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| Type |
Poster Presentation |
| Area |
Inorganic Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 18일 (목요일) 11:00~12:30 |
| Code |
INOR.P-31 |
| Subject |
Highly activated hollow rhodium phosphide/sulfide: an efficient and robust electrocatalyst toward hydrogen evolution reaction |
| Authors |
Yongju Hong, Haneul Jin, Taekyung Kim, Kwangyeol Lee*
Department of Chemistry, Korea University, Korea
|
| Abstract |
The highly active and robust catalysts for the hydrogen evolution reaction (HER) are of paramount importance for the realization of hydrogen society through accelerating hydrogen production. Various transition metal phosphides, as alternative to Pt-based catalysts, with considerable catalytic performances toward HER have been reported, but their performances are still pitifully inferior to that of Pt/C. Therefore, the catalytic performance of these materials needs significant advances to replace the precious and rare Pt-based catalysts. As a method to fine-tune the surface energy states of the metal sulfide-based catalyst, the partial substitution of sulfur with phosphorous atoms has gained recent interest. Here, we synthesized rhodium-based mixed phosphosulfides by post-phosphorization of hollow rhodium sulfide and found that this anion replacement leads to a great enhancement of catalytic activity toward HER. The hollow cores and rough surface formed by the ion exchange and in-situ generated active sites seem to contribute greatly to the excellent electrocatalytic performance toward HER. |
| E-mail |
dydwn410@korea.ac.kr |
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123rd General Meeting of the KCS