Co-catalytic Effects of CoS2 on the Activity of the MoS2 Catalyst for Electrochemical Hydrogen Evolution
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作者:
Bose, Ranjith
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Konkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South Korea
Hanyang Univ, Dept Chem Engn, 222 Wangsimni Ro, Seoul 133791, South KoreaKonkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South Korea
Bose, Ranjith
[1
,2
]
Jin, Zhenyu
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Konkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South KoreaKonkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South Korea
Jin, Zhenyu
[1
]
Shin, Seokhee
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Konkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South KoreaKonkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South Korea
Shin, Seokhee
[1
]
Kim, Sungjoon
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Konkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South KoreaKonkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South Korea
Kim, Sungjoon
[1
]
Lee, Sunyoung
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Konkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South KoreaKonkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South Korea
Lee, Sunyoung
[1
]
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Min, Yo-Sep
[1
]
机构:
[1] Konkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South Korea
[2] Hanyang Univ, Dept Chem Engn, 222 Wangsimni Ro, Seoul 133791, South Korea
MoS2 is a promising material to replace the Pt catalyst in the electrochemical hydrogen evolution reaction (HER). It is well known that the activity of the MoS2 catalyst, in the HER is significantly promoted by doping cobalt atoms. Recently, the Co Mo S phase, in which cobalt atoms decorate the edge positions of the MoS2 slabs, has been identified as a co -catalytic phase in the Co -doped MoS2 (Co-MoSx) with low Co content. Here, we report the effect of the incorporation of cobalt atoms in the chemical state of the Co-MoSx catalyst, which gives rise to the co-catalytic effect. Co-MoSx catalysts with various Co contents were prepared on carbon fiber paper by a simple hydrothermal process. On the Co-MoSx catalyst with high Co content (Co/Mo c=.1 2.3), a dramatically higher catalytic activity was observed compared to that for the catalyst with low Co content (Co/Mo 0.36). Furthermore, the co-catalytic phase in the Co-MoSx catalyst with the high Co content was found not to be the Co Mo S phase but was identified as CoS2 by Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy. It is believed that CoS2 is an alternative choice to co-catalyze HER on MoS2-based catalysts.
机构:
Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Guo, Yaxiao
;
Zhang, Xiaoyan
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Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Zhang, Xiaoyan
;
Zhang, Xueping
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Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Zhang, Xueping
;
You, Tianyan
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Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R ChinaChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
机构:
Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Guo, Yaxiao
;
Zhang, Xiaoyan
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机构:
Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Zhang, Xiaoyan
;
Zhang, Xueping
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机构:
Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
Zhang, Xueping
;
You, Tianyan
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机构:
Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R ChinaChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China