DataVXACS Energy LettersPaper
journal article·2024-06-14

Iridium Selenium Oxyhydroxide Shell for Polymer Electrolyte Membrane Water Electrolyzer with Low Ir Loading

Myeong-Geun Kim, Hyun Ju Lee, Tae Kyung Lee, Eungjun Lee, Haneul Jin, Jae-Hyun Park, Se Youn Cho, Sungho Lee, Hyung Chul Ham, Sung Jong Yoo

ACS Energy Letters· Volume 9· Issue 6
Publisher page
Source abstract

Abstract

Low-Ir electrocatalysts are crucial for developing large-scale polymer-electrolyte-membrane water electrolysis (PEMWE) facilities, which are necessary to advance the hydrogen economy. However, the performance and durability of low-Ir electrocatalysts are unsatisfactory. To address this issue, we prepared selenium-modified Ir nanoparticles on high-crystalline-carbon (HCC) supports. The introduction of HCC supports effectively reduced Ir usage, and Se incorporation mitigated Ir degradation. Se nucleophiles suppressed the electrochemical oxidation of Ir, leading to the formation of a unique nanostructure featuring an ultrathin IrO x H y Se z shell and a crystalline Ir core. Theoretical calculations indicated that the electronic structure of Ir and its binding affinity with *O were modified, thereby enhancing the catalytic activities. Ir-IrO x H y Se z /HCC exhibited outstanding PEMWE performances (Ir-mass specific power of 23.69 kW·gIr –1; durability for 370 h) with a small amount of Ir (0.05 mg·cm –2 ). Thus, employing a carbon support and nucleophile-induced nanostructures can serve as a strategy to ensure long-term PEMWE performance while reducing Ir usage.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storagePolymersNanomaterialsCatalysis & surfaces

OpenAlex topics: Fuel Cells and Related Materials · Hybrid Renewable Energy Systems · Advanced Battery Materials and Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Hydrogen·Fuel Cell Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea

Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials, Inha University, Incheon, 22212, Republic of Korea

Department of Chemical and Biological Engineering, Korea University, 5-1 Anam-dong, Seongbuk-gu, Seoul 02841, Republic of Korea

Department of Energy and Materials Engineering, Dongguk University−Seoul, Seoul 04620, Republic of Korea

Institute of Advanced Composite Materials, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeollabuk-do 55324, Republic of Korea

Department of Nano Material Engineering, KIST School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic Korea

Division of Energy & Environment Technology, KIST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea

Funding

National Research Foundation of Korea · Korea Institute of Energy Technology Evaluation and Planning

References (54)

Show source-provided references
1. 10.1002/aenm.20210199810.1002/aenm.202101998 ↗
2. 10.1149/1945-7111/ac6d1410.1149/1945-7111/ac6d14 ↗
3. IRENA. Green hydrogen cost reduction: scaling up electrolysers to meet the 1.5 °C climate goal; International Renewable Energy Agency: Abu Dhabi, 2020.
4. 10.1021/acscatal.0c0461310.1021/acscatal.0c04613 ↗
5. 10.1021/acscatal.3c0624310.1021/acscatal.3c06243 ↗
6. 10.1021/acsanm.3c0469710.1021/acsanm.3c04697 ↗
7. 10.1002/aenm.20230335310.1002/aenm.202303353 ↗
8. 10.1039/C5SC00518C10.1039/C5SC00518C ↗
9. 10.1021/jacs.6b0719910.1021/jacs.6b07199 ↗
10. 10.1016/j.apcatb.2020.11943310.1016/j.apcatb.2020.119433 ↗
11. 10.1039/D3EE00987D10.1039/D3EE00987D ↗
12. 10.1002/adfm.20210846510.1002/adfm.202108465 ↗
13. 10.1038/s41929-018-0153-y10.1038/s41929-018-0153-y ↗
14. 10.1016/j.jcat.2021.02.02610.1016/j.jcat.2021.02.026 ↗
15. 10.1021/acs.langmuir.9b0009310.1021/acs.langmuir.9b00093 ↗
16. 10.1021/acs.jpcc.5b0336110.1021/acs.jpcc.5b03361 ↗
17. 10.1039/D1TA00765C10.1039/D1TA00765C ↗
18. 10.1039/C8SC00555A10.1039/C8SC00555A ↗
19. 10.1038/s41565-021-01070-410.1038/s41565-021-01070-4 ↗
20. 10.1002/anie.20211035210.1002/anie.202110352 ↗
21. 10.1016/j.ijhydene.2022.08.27510.1016/j.ijhydene.2022.08.275 ↗
22. 10.1039/C5SC00461F10.1039/C5SC00461F ↗
23. 10.1016/j.chempr.2022.02.00310.1016/j.chempr.2022.02.003 ↗
24. 10.1021/jacs.1c0347310.1021/jacs.1c03473 ↗
25. 10.1002/adfm.20190619410.1002/adfm.201906194 ↗
26. 10.1002/anie.20190775210.1002/anie.201907752 ↗
27. 10.1002/cphc.20170120610.1002/cphc.201701206 ↗
28. 10.1021/acs.chemrev.9b0044310.1021/acs.chemrev.9b00443 ↗
29. 10.1021/jacs.0c1274010.1021/jacs.0c12740 ↗
30. 10.1021/jacs.1c0038410.1021/jacs.1c00384 ↗
31. 10.1002/adma.20170379810.1002/adma.201703798 ↗
32. 10.1021/acs.jpcc.1c0747510.1021/acs.jpcc.1c07475 ↗
33. 10.1002/aenm.20210288310.1002/aenm.202102883 ↗
34. 10.1021/acsami.8b1197010.1021/acsami.8b11970 ↗
35. 10.1038/s41560-021-00948-w10.1038/s41560-021-00948-w ↗
36. 10.1038/s41467-021-26025-010.1038/s41467-021-26025-0 ↗
37. 10.1021/acs.nanolett.0c0487810.1021/acs.nanolett.0c04878 ↗
38. 10.1016/j.nanoen.2017.10.03310.1016/j.nanoen.2017.10.033 ↗
39. 10.1021/acsnano.9b0624410.1021/acsnano.9b06244 ↗
40. 10.1021/acs.chemmater.9b0201110.1021/acs.chemmater.9b02011 ↗
41. 10.1002/anie.20190173210.1002/anie.201901732 ↗
42. 10.1016/j.apcatb.2020.11939410.1016/j.apcatb.2020.119394 ↗
43. 10.1021/ja075180s10.1021/ja075180s ↗
44. 10.1038/s41467-021-24578-810.1038/s41467-021-24578-8 ↗
45. 10.1016/j.jpowsour.2019.04.04510.1016/j.jpowsour.2019.04.045 ↗
46. 10.1016/j.cej.2020.12769610.1016/j.cej.2020.127696 ↗
47. 10.1016/j.apcatb.2015.09.01310.1016/j.apcatb.2015.09.013 ↗
48. 10.1039/C7NR07224D10.1039/C7NR07224D ↗
49. 10.1016/j.apcatb.2020.11876210.1016/j.apcatb.2020.118762 ↗
50. 10.1016/j.jpowsour.2017.09.02010.1016/j.jpowsour.2017.09.020 ↗
51. 10.1016/j.electacta.2021.13888510.1016/j.electacta.2021.138885 ↗
52. 10.1016/j.jpowsour.2021.23050610.1016/j.jpowsour.2021.230506 ↗
53. 10.1021/acs.nanolett.3c0133110.1021/acs.nanolett.3c01331 ↗
54. 10.1038/s41467-023-37091-x10.1038/s41467-023-37091-x ↗