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

IF 5.5 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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金属添加剂对电池-电解槽组合系统性能催化作用的评价。

通过对铅酸电池进行改造，实现了一种低成本的绿色制氢方法，使20个电池串的氢气流速达到5.3 L min-1。采用循环伏安法研究了不同金属添加剂对析氢反应的电化学行为和催化作用。对镍、钴、锑、锰和铁进行了研究，当镍含量为66 ppm时，改性铅酸电池的产氢率提高了75%。实验设计（DOE）采用简单质心设计模型分析镍、钴和锑的组合加性效应，以评估其对HER的影响。当Ni:Co:Sb以66:17:17 ppm的比例组合时，HER的端电压位移最大，从-1.65 V变为-1.50 V；然而，与66 PPM的镍相比，当添加到一个完整的电池时，没有观察到氢气产量的增加。气相色谱法使用导热检测器和硫化学发光检测器来测量从串联连接的20个电池电解槽中获得的氢的纯度。从电池电解槽中获得纯度为99%的氢气，硫化氢杂质低于检测限（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.

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