Efficient and Stable Acidic Water Oxidation Enabled by Low-Concentration, High-Valence Iridium Sites
Source abstract
Abstract
Electrolysis coupled with renewable energy is essential for green hydrogen production and its application to achieving deep decarbonization. The efficiency of electrolysis is limited by the oxygen evolution reaction (OER), which requires an efficient, low-cost, and acid-stable catalyst for proton exchange membrane (PEM) electrolysis. In this work, we designed a highly active, acid-stable catalyst involving iridium-tungsten trioxide (Ir:WO3/Ir). Our theory predicts that high-valence Ir atoms are active sites for the OER and they can be stabilized in the WO3 matrix. Experimentally, we showed that the Ir:WO3/Ir catalyst achieves a high mass activity of 13.8 A mgIr–1 at 10 mA cm–2 and a stability in 0.5 M H2SO4 for 32 days; such a performance originates from the stabilized high-valence Ir sites with optimized binding energies to oxygen species. Our work demonstrates an effective strategy to obtain low-cost, durable, and efficient OER catalysts to potentially broaden the adoption of PEM electrolyzers.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004 People’s Republic of China
SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
Stanford Synchrotron Radiation Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
Funding
Basic Energy Sciences · National Science Foundation
References (64)
Show source-provided references
1. 10.1002/adma.20150269610.1002/adma.201502696 ↗
2. 10.1039/C6TA08075H10.1039/C6TA08075H ↗
3. 10.1016/j.ijhydene.2005.04.03810.1016/j.ijhydene.2005.04.038 ↗
4. 10.1088/1755-1315/371/4/04202210.1088/1755-1315/371/4/042022 ↗
5. 10.1002/adma.20200632810.1002/adma.202006328 ↗
6. 10.1038/ncomms1198110.1038/ncomms11981 ↗
7. 10.1021/acscatal.1c0186710.1021/acscatal.1c01867 ↗
8. 10.1021/acscatal.9b0143810.1021/acscatal.9b01438 ↗
9. 10.1021/acscatal.6b0324610.1021/acscatal.6b03246 ↗
10. 10.1126/science.aaf505010.1126/science.aaf5050 ↗
11. 10.1038/s41467-017-01734-710.1038/s41467-017-01734-7 ↗
12. 10.1016/j.jelechem.2016.05.01510.1016/j.jelechem.2016.05.015 ↗
13. 10.1016/j.cattod.2015.08.01410.1016/j.cattod.2015.08.014 ↗
14. 10.1021/acscatal.9b0143810.1021/acscatal.9b01438 ↗
15. 10.1002/cctc.20160049710.1002/cctc.201600497 ↗
16. 10.1038/s41467-020-15231-x10.1038/s41467-020-15231-x ↗
17. 10.1021/acs.chemmater.9b0197610.1021/acs.chemmater.9b01976 ↗
18. 10.1073/pnas.210181711810.1073/pnas.2101817118 ↗
19. 10.1021/acs.chemmater.0c0189410.1021/acs.chemmater.0c01894 ↗
20. 10.1038/s41560-021-00948-w10.1038/s41560-021-00948-w ↗
21. 10.1039/C6CC00053C10.1039/C6CC00053C ↗
22. 10.1021/jz201650710.1021/jz2016507 ↗
23. 10.1021/acs.jpclett.9b0017310.1021/acs.jpclett.9b00173 ↗
24. 10.1007/s00214-011-0996-710.1007/s00214-011-0996-7 ↗
25. 10.1016/S0022-0728(83)80203-410.1016/S0022-0728(83)80203-4 ↗
26. 10.1002/ange.20190098110.1002/ange.201900981 ↗
27. 10.1039/C5CP02482J10.1039/C5CP02482J ↗
28. 10.1039/c2ra01366e10.1039/c2ra01366e ↗
29. 10.1002/sia.592710.1002/sia.5927 ↗
30. 10.1038/srep3842910.1038/srep38429 ↗
31. 10.1103/PhysRevLett.112.11760110.1103/PhysRevLett.112.117601 ↗
32. 10.1146/annurev-anchem-061010-11390610.1146/annurev-anchem-061010-113906 ↗
33. 10.1016/j.jre.2022.01.01310.1016/j.jre.2022.01.013 ↗
34. 10.1038/s41597-019-0081-y10.1038/s41597-019-0081-y ↗
35. 10.1021/jacs.6b0719910.1021/jacs.6b07199 ↗
36. 10.1002/ange.20141107210.1002/ange.201411072 ↗
37. 10.1007/s40843-020-1598-510.1007/s40843-020-1598-5 ↗
38. 10.1038/s41467-019-08532-310.1038/s41467-019-08532-3 ↗
39. 10.1002/anie.20190079610.1002/anie.201900796 ↗
40. 10.1021/jacs.1c0347310.1021/jacs.1c03473 ↗
41. 10.1002/anie.20190173210.1002/anie.201901732 ↗
42. 10.1039/C6TA10097J10.1039/C6TA10097J ↗
43. 10.1021/jacs.1c0152510.1021/jacs.1c01525 ↗
44. 10.1126/science.aaf505010.1126/science.aaf5050 ↗
45. 10.1038/s41467-021-26336-210.1038/s41467-021-26336-2 ↗
46. 10.1021/jacs.1c0408710.1021/jacs.1c04087 ↗
47. 10.1038/s41565-021-00986-110.1038/s41565-021-00986-1 ↗
48. 10.1021/acs.nanolett.0c0012710.1021/acs.nanolett.0c00127 ↗
49. 10.1038/s41467-021-26416-310.1038/s41467-021-26416-3 ↗
50. 10.1002/adma.20200143010.1002/adma.202001430 ↗
51. 10.1021/acsami.9b0941210.1021/acsami.9b09412 ↗
52. 10.1038/s41929-018-0153-y10.1038/s41929-018-0153-y ↗
53. 10.1021/acs.chemmater.0c0043210.1021/acs.chemmater.0c00432 ↗
54. 10.1038/nenergy.2016.18910.1038/nenergy.2016.189 ↗
55. 10.1038/s41929-021-00703-010.1038/s41929-021-00703-0 ↗
56. 10.1039/C4SC02685C10.1039/C4SC02685C ↗
57. 10.1038/s41467-019-12886-z10.1038/s41467-019-12886-z ↗
58. 10.1021/acs.nanolett.6b0155410.1021/acs.nanolett.6b01554 ↗
59. 10.1038/s41929-019-0246-210.1038/s41929-019-0246-2 ↗
60. 10.1021/acsnano.9b0624410.1021/acsnano.9b06244 ↗
61. 10.1021/acs.chemmater.6b0262510.1021/acs.chemmater.6b02625 ↗
62. 10.1021/jacs.8b1145610.1021/jacs.8b11456 ↗
63. 10.1038/s41467-019-12859-210.1038/s41467-019-12859-2 ↗
64. 10.1038/s41467-021-23907-110.1038/s41467-021-23907-1 ↗