Revealing Compositional Evolution of PdAu Electrocatalyst by Atom Probe Tomography
Source abstract
Abstract
High Resolution Image Download MS PowerPoint Slide Pd-based electro-catalysts are a key component to improve the methanol oxidation reaction (MOR) kinetics from alcohol fuel cells. However, the performance of such catalysts is degraded over time. To understand the microstructural/atomic scale chemical changes responsible for such an effect, scanning (transmission) electron microscopy measurements and atom probe tomography were performed after accelerated degradation tests. No morphological changes are observed after 1000 MOR cycles. In contrast, (1) Pd and B are leached from PdAu nanoparticles and (2) Au-rich regions are formed at the surface of the catalyst. These insights highlight the importance of understanding the chemical modification occurring upon MOR to design new catalysts.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Materials Characterization Techniques · Electrocatalysts for Energy Conversion · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, 40237 Düsseldorf, Germany
Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
Department of Materials, Imperial College London, SW7 2AZ London, U.K.
Funding
Deutsche Forschungsgemeinschaft · Alexander von Humboldt-Stiftung
References (57)
Show source-provided references
1. 10.1016/S0378-7753(01)00954-510.1016/S0378-7753(01)00954-5 ↗
2. 10.1016/j.mtchem.2019.06.00410.1016/j.mtchem.2019.06.004 ↗
3. 10.1016/j.apcatb.2017.02.08210.1016/j.apcatb.2017.02.082 ↗
4. 10.1016/j.jpowsour.2009.01.04410.1016/j.jpowsour.2009.01.044 ↗
5. 10.1021/acs.inorgchem.1c0088510.1021/acs.inorgchem.1c00885 ↗
6. 10.1016/j.cej.2022.13566610.1016/j.cej.2022.135666 ↗
7. 10.1016/j.jcis.2021.12.11110.1016/j.jcis.2021.12.111 ↗
8. 10.1021/acs.jpcc.8b0540710.1021/acs.jpcc.8b05407 ↗
9. 10.1002/adma.20060291110.1002/adma.200602911 ↗
10. 10.1007/s12678-019-00515-810.1007/s12678-019-00515-8 ↗
11. 10.1016/j.apcatb.2016.06.05510.1016/j.apcatb.2016.06.055 ↗
12. 10.1149/1.298196710.1149/1.2981967 ↗
13. 10.1038/s41467-019-11766-w10.1038/s41467-019-11766-w ↗
14. 10.1021/jacs.2c0398210.1021/jacs.2c03982 ↗
15. 10.1016/j.electacta.2014.02.07610.1016/j.electacta.2014.02.076 ↗
16. 10.1016/j.ijhydene.2020.06.10110.1016/j.ijhydene.2020.06.101 ↗
17. 10.1021/acsami.9b1355710.1021/acsami.9b13557 ↗
18. 10.1021/ja207308b10.1021/ja207308b ↗
19. 10.1007/s12274-022-4565-210.1007/s12274-022-4565-2 ↗
20. 10.1016/j.surfcoat.2007.07.03510.1016/j.surfcoat.2007.07.035 ↗
21. 10.1002/chem.20110367410.1002/chem.201103674 ↗
22. 10.1149/1.309567510.1149/1.3095675 ↗
23. 10.1016/j.ijhydene.2019.05.04810.1016/j.ijhydene.2019.05.048 ↗
24. 10.1038/srep0428810.1038/srep04288 ↗
25. 10.1007/s11581-020-03461-410.1007/s11581-020-03461-4 ↗
26. 10.1021/jp060837210.1021/jp0608372 ↗
27. 10.1021/acs.jpcc.5b0396510.1021/acs.jpcc.5b03965 ↗
28. 10.1088/1361-6528/ac757510.1088/1361-6528/ac7575 ↗
29. 10.1016/j.jallcom.2013.02.17010.1016/j.jallcom.2013.02.170 ↗
30. 10.1016/j.catcom.2021.10633810.1016/j.catcom.2021.106338 ↗
31. 10.1021/acsaem.9b0167410.1021/acsaem.9b01674 ↗
32. 10.1039/c3ta11592e10.1039/c3ta11592e ↗
33. 10.1016/j.jpowsour.2009.08.07910.1016/j.jpowsour.2009.08.079 ↗
34. 10.1016/j.electacta.2010.09.01810.1016/j.electacta.2010.09.018 ↗
35. 10.1039/C2TA00725H10.1039/C2TA00725H ↗
36. 10.1039/c0ee00579g10.1039/c0ee00579g ↗
37. 10.1021/jacs.1c1168010.1021/jacs.1c11680 ↗
38. 10.1002/aenm.20190194510.1002/aenm.201901945 ↗
39. 10.1002/ange.20191307910.1002/ange.201913079 ↗
40. 10.1038/s41467-020-15391-w10.1038/s41467-020-15391-w ↗
41. 10.1016/j.ultramic.2018.04.00510.1016/j.ultramic.2018.04.005 ↗
42. 10.1002/adma.20220303010.1002/adma.202203030 ↗
43. 10.1039/B308177J10.1039/B308177J ↗
44. 10.1021/nl070694a10.1021/nl070694a ↗
45. 10.1103/PhysRevB.56.582210.1103/PhysRevB.56.5822 ↗
46. 10.1016/j.susc.2007.08.02210.1016/j.susc.2007.08.022 ↗
47. 10.1039/D1TA03103A10.1039/D1TA03103A ↗
48. 10.1002/ente.20190095510.1002/ente.201900955 ↗
49. 10.1039/c2jm15426a10.1039/c2jm15426a ↗
50. 10.1039/jm992020087510.1039/jm9920200875 ↗
51. 10.1149/2.0711711jes10.1149/2.0711711jes ↗
52. 10.1007/BF0321504110.1007/BF03215041 ↗
53. 10.1002/sia.170810.1002/sia.1708 ↗
54. 10.1016/j.jpowsour.2009.01.07710.1016/j.jpowsour.2009.01.077 ↗
55. 10.1016/j.elecom.2007.01.03810.1016/j.elecom.2007.01.038 ↗
56. 10.1016/j.jcis.2022.09.09310.1016/j.jcis.2022.09.093 ↗
57. 10.1016/j.catcom.2015.09.03310.1016/j.catcom.2015.09.033 ↗