Evaluation of the physi- and chemisorption of hydrogen in alkali (Na, Li) doped fullerenes

Ward, Patrick A.; Teprovich, Jr., Jospeph A.; Compton, Robert N.; Schwartz, Viviane; Veith, Gabriel M.; Zidan, Ragiay

doi:10.1016/j.ijhydene.2014.12.033

Title: Evaluation of the physi- and chemisorption of hydrogen in alkali (Na, Li) doped fullerenes

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Abstract

Here, alkali doped fullerenes synthesized by two different solvent assisted mixing techniques are compared for their hydrogen uptake activity. In this study we investigated the interaction of hydrogen with alkali doped fullerenes via physisorption. In addition, we present the first mass spectrometric evidence for the formation of C₆₀H₆₀ via chemisorption. Hydrogen physisorption isotherms up to 1 atm at temperatures ranging from 77-303 K were measured demonstrating an increase in hydrogen uptake versus pure C₆₀ and increased isosteric heats of adsorption for the lithium doped fullerene Li₁₂C₆₀. However, despite these improvements the low amount of physisorbed hydrogen at 1 atm and 77 K in these materials suggests that fullerenes do not possess enough accessible surface area to effectively store hydrogen due to their close packed crystalline nature.

Authors:

Ward, Patrick A. ^[1]; Teprovich, Jr., Jospeph A. ^[2]; Compton, Robert N. ^[3]; Schwartz, Viviane ^[4]; Veith, Gabriel M. ^[4]; Zidan, Ragiay ^[2]

Univ. of Tennessee, Knoxville, TN (United States); Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Sun Jan 11 00:00:00 EST 2015

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1185649

Alternate Identifier(s):: OSTI ID: 1361092

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: International Journal of Hydrogen Energy

Additional Journal Information:: Journal Volume: 40; Journal Issue: 6; Journal ID: ISSN 0360-3199

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; hydrogen storage; fullerenes; C60H60; physisorption; chemisorption

Citation Formats


                    Ward, Patrick A., Teprovich, Jr., Jospeph A., Compton, Robert N., Schwartz, Viviane, Veith, Gabriel M., and Zidan, Ragiay. Evaluation of the physi- and chemisorption of hydrogen in alkali (Na, Li) doped fullerenes.  United States: N. p., 2015. 
Web.  doi:10.1016/j.ijhydene.2014.12.033.

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                    Ward, Patrick A., Teprovich, Jr., Jospeph A., Compton, Robert N., Schwartz, Viviane, Veith, Gabriel M., & Zidan, Ragiay. Evaluation of the physi- and chemisorption of hydrogen in alkali (Na, Li) doped fullerenes.  United States.  https://doi.org/10.1016/j.ijhydene.2014.12.033

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                    Ward, Patrick A., Teprovich, Jr., Jospeph A., Compton, Robert N., Schwartz, Viviane, Veith, Gabriel M., and Zidan, Ragiay. Sun .  
"Evaluation of the physi- and chemisorption of hydrogen in alkali (Na, Li) doped fullerenes".  United States.  https://doi.org/10.1016/j.ijhydene.2014.12.033.  https://www.osti.gov/servlets/purl/1185649.

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@article{osti_1185649,

  title        = {Evaluation of the physi- and chemisorption of hydrogen in alkali (Na, Li) doped fullerenes},

  author       = {Ward, Patrick A. and Teprovich, Jr., Jospeph A. and Compton, Robert N. and Schwartz, Viviane and Veith, Gabriel M. and Zidan, Ragiay},

  abstractNote = {Here, alkali doped fullerenes synthesized by two different solvent assisted mixing techniques are compared for their hydrogen uptake activity. In this study we investigated the interaction of hydrogen with alkali doped fullerenes via physisorption. In addition, we present the first mass spectrometric evidence for the formation of C60H60 via chemisorption. Hydrogen physisorption isotherms up to 1 atm at temperatures ranging from 77-303 K were measured demonstrating an increase in hydrogen uptake versus pure C60 and increased isosteric heats of adsorption for the lithium doped fullerene Li12C60. However, despite these improvements the low amount of physisorbed hydrogen at 1 atm and 77 K in these materials suggests that fullerenes do not possess enough accessible surface area to effectively store hydrogen due to their close packed crystalline nature.},

  doi          = {10.1016/j.ijhydene.2014.12.033},

  journal      = {International Journal of Hydrogen Energy},

  number       = 6,

  volume       = 40,

  place        = {United States},

  year         = {Sun Jan 11 00:00:00 EST 2015},

  month        = {Sun Jan 11 00:00:00 EST 2015}

}

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