| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 가을 (10/30 ~ 11/01, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
23권 2호 |
| 발표분야 |
포스터_콜로이드·계면화학 |
| 제목 |
Effective Fabrication and Electrochemical OER Activity of Gold Multipod Nanoparticle Core-Cobalt Sulfide Shell Nanohybrids |
| 초록 |
Hybrid materials with anisotropic noble-metal nanoparticle cores and cagelike transition-metal chalcogenide shells are considered promisng materials in a wide diversity of applications. Herein, a facile preparation of gold multipod nanoparticles (GMNs) embedded within cobalt sulfide nanocage is reported. The as-prepared GMN cores- ZIF-67 shell (GMN@ZIF-67) nanostructures can act as sacrificial templates to the desired nanohybrids composed of multiple GMNs and cobalt sulfide (GMN@CoxSy) nanocages. Electrocatalytic oxygen evolution reaction (OER) of the prepared nanocatalysts reveals that a type of GMN@CoxSy nanohybrid shows a substantially lower overpotential (η) value (345 mV) compared with those of GMNs (617 mV) and CoxSy nanomaterials (418 mV) at a current density of 10 mA cm2, mainly due the highly effective core−shell interfaces as well as the optimized cobalt sulfide shells of the nanohybrids. |
| 저자 |
MAIDUYHIEN, 유효종
|
| 소속 |
한양대 |
| 키워드 |
hybrid nanomaterial; cobalt sulfide; OER
|
| E-Mail |
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