Hydrogen production with reduced energy consumption for use in fuel cells and energy sector

Monatshefte für Chemie / Chemical Monthly Pub Date : 2024-02-26 DOI:10.1007/s00706-023-03159-z

{"title":"Hydrogen production with reduced energy consumption for use in fuel cells and energy sector","authors":"","doi":"10.1007/s00706-023-03159-z","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> The possibility of increasing the hydrogen release rate and reducing energy consumption was analyzed using a system in which the anodic process of metal (aluminum) dissolution occurred on one electrode and the process of H2 release on the other (nickel) electrode. The possibility of generating hydrogen with a current density of ~ 400 mA cm–2 in NaOH solutions with a concentration of 6–8 mol dm–3 at a cell voltage of ~ 0.5 V was confirmed. When the electrodes were short-circuited, hydrogen was generated on nickel when aluminum was dissolved at a rate corresponding to current density ~ 100 mA cm–2. The possibility of simultaneous hydrogen production and electricity generation in the system under consideration was shown. It was found that the maximum net power was generated in 6 mol dm–3 NaOH. The specific power in such a solution can reach a value of 8 mW cm–2 at a cell voltage of about 0.15 V. In this case, the hydrogen release rate corresponded to a current density of 60 mA cm–2. <h3>Graphical abstract</h3> <img alt=\"\" src=\"https://static-content.springer.com/image/MediaObjects/706_2023_3159_Figa_HTML.png\"/> ","PeriodicalId":19011,"journal":{"name":"Monatshefte für Chemie / Chemical Monthly","volume":"3 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Monatshefte für Chemie / Chemical Monthly","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s00706-023-03159-z","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

The possibility of increasing the hydrogen release rate and reducing energy consumption was analyzed using a system in which the anodic process of metal (aluminum) dissolution occurred on one electrode and the process of H₂ release on the other (nickel) electrode. The possibility of generating hydrogen with a current density of ~ 400 mA cm^–2 in NaOH solutions with a concentration of 6–8 mol dm^–3 at a cell voltage of ~ 0.5 V was confirmed. When the electrodes were short-circuited, hydrogen was generated on nickel when aluminum was dissolved at a rate corresponding to current density ~ 100 mA cm^–2. The possibility of simultaneous hydrogen production and electricity generation in the system under consideration was shown. It was found that the maximum net power was generated in 6 mol dm^–3 NaOH. The specific power in such a solution can reach a value of 8 mW cm^–2 at a cell voltage of about 0.15 V. In this case, the hydrogen release rate corresponded to a current density of 60 mA cm^–2.

Graphical abstract

Abstract Image

查看原文本刊更多论文

生产氢气，降低能耗，用于燃料电池和能源领域

摘要利用一个系统分析了提高氢气释放率和降低能耗的可能性，在该系统中，金属（铝）的阳极溶解过程发生在一个电极上，而氢气释放过程发生在另一个电极（镍）上。实验证实，在浓度为 6-8 mol dm-3 的 NaOH 溶液中，电池电压约为 0.5 V，电流密度约为 400 mA cm-2，即可产生氢气。当电极短路时，当铝溶解时，镍上产生氢气的速率相当于电流密度 ~ 100 mA cm-2。研究表明，在所考虑的系统中，可以同时制氢和发电。研究发现，在 6 mol dm-3 NaOH 溶液中产生的净功率最大。在这种情况下，氢气释放率相当于 60 mA cm-2 的电流密度。图表摘要

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Monatshefte für Chemie / Chemical Monthly

自引率

0.00%

发文量