| 학회 |
한국재료학회 |
| 학술대회 |
2019년 봄 (05/15 ~ 05/17, 평창 알펜시아 리조트) |
| 권호 |
25권 1호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Synthesis of Cobalt Nitride with N-doped Carbon for the Overall Water Splitting |
| 초록 |
The high efficient water splitting system should involve the reduction of high overpotential value, which was enhanced the electrocatalytic reaction efficiency of catalysts, during the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), respectively. For the high-performance water splitting system, we synthesized Mesoporous Co3N@Amorphous N-doped carbon nanocubes for OER. Mesoporous Co3N@AN-C NCs demonstrate greater OER activity with a remarkably low Tafel plot (72.5 mV dec-1), low overpotential of 280 mV at a current density of 10 mA cm−2, and excellent cycling stability superior to most reported transition-metal nitride particles. Herein, we confirmed that Co4N was synthesized after higher temperature nitridation (650°C). Co4N has higher electrical conductivity than Co3N, but it has lower specific surface area due to aggregation. Therefore, we report a comparison of the Mesoporous CoxN@Amorphous N-doped Carbon Nanocubes based on in-situ nitridation and calcination at various temperature. The morphology of Mesoporous CoxN@AN-C NCs was analyzed by FE-SEM and TEM. The composition was confirmed by XRD and XPS. Also, specific surface area is analyzed by BET. Finally, we analyzed electrochemical properties of Mesoporous CoxN@AN-C NCs. |
| 저자 |
최형욱1, 윤대호1, 정동인2, 강봉균1, Mohit Kumar3
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| 소속 |
1성균관대, 2나노과학기술학과, 3전자부품(연) |
| 키워드 |
Mesoporous; cobalt nitride; N-doped carbon; Water splitting
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| E-Mail |
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