Electrochemical Reactivity of Faceted β-Co(OH)2Single Crystal Platelet Particles in Alkaline Electrolytes
Source abstract
Abstract
Oxygen evolution reaction is the kinetic bottleneck in the generation of H 2 gas through the electrolysis of water. Understanding how water is electrochemically converted to oxygen is key to the development of high-performance electrocatalysts that can enable energy storage technologies based on water to hydrogen fuel generation. The use of well-defined metal oxide systems allows for the isolation of spatial reactivity in bulk redox conversion and oxygen evolution reactions. Herein, we investigate the electrochemical reactivity of well-faceted single-crystalline β-Co(OH) 2 platelet particles in alkaline solutions as a function of pH, potential, and mass loading. A geometrical model that describes the electrochemically active surface area contributions for a porous electrode of stacked high-aspect ratio particles is developed, which pinpoints the origin of reactivity for redox conversion processes and oxygen evolution at the edge facets of the particles.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
Funding
Basic Energy Sciences · National Science Foundation
References (43)
Show source-provided references
1. 10.1002/cctc.20100012610.1002/cctc.201000126 ↗
2. 10.1016/s0013-4686(00)00338-810.1016/s0013-4686(00)00338-8 ↗
3. 10.1002/cctc.20100039710.1002/cctc.201000397 ↗
4. Hamdani M. · Int. J. Electrochem. Sci. · 2010 · 5 · 55610.1016/S1452-3981(23)15306-5 ↗
5. 10.1038/nmat493810.1038/nmat4938 ↗
6. 10.1038/nmat476410.1038/nmat4764 ↗
7. 10.1039/c5cp04248h10.1039/c5cp04248h ↗
8. 10.1126/science.116201810.1126/science.1162018 ↗
9. 10.1038/ncomms910610.1038/ncomms9106 ↗
10. 10.1016/j.electacta.2014.04.03610.1016/j.electacta.2014.04.036 ↗
11. 10.1021/ja200559j10.1021/ja200559j ↗
12. 10.1021/cm400579k10.1021/cm400579k ↗
13. 10.1038/srep1216710.1038/srep12167 ↗
14. 10.1021/ja300008410.1021/ja3000084 ↗
15. 10.1021/ja307507a10.1021/ja307507a ↗
16. 10.1021/ja205647m10.1021/ja205647m ↗
17. 10.1016/j.jelechem.2009.11.02410.1016/j.jelechem.2009.11.024 ↗
18. 10.1021/ja405997s10.1021/ja405997s ↗
19. 10.1021/jp306303y10.1021/jp306303y ↗
20. 10.1021/ja104587v10.1021/ja104587v ↗
21. 10.1039/c5ta07586f10.1039/c5ta07586f ↗
22. 10.1021/ja407115p10.1021/ja407115p ↗
23. 10.1021/ja052333810.1021/ja0523338 ↗
24. 10.1002/adfm.20110215510.1002/adfm.201102155 ↗
25. 10.1007/s00706005026710.1007/s007060050267 ↗
26. 10.1103/physrevb.85.23543810.1103/physrevb.85.235438 ↗
27. Conway B. E. · 199910.1007/978-1-4757-3058-6 ↗
28. 10.1038/ncomms1519410.1038/ncomms15194 ↗
29. Robinson R. A. · 2013
30. 10.1016/0013-4686(90)87025-w10.1016/0013-4686(90)87025-w ↗
31. 10.1038/nmat400010.1038/nmat4000 ↗
32. 10.1038/nmat261210.1038/nmat2612 ↗
33. 10.1021/jp074464w10.1021/jp074464w ↗
34. 10.1021/jp970490q10.1021/jp970490q ↗
35. 10.1021/cm403785q10.1021/cm403785q ↗
36. 10.1126/science.121285810.1126/science.1212858 ↗
37. 10.1021/ja106102b10.1021/ja106102b ↗
38. 10.1007/bf0100782110.1007/bf01007821 ↗
39. 10.1021/acscatal.8b0482310.1021/acscatal.8b04823 ↗
40. 10.1021/jp805876e10.1021/jp805876e ↗
41. 10.1016/j.cattod.2015.10.00610.1016/j.cattod.2015.10.006 ↗
42. 10.1038/s41929-018-0141-210.1038/s41929-018-0141-2 ↗
43. 10.1016/j.jpowsour.2005.04.00710.1016/j.jpowsour.2005.04.007 ↗