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Title: Influences from solvents on charge storage in titanium carbide MXenes

We report that pseudocapacitive energy storage in supercapacitor electrodes differs significantly from the electrical double-layer mechanism of porous carbon materials, which requires a change from conventional thinking when choosing appropriate electrolytes. Here we show how simply changing the solvent of an electrolyte system can drastically influence the pseudocapacitive charge storage of the two-dimensional titanium carbide, Ti 3C 2 (a representative member of the MXene family). Measurements of the charge stored by Ti 3C 2 in lithium-containing electrolytes with nitrile-, carbonate- and sulfoxide-based solvents show that the use of a carbonate solvent doubles the charge stored by Ti 3C 2 when compared with the other solvent systems. We find that the chemical nature of the electrolyte solvent has a profound effect on the arrangement of molecules/ions in Ti 3C 2, which correlates directly to the total charge being stored. Finally, having nearly completely desolvated lithium ions in Ti 3C 2 for the carbonate-based electrolyte leads to high volumetric capacitance at high charge–discharge rates, demonstrating the importance of considering all aspects of an electrochemical system during development.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [4] ; ORCiD logo [5] ;  [1] ;  [1] ;  [1] ;  [6] ; ORCiD logo [5] ; ORCiD logo [7] ; ORCiD logo [1]
  1. Drexel Univ., Philadelphia, PA (United States)
  2. Université Paul Sabatier, Toulouse (France); Sichuan University, Chengdu (China)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  4. Murata Manufacturing Co., Ltd, Nagaokakyo-shi, Kyoto (Japan)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
  7. Université Paul Sabatier, Toulouse (France); Réseau sur le Stockage Electrochimique de l’Energie (RS2E), Amiens (France)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Nature Energy
Additional Journal Information:
Journal Volume: 4; Journal Issue: 3; Journal ID: ISSN 2058-7546
Publisher:
Nature Publishing Group
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE
OSTI Identifier:
1502529

Wang, Xuehang, Mathis, Tyler S., Li, Ke, Lin, Zifeng, Vlcek, Lukas, Torita, Takeshi, Osti, Naresh C., Hatter, Christine, Urbankowski, Patrick, Sarycheva, Asia, Tyagi, Madhusudan, Mamontov, Eugene, Simon, Patrice, and Gogotsi, Yury. Influences from solvents on charge storage in titanium carbide MXenes. United States: N. p., Web. doi:10.1038/s41560-019-0339-9.
Wang, Xuehang, Mathis, Tyler S., Li, Ke, Lin, Zifeng, Vlcek, Lukas, Torita, Takeshi, Osti, Naresh C., Hatter, Christine, Urbankowski, Patrick, Sarycheva, Asia, Tyagi, Madhusudan, Mamontov, Eugene, Simon, Patrice, & Gogotsi, Yury. Influences from solvents on charge storage in titanium carbide MXenes. United States. doi:10.1038/s41560-019-0339-9.
Wang, Xuehang, Mathis, Tyler S., Li, Ke, Lin, Zifeng, Vlcek, Lukas, Torita, Takeshi, Osti, Naresh C., Hatter, Christine, Urbankowski, Patrick, Sarycheva, Asia, Tyagi, Madhusudan, Mamontov, Eugene, Simon, Patrice, and Gogotsi, Yury. 2019. "Influences from solvents on charge storage in titanium carbide MXenes". United States. doi:10.1038/s41560-019-0339-9.
@article{osti_1502529,
title = {Influences from solvents on charge storage in titanium carbide MXenes},
author = {Wang, Xuehang and Mathis, Tyler S. and Li, Ke and Lin, Zifeng and Vlcek, Lukas and Torita, Takeshi and Osti, Naresh C. and Hatter, Christine and Urbankowski, Patrick and Sarycheva, Asia and Tyagi, Madhusudan and Mamontov, Eugene and Simon, Patrice and Gogotsi, Yury},
abstractNote = {We report that pseudocapacitive energy storage in supercapacitor electrodes differs significantly from the electrical double-layer mechanism of porous carbon materials, which requires a change from conventional thinking when choosing appropriate electrolytes. Here we show how simply changing the solvent of an electrolyte system can drastically influence the pseudocapacitive charge storage of the two-dimensional titanium carbide, Ti3C2 (a representative member of the MXene family). Measurements of the charge stored by Ti3C2 in lithium-containing electrolytes with nitrile-, carbonate- and sulfoxide-based solvents show that the use of a carbonate solvent doubles the charge stored by Ti3C2 when compared with the other solvent systems. We find that the chemical nature of the electrolyte solvent has a profound effect on the arrangement of molecules/ions in Ti3C2, which correlates directly to the total charge being stored. Finally, having nearly completely desolvated lithium ions in Ti3C2 for the carbonate-based electrolyte leads to high volumetric capacitance at high charge–discharge rates, demonstrating the importance of considering all aspects of an electrochemical system during development.},
doi = {10.1038/s41560-019-0339-9},
journal = {Nature Energy},
number = 3,
volume = 4,
place = {United States},
year = {2019},
month = {3}
}

Works referenced in this record:

A review of electrode materials for electrochemical supercapacitors
journal, January 2012
  • Wang, Guoping; Zhang, Lei; Zhang, Jiujun
  • Chemical Society Reviews, Vol. 41, Issue 2, p. 797-828
  • DOI: 10.1039/C1CS15060J

Carbon-Based Supercapacitors Produced by Activation of Graphene
journal, May 2011

Electrochemical Characteristics and Impedance Spectroscopy Studies of Carbon-Carbon Supercapacitors
journal, January 2003
  • Taberna, P. L.; Simon, P.; Fauvarque, J. F.
  • Journal of The Electrochemical Society, Vol. 150, Issue 3, p. A292-A300
  • DOI: 10.1149/1.1543948