The Electrochemical Acetone/Isopropanol Hydrogenation Cycle – An Alternative to Current Hydrogen Storage Solutions

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2024-11-20 DOI:10.1002/aenm.202403824

Dominik Venus, Axel Marth, Sebastian Riess, Anna T.S. Freiberg, Matthew Brodt, Michael Wensing, Peter Wasserscheid, Simon Thiele

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Abstract

Liquid organic hydrogen carrier (LOHC) systems offer a promising way to store hydrogen using the existing infrastructure for liquid fuels. While LOHC hydrogenation and dehydrogenation processes have so far mainly been investigated using thermocatalytic processes, this work explores the concept of a low-temperature (<80 °C) electrochemical acetone/isopropanol LOHC cycle and indicates its potential benefits for a future hydrogen economy. This electrochemical liquid organic hydrogen carrier (EC-LOHC) system builds on low-cost chemicals with low ecotoxicology. In this study, the influence of temperature and fuel concentrations on the polarization curves of the electrochemical hydrogenation and dehydrogenation units in a small, single-cell set-up is investigated using proton exchange membrane fuel cell components. Based on the experimental results, efficiencies are determined for a power-to-power cycle that can be competitive to mature hydrogen storage technologies, such as liquid and compressed hydrogen storage. Finally, material-related challenges are discussed, encouraging future research in this new field of hydrogen storage.

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电化学丙酮/异丙醇氢化循环--当前储氢解决方案的替代方案

液态有机氢载体（LOHC）系统为利用现有的液体燃料基础设施储存氢气提供了一种前景广阔的方法。迄今为止，对液态有机氢载体加氢和脱氢过程的研究主要采用热催化过程，而本研究则探索了低温（80 °C）电化学丙酮/异丙醇液态有机氢载体循环的概念，并指出了其对未来氢经济的潜在好处。这种电化学液态有机氢载体（EC-LOHC）系统基于低成本、低生态毒性的化学品。本研究使用质子交换膜燃料电池组件，研究了温度和燃料浓度对小型单电池装置中电化学加氢和脱氢单元极化曲线的影响。根据实验结果，确定了功率到功率循环的效率，该效率可与成熟的氢存储技术（如液氢和压缩氢存储）相媲美。最后，还讨论了与材料有关的挑战，鼓励未来在这一新的储氢领域开展研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.