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Permselective ion electrosorption of subnanometer pores at high molar strength enables capacitive deionization of saline water

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Permselective ion electrosorption of subnanometer pores at high molar strength enables capacitive deionization of saline water. / Bi, Sheng; Zhang, Yuan; Cervini, Luca et al.
In: Sustainable Energy and Fuels, Vol. 4, No. 3, 01.03.2020, p. 1285-1295.

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Bi S, Zhang Y, Cervini L, Mo T, Griffin JM, Presser V et al. Permselective ion electrosorption of subnanometer pores at high molar strength enables capacitive deionization of saline water. Sustainable Energy and Fuels. 2020 Mar 1;4(3):1285-1295. Epub 2019 Dec 16. doi: 10.1039/c9se00996e

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Bi, Sheng ; Zhang, Yuan ; Cervini, Luca et al. / Permselective ion electrosorption of subnanometer pores at high molar strength enables capacitive deionization of saline water. In: Sustainable Energy and Fuels. 2020 ; Vol. 4, No. 3. pp. 1285-1295.

Bibtex

@article{25c9b7daf1b440068763ceb33bdb7a52,
title = "Permselective ion electrosorption of subnanometer pores at high molar strength enables capacitive deionization of saline water",
abstract = "Capacitive deionization with porous carbon electrodes is an energy-efficient water treatment technique limited to the remediation of only brackish water due to the severe efficiency drop at high molar strength. Combining experiment and simulation, our work demonstrates the ability of subnanometer pores for permselective ion electrosorption, which enables capacitive deionization for saline media with high concentrations. Molecular dynamics simulations reveal the origin of permselective ion electrosorption in subnanometer pores at high molar strength. Within the subnanometer range, carbon pores with smaller size become more ionophobic and then express a higher ability of permselective ion electrosorption. This can be understood by the effects of the pore size on the microstructure of in-pore water and ions and the nanoconfinement effects on the ion hydration. These findings provide a new avenue for capacitive deionization of saline water (seawater-like ionic strength) to enable the application of highly concentrated saline media by direct use of porous carbons.",
keywords = "SEAWATER DESALINATION, CARBON ELECTRODE, CHARGING DYNAMICS, ENERGY-STORAGE, FUTURE, SIZE, NMR, INTERCALATION, TECHNOLOGY, COMPOSITE",
author = "Sheng Bi and Yuan Zhang and Luca Cervini and Tangming Mo and Griffin, {John M.} and Volker Presser and Guang Feng",
year = "2020",
month = mar,
day = "1",
doi = "10.1039/c9se00996e",
language = "English",
volume = "4",
pages = "1285--1295",
journal = "Sustainable Energy and Fuels",
issn = "2398-4902",
publisher = "ROYAL SOC CHEMISTRY",
number = "3",

}

RIS

TY - JOUR

T1 - Permselective ion electrosorption of subnanometer pores at high molar strength enables capacitive deionization of saline water

AU - Bi, Sheng

AU - Zhang, Yuan

AU - Cervini, Luca

AU - Mo, Tangming

AU - Griffin, John M.

AU - Presser, Volker

AU - Feng, Guang

PY - 2020/3/1

Y1 - 2020/3/1

N2 - Capacitive deionization with porous carbon electrodes is an energy-efficient water treatment technique limited to the remediation of only brackish water due to the severe efficiency drop at high molar strength. Combining experiment and simulation, our work demonstrates the ability of subnanometer pores for permselective ion electrosorption, which enables capacitive deionization for saline media with high concentrations. Molecular dynamics simulations reveal the origin of permselective ion electrosorption in subnanometer pores at high molar strength. Within the subnanometer range, carbon pores with smaller size become more ionophobic and then express a higher ability of permselective ion electrosorption. This can be understood by the effects of the pore size on the microstructure of in-pore water and ions and the nanoconfinement effects on the ion hydration. These findings provide a new avenue for capacitive deionization of saline water (seawater-like ionic strength) to enable the application of highly concentrated saline media by direct use of porous carbons.

AB - Capacitive deionization with porous carbon electrodes is an energy-efficient water treatment technique limited to the remediation of only brackish water due to the severe efficiency drop at high molar strength. Combining experiment and simulation, our work demonstrates the ability of subnanometer pores for permselective ion electrosorption, which enables capacitive deionization for saline media with high concentrations. Molecular dynamics simulations reveal the origin of permselective ion electrosorption in subnanometer pores at high molar strength. Within the subnanometer range, carbon pores with smaller size become more ionophobic and then express a higher ability of permselective ion electrosorption. This can be understood by the effects of the pore size on the microstructure of in-pore water and ions and the nanoconfinement effects on the ion hydration. These findings provide a new avenue for capacitive deionization of saline water (seawater-like ionic strength) to enable the application of highly concentrated saline media by direct use of porous carbons.

KW - SEAWATER DESALINATION

KW - CARBON ELECTRODE

KW - CHARGING DYNAMICS

KW - ENERGY-STORAGE

KW - FUTURE

KW - SIZE

KW - NMR

KW - INTERCALATION

KW - TECHNOLOGY

KW - COMPOSITE

U2 - 10.1039/c9se00996e

DO - 10.1039/c9se00996e

M3 - Journal article

VL - 4

SP - 1285

EP - 1295

JO - Sustainable Energy and Fuels

JF - Sustainable Energy and Fuels

SN - 2398-4902

IS - 3

ER -