Evaluation of the Catalytic Effect of Metal Additives on the Performance of a Combined Battery and Electrolyzer System.

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2025-01-08 eCollection Date: 2025-01-27 DOI:10.1021/acsaem.4c02648

Elizabeth Ashton, Matthew Brenton, Jonathan G Wilson, John P Barton, Richard Wilson, Danielle Strickland, Simon A Kondrat, Nicolas Clement, John Wertz, Jibo Zhang

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Abstract

A low-cost method of green hydrogen production via the modification of a lead acid battery has been achieved, resulting in a hydrogen flow rate of 5.3 L min^-1 from a 20-cell string. The electrochemical behavior and catalytic effect of various metal additives on the hydrogen evolution reaction (HER) was evaluated using cyclic voltammetry. Nickel, cobalt, antimony, manganese, and iron were investigated, with 66 ppm nickel achieving a 75% increase in hydrogen produced from a modified lead acid battery. Design of Experiments (DOE) employing a simple centroid design model to analyze the combined additive effects of nickel, cobalt, and antimony was performed to evaluate the effect on the HER. A combination of Ni:Co:Sb in the ratio 66:17:17 ppm achieved the greatest end voltage shift of the HER from -1.65 to -1.50 V; however, no increase in hydrogen yield was observed in comparison to 66 ppm of nickel when added to a full-scale cell. Gas chromatography using a thermal conductive detector and a sulfur chemiluminescence detector were used to measure the purity of hydrogen obtained from a string of 20 battery electrolyzer cells connected in series. 99% purity hydrogen gas was obtained from the battery electrolyzer cells, with H₂S impurities below the limit of detection (0.221 ppm).

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.