Design of anti-poisoning catalysts for hydrogen oxidation reaction in next-generation anion exchange membrane fuel cells
Extensive research has been conducted on hydrocarbon-based ionomers and membranes with high ionic conductivity and chemical stability for next-generation anion exchange membrane fuel cells (AEMFCs). However, it is well known that the benzene groups of hydrocarbon-based ionomers seriously poison the...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248124001954 |
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| author | Jiho Min Yunjin Kim Seunghyun Lee Keonwoo Ko Sourabh S. Chougule Abhishek A. Chavan Khikmatulla Davletbaev Beomjun Pak Hyelim Park Sung-Dae Yim Namgee Jung |
| author_facet | Jiho Min Yunjin Kim Seunghyun Lee Keonwoo Ko Sourabh S. Chougule Abhishek A. Chavan Khikmatulla Davletbaev Beomjun Pak Hyelim Park Sung-Dae Yim Namgee Jung |
| author_sort | Jiho Min |
| collection | DOAJ |
| description | Extensive research has been conducted on hydrocarbon-based ionomers and membranes with high ionic conductivity and chemical stability for next-generation anion exchange membrane fuel cells (AEMFCs). However, it is well known that the benzene groups of hydrocarbon-based ionomers seriously poison the active sites of Pt catalysts, thereby reducing hydrogen oxidation reaction (HOR) activity and AEMFC performance. Over the past years, the development of benzene-tolerant catalysts has mainly focused on metal alloy nanoparticles such as PtRu, without pursuing the design of breakthrough catalyst structures that can more effectively reduce benzene poisoning. Here, we introduce an anti-poisoning catalyst structure promoted by the synergistic effect of carbon shell encapsulation and metal alloying. The porous carbon shell encapsulating the metal nanoparticles is expected to prevent direct adsorption of benzene groups, while the alloying of Pt and Ru can reduce the benzene adsorption energy itself. Comparative electrochemical analysis results confirm that the carbon shell-encapsulated metal alloy catalyst significantly alleviate benzene poisoning, exhibiting superior HOR activity than the conventional alloys in benzyltrimethylammonium hydroxide (BTMAOH) solution. |
| format | Article |
| id | doaj-art-464f2c7ee47141a3ad9af8ed2acdac64 |
| institution | Kabale University |
| issn | 1388-2481 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj-art-464f2c7ee47141a3ad9af8ed2acdac642025-01-12T05:24:25ZengElsevierElectrochemistry Communications1388-24812025-01-01170107852Design of anti-poisoning catalysts for hydrogen oxidation reaction in next-generation anion exchange membrane fuel cellsJiho Min0Yunjin Kim1Seunghyun Lee2Keonwoo Ko3Sourabh S. Chougule4Abhishek A. Chavan5Khikmatulla Davletbaev6Beomjun Pak7Hyelim Park8Sung-Dae Yim9Namgee Jung10Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; Fuel Cell Laboratory, Korea Institute of Energy Research (KIER), Daejeon 34129, Republic of KoreaGraduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of KoreaGraduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of KoreaGraduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of KoreaGraduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of KoreaGraduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of KoreaGraduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of KoreaGraduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of KoreaGraduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of KoreaFuel Cell Laboratory, Korea Institute of Energy Research (KIER), Daejeon 34129, Republic of Korea; Corresponding authors.Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehark-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; Corresponding authors.Extensive research has been conducted on hydrocarbon-based ionomers and membranes with high ionic conductivity and chemical stability for next-generation anion exchange membrane fuel cells (AEMFCs). However, it is well known that the benzene groups of hydrocarbon-based ionomers seriously poison the active sites of Pt catalysts, thereby reducing hydrogen oxidation reaction (HOR) activity and AEMFC performance. Over the past years, the development of benzene-tolerant catalysts has mainly focused on metal alloy nanoparticles such as PtRu, without pursuing the design of breakthrough catalyst structures that can more effectively reduce benzene poisoning. Here, we introduce an anti-poisoning catalyst structure promoted by the synergistic effect of carbon shell encapsulation and metal alloying. The porous carbon shell encapsulating the metal nanoparticles is expected to prevent direct adsorption of benzene groups, while the alloying of Pt and Ru can reduce the benzene adsorption energy itself. Comparative electrochemical analysis results confirm that the carbon shell-encapsulated metal alloy catalyst significantly alleviate benzene poisoning, exhibiting superior HOR activity than the conventional alloys in benzyltrimethylammonium hydroxide (BTMAOH) solution.http://www.sciencedirect.com/science/article/pii/S1388248124001954Anion exchange membrane fuel cellsHydrocarbon-based ionomersHydrogen oxidation reactionBenzene poisoningAlloying effectCarbon shell encapsulation |
| spellingShingle | Jiho Min Yunjin Kim Seunghyun Lee Keonwoo Ko Sourabh S. Chougule Abhishek A. Chavan Khikmatulla Davletbaev Beomjun Pak Hyelim Park Sung-Dae Yim Namgee Jung Design of anti-poisoning catalysts for hydrogen oxidation reaction in next-generation anion exchange membrane fuel cells Electrochemistry Communications Anion exchange membrane fuel cells Hydrocarbon-based ionomers Hydrogen oxidation reaction Benzene poisoning Alloying effect Carbon shell encapsulation |
| title | Design of anti-poisoning catalysts for hydrogen oxidation reaction in next-generation anion exchange membrane fuel cells |
| title_full | Design of anti-poisoning catalysts for hydrogen oxidation reaction in next-generation anion exchange membrane fuel cells |
| title_fullStr | Design of anti-poisoning catalysts for hydrogen oxidation reaction in next-generation anion exchange membrane fuel cells |
| title_full_unstemmed | Design of anti-poisoning catalysts for hydrogen oxidation reaction in next-generation anion exchange membrane fuel cells |
| title_short | Design of anti-poisoning catalysts for hydrogen oxidation reaction in next-generation anion exchange membrane fuel cells |
| title_sort | design of anti poisoning catalysts for hydrogen oxidation reaction in next generation anion exchange membrane fuel cells |
| topic | Anion exchange membrane fuel cells Hydrocarbon-based ionomers Hydrogen oxidation reaction Benzene poisoning Alloying effect Carbon shell encapsulation |
| url | http://www.sciencedirect.com/science/article/pii/S1388248124001954 |
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