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Capacitance of Nanoporous Carbon-Based Supercapacitors Is a Trade-Off between the Concentration and the Separability of the Ions

Overview of attention for article published in The Journal of Physical Chemistry Letters, September 2016
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About this Attention Score

  • In the top 25% of all research outputs scored by Altmetric
  • Good Attention Score compared to outputs of the same age (71st percentile)
  • High Attention Score compared to outputs of the same age and source (86th percentile)

Mentioned by

twitter
8 tweeters
facebook
1 Facebook page

Citations

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26 Dimensions

Readers on

mendeley
63 Mendeley
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Title
Capacitance of Nanoporous Carbon-Based Supercapacitors Is a Trade-Off between the Concentration and the Separability of the Ions
Published in
The Journal of Physical Chemistry Letters, September 2016
DOI 10.1021/acs.jpclett.6b01787
Pubmed ID
Authors

Ryan Burt, Konrad Breitsprecher, Barbara Daffos, Pierre-Louis Taberna, Patrice Simon, Greg Birkett, X. S. Zhao, Christian Holm, Mathieu Salanne

Abstract

Nanoporous carbon-based supercapacitors store electricity through adsorption of ions from the electrolyte at the surface of the electrodes. Room temperature ionic liquids, which show the largest ion concentrations among organic liquid electrolytes, should in principle yield larger capacitances. Here we show by using electrochemical measurements that the capacitance is not significantly affected when switching from a pure ionic liquid to a conventional organic electrolyte using the same ionic species. By performing additional molecular dynamics simulations, we interpret this result as an increasing difficulty of separating ions of opposite charges when they are more concentrated, i.e. in the absence of a solvent which screens the Coulombic interactions. The charging mechanism consistently changes with ion concentration, switching from counter-ion adsorption in the diluted organic electrolyte to ion exchange in the pure ionic liquid. Contrarily to the capacitance, in-pore diffusion coefficients largely depend on the composition, with a noticeable slowing of the dynamics in the pure ionic liquid.

Twitter Demographics

The data shown below were collected from the profiles of 8 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 63 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 1 2%
Czechia 1 2%
Unknown 61 97%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 19 30%
Researcher 15 24%
Student > Master 10 16%
Unspecified 7 11%
Student > Bachelor 3 5%
Other 9 14%
Readers by discipline Count As %
Chemistry 21 33%
Materials Science 12 19%
Unspecified 10 16%
Physics and Astronomy 6 10%
Engineering 4 6%
Other 10 16%

Attention Score in Context

This research output has an Altmetric Attention Score of 5. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 29 June 2017.
All research outputs
#2,627,023
of 11,410,328 outputs
Outputs from The Journal of Physical Chemistry Letters
#425
of 3,434 outputs
Outputs of similar age
#72,536
of 257,390 outputs
Outputs of similar age from The Journal of Physical Chemistry Letters
#22
of 168 outputs
Altmetric has tracked 11,410,328 research outputs across all sources so far. Compared to these this one has done well and is in the 76th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,434 research outputs from this source. They receive a mean Attention Score of 3.4. This one has done well, scoring higher than 87% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 257,390 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 71% of its contemporaries.
We're also able to compare this research output to 168 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 86% of its contemporaries.