unlike hydrogenated pores, do not favorably interact with ionic liquid ions and, subsequently, are outperformed by defunctionalized surfaces.

Authors:: Dyatkin, Boris; Mamontov, Eugene; Cook, Kevin M.; Gogotsi, Yury

Publication Date:: Tue Dec 01 00:00:00 EST 2015

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1233943

Alternate Identifier(s):: OSTI ID: 1265882

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Published Article

Journal Name:: Progress in Natural Science

Additional Journal Information:: Journal Name: Progress in Natural Science Journal Volume: 25 Journal Issue: 6; Journal ID: ISSN 1002-0071

Publisher:: Elsevier

Country of Publication:: China

Language:: English

Subject:: 36 MATERIALS SCIENCE; supercapacitor; carbide-derived carbon; neutron scattering; energy storage; porous materials; surface chemistry

Citation Formats


                    Dyatkin, Boris, Mamontov, Eugene, Cook, Kevin M., and Gogotsi, Yury. Capacitance, charge dynamics, and electrolyte-surface interactions in functionalized carbide-derived carbon electrodes.  China: N. p., 2015. 
Web.  doi:10.1016/j.pnsc.2015.11.007.

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                    Dyatkin, Boris, Mamontov, Eugene, Cook, Kevin M., & Gogotsi, Yury. Capacitance, charge dynamics, and electrolyte-surface interactions in functionalized carbide-derived carbon electrodes.  China.  https://doi.org/10.1016/j.pnsc.2015.11.007

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                    Dyatkin, Boris, Mamontov, Eugene, Cook, Kevin M., and Gogotsi, Yury. Tue .  
"Capacitance, charge dynamics, and electrolyte-surface interactions in functionalized carbide-derived carbon electrodes".  China.  https://doi.org/10.1016/j.pnsc.2015.11.007.

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@article{osti_1233943,

  title        = {Capacitance, charge dynamics, and electrolyte-surface interactions in functionalized carbide-derived carbon electrodes},

  author       = {Dyatkin, Boris and Mamontov, Eugene and Cook, Kevin M. and Gogotsi, Yury},

  abstractNote = {Our study analyzed the dynamics of ionic liquid electrolyte inside of defunctionalized, hydrogenated, and aminated pores of carbide-derived carbon supercapacitor electrodes. The approach tailors surface functionalities and tunes nanoporous structures to decouple the influence of pore wall composition on capacitance, ionic resistance, and long-term cyclability. Moreover, quasi-elastic neutron scattering probes the self-diffusion properties and electrode-ion interactions of electrolyte molecules confined in functionalized pores. Room-temperature ionic liquid interactions in confined pores are strongest when the hydrogen-containing groups are present on the surface. This property translates into higher capacitance and greater ion transport through pores during electrochemical cycling. Aminated pores, unlike hydrogenated pores, do not favorably interact with ionic liquid ions and, subsequently, are outperformed by defunctionalized surfaces.},

  doi          = {10.1016/j.pnsc.2015.11.007},

  journal      = {Progress in Natural Science},

  number       = 6,

  volume       = 25,

  place        = {China},

  year         = {Tue Dec 01 00:00:00 EST 2015},

  month        = {Tue Dec 01 00:00:00 EST 2015}

}

Copy to clipboard

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Title: Capacitance, charge dynamics, and electrolyte-surface interactions in functionalized carbide-derived carbon electrodes

Abstract

Citation Formats

Computational chemistry for graphene-based energy applications: progress and challenges journal, January 2015

Ionic liquids: perspectives for organic and catalytic reactions journal, May 2002

Influence of the structure of carbon onions on their electrochemical performance in supercapacitor electrodes journal, August 2012

Charging Dynamics and Optimization of Nanoporous Supercapacitors journal, June 2013

Structural evolution of carbide-derived carbons upon vacuum annealing journal, November 2012

Thermal stability of low temperature ionic liquids revisited journal, March 2004

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Enhanced capacitance of nitrogen-doped hierarchically porous carbide-derived carbon in matched ionic liquids journal, January 2015

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Experimental evidence of logarithmic relaxation in single-particle dynamics of hydrated protein molecules journal, January 2010

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Computational chemistry for graphene-based energy applications: progress and challenges
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Ionic liquids: perspectives for organic and catalytic reactions
journal, May 2002

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journal, August 2012

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journal, November 2012

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journal, November 2008

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journal, April 2012

Effect of accelerated ageing on the performance of high voltage carbon/carbon electrochemical capacitors in salt aqueous electrolyte
journal, June 2014

Solvent effect on the ion adsorption from ionic liquid electrolyte into sub-nanometer carbon pores
journal, November 2009

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journal, January 2010

Covalent Incorporation of Aminated Nanodiamond into an Epoxy Polymer Network
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Functionalization of Porous Carbon Materials with Designed Pore Architecture
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journal, June 2008

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XPS investigation of the reaction of carbon with NO, O2, N2 and H2O plasmas
journal, January 2007

Temperature Dependence of Logarithmic-like Relaxational Dynamics of Hydrated tRNA
journal, March 2013

Effect of pore size and surface area of carbide derived carbons on specific capacitance
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