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@article{Oates:2022:10.1149/ma2022-01351481mtgabs,
author = {Oates, RP and Murawski, J and Hor, C and Shen, X and Weber, DJ and Oezaslan, M and Shaffer, MSP and Stephens, IEL},
doi = {10.1149/ma2022-01351481mtgabs},
journal = {ECS Meeting Abstracts},
pages = {1481--1481},
title = {How to Impede Hydrogen Evolution on Carbon Based Materials?},
url = {http://dx.doi.org/10.1149/ma2022-01351481mtgabs},
volume = {MA2022-01},
year = {2022}
}

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TY  - JOUR
AB  - <jats:p>  Hydrogen is a highly attractive zero-emission energy sector. However, in many electrochemical systems, such as carbon dioxide reduction, batteries and supercapacitors hydrogen evolution reaction (HER) is an undesired competing reaction. It is therefore important to tailor these electrochemical systems in order to minimise hydrogen production. Carbon black materials are often added to the catalyst layers as they are low cost, abundant, inert, and have a high conductivity and surface area. This work has investigated HER activities for seven different commercial carbon materials to identify the required structural properties of carbon for minimizing the hydrogen evolution reaction.</jats:p>               <jats:p>Rotating disk electrode, X-ray diffraction, and nitrogen adsorption/ desorption were used to determine the electrochemical and physical characteristics of the carbon materials. An on-chip electrochemical mass spectrometer was used to further probe the gaseous products being produced at the electrode <jats:italic>insitu; </jats:italic>we established that the exact onset of the HER at -0.4 V vs RHE, as shown in Figure 1. Furthermore, we have correlated our electrochemical experiments to earlier characterization data on the same carbon materials, including: X-ray photoelectron spectroscopy, elemental analysis (e.g. Fe, H, S, C) using neutron activation analysis.<jats:sup>1</jats:sup>  Our results indicate that the most graphitic carbons with low amount of metal impurities are the best for inhibiting H<jats:sub>2 </jats:sub>evolution.</jats:p>               <jats:p>                   <jats:list list-type="roman-lower">                     <jats:list-item>                        <jats:p>V oli, S. Yang, Z Révay, I E L Stephens & I Chorkendorff, <jats:italic>Electrochim</jats:italic>                           <jats:italic>Acta, &l
AU  - Oates,RP
AU  - Murawski,J
AU  - Hor,C
AU  - Shen,X
AU  - Weber,DJ
AU  - Oezaslan,M
AU  - Shaffer,MSP
AU  - Stephens,IEL
DO  - 10.1149/ma2022-01351481mtgabs
EP  - 1481
PY  - 2022///
SP  - 1481
TI  - How to Impede Hydrogen Evolution on Carbon Based Materials?
T2  - ECS Meeting Abstracts
UR  - http://dx.doi.org/10.1149/ma2022-01351481mtgabs
VL  - MA2022-01
ER  -

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Prof. Ifan E. L. Stephens

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