Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| One-step fabrication of copper sulfide catalysts for HER in natural seawater and their bifunctional properties in freshwater splitting | |
Marimuthu, T.1; Yuvakkumar, R.2; Ravi, G.2; Zheng, Yupeng1; Bi, Zhuoneng1; Xu, Xueqing1 ; Xu, Gang1; Velauthapillai, Dhayalan3
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| 2022-08-15 | |
| Source Publication | FUEL
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| ISSN | 0016-2361 |
| Volume | 322Pages:10 |
| Corresponding Author | Yuvakkumar, R.(yuvakkumarr@alagappauniversity.ac.in) ; Xu, Xueqing(xuxq@ms.giec.ac.cn) |
| Abstract | Natural seawater electrolysis is an efficient technology to produce hydrogen (H2) fuel and protects the environment from pollution. The lack of research on developing a suitable catalyst for hydrogen evolution reaction (HER) impedes generating an H2 sustainable fuel from natural seawater. In this study, copper sulfide (Cu2S) catalysts were successfully fabricated on nickel (Ni) foam with the help of a low-temperature hydrothermal technique by varying the growth temperatures in the range of 60-80 degrees C. The increase in growth temperatures improved the crystalline nature of the chalcocite Cu2S structure. The Cu2S catalyst fabricated at 80 degrees C showed a well-defined and improved the morphology with pores and small nanoparticles compared to other catalysts. An X-ray photoelectron spectroscope (XPS) showed the composition, oxidation state, and binding energy of the Cu2S catalysts. The Cu2S catalyst fabricated at 80 degrees C showed a little overpotential of 445 mV to attain 10 mA/cm2 for HER activity in natural seawater, and possessed higher intrinsic catalytic activity (136.10 mV/dec), electrochemical surface active site (634 cm2), and charge transfer properties (Rct, 4.40 ohm) with better long-term stability (86.7%) compared to other catalysts fabricated at 60 and 70 degrees C. Etching test of the Cu2S-80 degrees C catalyst in diluted hydrochloric (HCl) acid revealed no the insoluble precipitate on catalyst surface with a better 77.74% long-term stability. The bifunctional properties (HER and OER) of Cu2S catalysts for overall splitting were also investigated with three- and two-electrode cell configuration. The Cu2S catalyst fabricated at 80 degrees C exhibited a little overall cell potential of 1.65 V to reach 10 mA/cm2 compared to other Cu2S catalysts in 1 M KOH solution with impressive long-term stability of 99.23% up to 10 h. The Cu2S-80 degrees C catalyst was suitable for hydrogen production in natural seawater. |
| Keyword | Natural seawater Chalcocite copper sulfide Charge transfer properties Bifunctional properties Catalysts |
| DOI | 10.1016/j.fuel.2022.124073 |
| WOS Keyword | HYDROGEN EVOLUTION REACTION ; EFFICIENT ELECTROCATALYST ; CUS NANOSHEETS ; ARRAYS ; NANOPARTICLES ; MICROSPHERES ; NANOSPHERES ; ROBUST ; PHASE ; CU2S |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | UGC-SAP ; DST-FIST ; Project on Collaborative Innovation and Environmental Construction Platform of Guangdong Province ; DST-PURSE ; MHRD-RUSA |
| WOS Research Area | Energy & Fuels ; Engineering |
| Funding Organization | UGC-SAP ; DST-FIST ; Project on Collaborative Innovation and Environmental Construction Platform of Guangdong Province ; DST-PURSE ; MHRD-RUSA |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000807458500001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/36847 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Yuvakkumar, R.; Xu, Xueqing |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 2.Alagappa Univ, Dept Phys, Karaikkudi 630 003, Tamil Nadu, India 3.Western Norway Univ Appl Sci, Fac Engn & Sci, N-5063 Bergen, Norway |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Marimuthu, T.,Yuvakkumar, R.,Ravi, G.,et al. One-step fabrication of copper sulfide catalysts for HER in natural seawater and their bifunctional properties in freshwater splitting[J]. FUEL,2022,322:10. |
| APA | Marimuthu, T..,Yuvakkumar, R..,Ravi, G..,Zheng, Yupeng.,Bi, Zhuoneng.,...&Velauthapillai, Dhayalan.(2022).One-step fabrication of copper sulfide catalysts for HER in natural seawater and their bifunctional properties in freshwater splitting.FUEL,322,10. |
| MLA | Marimuthu, T.,et al."One-step fabrication of copper sulfide catalysts for HER in natural seawater and their bifunctional properties in freshwater splitting".FUEL 322(2022):10. |
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