DOI > 10.5291/ILL-DATA.1-04-214

This proposal is publicly available since 09/03/2026

Title

Ion Adsorption on Planar Graphene Electrochemical Double Layer Capacitor Electrodes

Abstract

All across our devices - phone to regenerative braking, electrical energy storage is becoming more important, particularly as part of the exploitation of renewable resources. Electrochemical double layer capacitors (EDLCs) are a high power energy storage device that operate by charge separation across the double layer at the electrode/electrolyte interface. Hence, we need to further our understanding of the structure of the electrolyte ions at the electrode surface to improve these devices. Graphene is one of a number of carbons used for EDLC electrodes. This proposal aims to investigate the interactions and ‘absorption’ of ions on graphene substrates utilising the unique capability of neutron reflection to study surface structures of organic molecules on carbon surfaces in-situ and resolve cations and anions using h-/d-contrast. The structures adopted with and without applied potential will be studied.

Experimental Report

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Data Citation

The recommended format for citing this dataset in a research publication is in the following format:

CLARKE Stuart M.; GUTFREUND Philipp; SHARIFI Najib and SMITH Holly. (2021). Ion Adsorption on Planar Graphene Electrochemical Double Layer Capacitor Electrodes. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-04-214

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Metadata

Experiment Parameters

  • Environment temperature

    rtp

Sample Parameters

  • Formula

    • Graphene coated silicon wafer
    • hexadecenoate anion C16 TAB cation in Acetonitrile