100 W-class green hydrogen production from ammonia at a dual-layer electrode containing a Pt-Ir catalyst for an alkaline electrolytic process  

作　　者：Donghyun Yoon Sunki Chung Minjun Choi Eunhyeok Yang Jaeyoung Lee 

机构地区：[1]School of Earth Sciences and Environmental Engineering,Gwangju Institute of Science and Technology(GIST),Gwangju 61005,Republic of Korea [2]International Future Research Center of Chemical Energy Storage and Conversion Processes,GIST,Gwangju 61005,Republic of Korea [3]Ertl Center for Electrochemistry and Catalysis,GIST,Gwangju 61005,Republic of Korea [4]TKG Huchems Co.Ltd,963,Sangam-ro,Yeosu-si,Jeollanam-do 59614,Republic of Korea

出　　处：《Journal of Energy Chemistry》2024年第6期352-360,I0009,共10页能源化学（英文版）

基　　金：supported by the research program funded by the TKG Huchems;supported by the Korea Institute of Energy Technology Evaluation and Planning(KETEP)granted financial resources from the Ministry of Trade,Industry&Energy,Republic of Korea(20213030040590);supported by a National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(2021R1A5A1028138)。

摘　　要：Ammonia allows storage and transport of hydrogen over long distances and is an attractive potential hydrogen carrier.Electrochemical decomposition has recently been used for the conversion of ammonia to hydrogen and is regarded as a future technology for production of CO_(2)-free pure hydrogen.Herein,a heterostructural Pt-Ir dual-layer electrode is developed and shown to achieve successful long-term operation in an ammonia electrolyzer with an anion exchange membrane(AEM).This electrolyzer consisted of eight membra ne electrode assemblies(MEAs)with a total geometric area of 200 cm~2 on the anode side,which resulted in a hydrogen production rate of 25 L h~(-1).We observed the degradation in MEA performance attributed to changes in the anode catalyst layer during hydrogen production via ammonia electrolysis.Furthermore,we demonstrated the relationship between the ammonia oxidation reaction(AOR)and the oxygen evolution reaction(OER).

关 键 词：Ammonia oxidation Dual-layer catalyst Green hydrogen Electrolytic process Oxygen evolution reaction 

分 类 号：TQ116.2[化学工程—无机化工] TQ426