Active Site Formation for Oxygen Reduction Reaction on Carbon-Support-Free Titanium Oxynitride with Boosted Activity in Acidic Media
Source abstract
Abstract
An active site formation process for recently reported carbon-support-free titanium oxynitride (TiOxNy) catalysts is investigated to reveal the critical factors for enhancing the oxygen reduction reaction (ORR) activity in acidic media. Neither the titanium source nor the presence of a conductive oxide support is a key to displaying activity whereas an oxidized TiN surface is revealed to be necessary. The ORR activity is successfully enhanced without using a carbon support to the level of the best carbon-supported oxide-based catalyst, zirconium oxynitride on multiwalled carbon nanotube in 0.1 mol dm–3 H2SO4 solution, mainly by optimizing hydrochloric acid concentration in the precursor dispersion to increase the surface nitrogen content. The catalyst is stable; i.e., the activity remained unchanged after 20 000 potential cycles between 0.6 and 1.0 V versus reversible hydrogen electrode.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Semiconductor materials and devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Sustainable Energy, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
Department of Electronics and Information Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
Funding
Ministry of Education, Culture, Sports, Science and Technology · Nippon Sheet Glass Foundation for Materials Science and Engineering · Kato Foundation for Promotion of Science · The Murata Science Foundation · Yashima Environment Technology Foundation · Nippon Life Insurance Foundation
References (49)
Show source-provided references
1. 10.1039/c001674h10.1039/c001674h ↗
2. 10.1149/2.0211514jes10.1149/2.0211514jes ↗
3. U.S. Department of the Interior. Mineral Commodity Summaries; 2017; p 126.https://minerals.usgs.gov/minerals/pubs/mcs/2017/mcs2017.pdf (Last accessed on Nov. 2, 2017).
4. Larminie, J.; Dicks, A. In Fuel Cell Systems Explained, 2nd ed. John Wiley and Sons Ltd.: Chichester, 2003; p 51.10.1002/9781118878330 ↗
5. 10.1149/2.F03152if10.1149/2.F03152if ↗
6. 10.1149/1.363561110.1149/1.3635611 ↗
7. 10.1021/am900219g10.1021/am900219g ↗
8. 10.1002/adma.20160445610.1002/adma.201604456 ↗
9. 10.1038/ncomms142710.1038/ncomms1427 ↗
10. 10.1002/anie.20150315910.1002/anie.201503159 ↗
11. 10.1073/pnas.150715911210.1073/pnas.1507159112 ↗
12. 10.1038/srep2327610.1038/srep23276 ↗
13. 10.1039/C6TA10190A10.1039/C6TA10190A ↗
14. 10.1016/j.nanoen.2016.02.03810.1016/j.nanoen.2016.02.038 ↗
15. 10.1149/1.194355010.1149/1.1943550 ↗
16. 10.1016/j.electacta.2006.08.05910.1016/j.electacta.2006.08.059 ↗
17. 10.1016/j.electacta.2008.02.09210.1016/j.electacta.2008.02.092 ↗
18. 10.1016/j.electacta.2011.02.08410.1016/j.electacta.2011.02.084 ↗
19. Chisaka M. · 2017 · 42310.1002/9783527803873.ch14 ↗
20. 10.1016/j.jpowsour.2007.07.06710.1016/j.jpowsour.2007.07.067 ↗
21. 10.1016/j.electacta.2010.04.09010.1016/j.electacta.2010.04.090 ↗
22. 10.1021/jp206810710.1021/jp2068107 ↗
23. 10.1021/cs400525u10.1021/cs400525u ↗
24. 10.1039/C5CP00317B10.1039/C5CP00317B ↗
25. 10.1039/C5TA03860J10.1039/C5TA03860J ↗
26. 10.1021/acsomega.6b0055510.1021/acsomega.6b00555 ↗
27. 10.1016/j.jpowsour.2014.09.06910.1016/j.jpowsour.2014.09.069 ↗
28. 10.1002/celc.20130005810.1002/celc.201300058 ↗
29. 10.1002/cctc.20140302610.1002/cctc.201403026 ↗
30. 10.1016/j.electacta.2015.10.18410.1016/j.electacta.2015.10.184 ↗
31. 10.1149/1.189646610.1149/1.1896466 ↗
32. 10.1149/1.283331010.1149/1.2833310 ↗
33. 10.1021/ja904810h10.1021/ja904810h ↗
34. 10.1073/pnas.131966311110.1073/pnas.1319663111 ↗
35. 10.1021/acscatal.6b0060010.1021/acscatal.6b00600 ↗
36. 10.1016/j.electacta.2016.08.03210.1016/j.electacta.2016.08.032 ↗
37. 10.1021/jp021182h10.1021/jp021182h ↗
38. 10.1016/j.electacta.2015.03.21110.1016/j.electacta.2015.03.211 ↗
39. 10.1039/C5TA08235H10.1039/C5TA08235H ↗
40. 10.1016/j.ijrmhm.2010.05.00810.1016/j.ijrmhm.2010.05.008 ↗
41. 10.1016/j.apcata.2005.01.02810.1016/j.apcata.2005.01.028 ↗
42. 10.1063/1.35146510.1063/1.351465 ↗
43. 10.1002/sia.74006060310.1002/sia.740060603 ↗
44. 10.1039/b819006b10.1039/b819006b ↗
45. 10.1021/jp066156o10.1021/jp066156o ↗
46. 10.1039/c0jm00376j10.1039/c0jm00376j ↗
47. 10.1021/ja01623a01110.1021/ja01623a011 ↗
48. 10.1021/jp073448w10.1021/jp073448w ↗
49. 10.1134/S002016851703013X10.1134/S002016851703013X ↗