Confinement-Controlled Water Engenders Unusually High Electrochemical Capacitance

Svetlana Melnik; Alexander Ryzhov; Alexei Kiselev; Alexandra Radenovic; Tanja Weil; Keith J. Stevenson; Vasily G. Artemov

doi:10.1021/acs.jpclett.3c01498

Confinement-Controlled Water Engenders Unusually High Electrochemical Capacitance

Svetlana Melnik, Alexander Ryzhov, Alexei Kiselev, Alexandra Radenovic, Tanja Weil, Keith J. Stevenson, Vasily G. Artemov

Electric Vehicle Technologies

Research output: Contribution to journal › Article › peer-review

Abstract

The electrodynamics of nanoconfined water have been shown to change dramatically compared to bulk water, opening room for safe electrochemical systems. We demonstrate a nanofluidic “water-only” battery that exploits anomalously high electrolytic properties of pure water at firm confinement. The device consists of a membrane electrode assembly of carbon-based nanomaterials, forming continuously interconnected water-filled nanochannels between the separator and electrodes. The efficiency of the cell in the 1–100 nm pore size range shows a maximum energy density at 3 nm, challenging the region of the current metal-ion batteries. Our results establish the electrodynamic fundamentals of nanoconfined water and pave the way for low-cost and inherently safe energy storage solutions that are much needed in the renewable energy sector.

Original language	English
Pages (from-to)	6572-6576
Number of pages	4
Journal	Journal of Physical Chemistry Letters
Volume	14
Issue number	29
DOIs	https://doi.org/10.1021/acs.jpclett.3c01498
Publication status	Published - 17 Jul 2023

Research Field

Battery Materials Development and Characterisation

Keywords

energy storage
nanoconfined media
sutainablility

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acs.jpclett.3c01498

Cite this

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title = "Confinement-Controlled Water Engenders Unusually High Electrochemical Capacitance",

abstract = "The electrodynamics of nanoconfined water have been shown to change dramatically compared to bulk water, opening room for safe electrochemical systems. We demonstrate a nanofluidic “water-only” battery that exploits anomalously high electrolytic properties of pure water at firm confinement. The device consists of a membrane electrode assembly of carbon-based nanomaterials, forming continuously interconnected water-filled nanochannels between the separator and electrodes. The efficiency of the cell in the 1–100 nm pore size range shows a maximum energy density at 3 nm, challenging the region of the current metal-ion batteries. Our results establish the electrodynamic fundamentals of nanoconfined water and pave the way for low-cost and inherently safe energy storage solutions that are much needed in the renewable energy sector.",

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author = "Svetlana Melnik and Alexander Ryzhov and Alexei Kiselev and Alexandra Radenovic and Tanja Weil and Stevenson, {Keith J.} and Artemov, {Vasily G.}",

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doi = "10.1021/acs.jpclett.3c01498",

language = "English",

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T1 - Confinement-Controlled Water Engenders Unusually High Electrochemical Capacitance

AU - Melnik, Svetlana

AU - Ryzhov, Alexander

AU - Kiselev, Alexei

AU - Radenovic, Alexandra

AU - Weil, Tanja

AU - Stevenson, Keith J.

AU - Artemov, Vasily G.

PY - 2023/7/17

Y1 - 2023/7/17

N2 - The electrodynamics of nanoconfined water have been shown to change dramatically compared to bulk water, opening room for safe electrochemical systems. We demonstrate a nanofluidic “water-only” battery that exploits anomalously high electrolytic properties of pure water at firm confinement. The device consists of a membrane electrode assembly of carbon-based nanomaterials, forming continuously interconnected water-filled nanochannels between the separator and electrodes. The efficiency of the cell in the 1–100 nm pore size range shows a maximum energy density at 3 nm, challenging the region of the current metal-ion batteries. Our results establish the electrodynamic fundamentals of nanoconfined water and pave the way for low-cost and inherently safe energy storage solutions that are much needed in the renewable energy sector.

AB - The electrodynamics of nanoconfined water have been shown to change dramatically compared to bulk water, opening room for safe electrochemical systems. We demonstrate a nanofluidic “water-only” battery that exploits anomalously high electrolytic properties of pure water at firm confinement. The device consists of a membrane electrode assembly of carbon-based nanomaterials, forming continuously interconnected water-filled nanochannels between the separator and electrodes. The efficiency of the cell in the 1–100 nm pore size range shows a maximum energy density at 3 nm, challenging the region of the current metal-ion batteries. Our results establish the electrodynamic fundamentals of nanoconfined water and pave the way for low-cost and inherently safe energy storage solutions that are much needed in the renewable energy sector.

KW - energy storage

KW - nanoconfined media

KW - sutainablility

U2 - 10.1021/acs.jpclett.3c01498

DO - 10.1021/acs.jpclett.3c01498

M3 - Article

SN - 1948-7185

VL - 14

SP - 6572

EP - 6576

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 29

ER -

Confinement-Controlled Water Engenders Unusually High Electrochemical Capacitance

Abstract

Research Field

Keywords

UN SDGs

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