首页|100 W-class green hydrogen production from ammonia at a dual-layer electrode containing a Pt-Ir catalyst for an alkaline electrolytic process
100 W-class green hydrogen production from ammonia at a dual-layer electrode containing a Pt-Ir catalyst for an alkaline electrolytic process
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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 CO2-free pure hydrogen.Herein,a heterostructural Pt-Ir dual-layer electrode is developed and shown to achieve successful long-term oper-ation in an ammonia electrolyzer with an anion exchange membrane(AEM).This electrolyzer consisted of eight membrane electrode assemblies(MEAs)with a total geometric area of 200 cm2 on the anode side,which resulted in a hydrogen production rate of 25 L h-1.We observed the degradation in MEA perfor-mance attributed to changes in the anode catalyst layer during hydrogen production via ammonia elec-trolysis.Furthermore,we demonstrated the relationship between the ammonia oxidation reaction(AOR)and the oxygen evolution reaction(OER).
Donghyun Yoon、Sunki Chung、Minjun Choi、Eunhyeok Yang、Jaeyoung Lee
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School of Earth Sciences and Environmental Engineering,Gwangju Institute of Science and Technology(GIST),Gwangju 61005,Republic of Korea
International Future Research Center of Chemical Energy Storage and Conversion Processes,GIST,Gwangju 61005,Republic of Korea
Ertl Center for Electrochemistry and Catalysis,GIST,Gwangju 61005,Republic of Korea
TKG Huchems Co.Ltd,963,Sangam-ro,Yeosu-si,Jeollanam-do 59614,Republic of Korea
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TKG HuchemsKorea Institute of Energy Technology Evaluation and Planning(KETEP)granted financial resources from the Ministry of Trade,InNational Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)
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