Carbon Dots Promote the Performance of Anodized Nickel Passivation Film on Ethanol Oxidation by Enhancing Oxidation of the Intermediate†
Yandi Shi
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
Search for more papers by this authorCorresponding Author
Fan Liao
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
E-mail: [email protected]; [email protected]Search for more papers by this authorWenxiang Zhu
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
Search for more papers by this authorHuixian Shi
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
Search for more papers by this authorKui Yin
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
Search for more papers by this authorCorresponding Author
Mingwang Shao
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
E-mail: [email protected]; [email protected]Search for more papers by this authorYandi Shi
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
Search for more papers by this authorCorresponding Author
Fan Liao
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
E-mail: [email protected]; [email protected]Search for more papers by this authorWenxiang Zhu
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
Search for more papers by this authorHuixian Shi
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
Search for more papers by this authorKui Yin
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
Search for more papers by this authorCorresponding Author
Mingwang Shao
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123 China
E-mail: [email protected]; [email protected]Search for more papers by this author†Dedicated to the Special Issue of Nanostructured Materials for Electrochemical Energy Conversion and Storage.
Main observation and conclusion
Ethanol is considered a better fuel than methanol in direct alcohol fuel cells because of the high energy density and low toxicity. Compared with noble metal catalysts, nickel-based catalysts are much cheaper in price. However, present nickel-based catalysts still surfer from some disadvantages such as low activity and high overpotential. In this paper, we show a new and high efficient nickel- based catalyst for ethanol oxidation. A layer of anodized nickel passivation film (Ni-APF) was formed on the surface of nickel sheet by anodic oxidation method with carbon dots (CDs) as co-catalyst. At the current density of 110 mA·cm−2, the potential for Ni-APF/CDs was only 0.541 V (vs. Ag/AgCl), which was 18.8% lower than that of Ni-APF. Low overpotential could reduce electrode thermal loss and increase output energy. Ni-APF/CDs showed 144.4 mA∙cm−2 peak current density at peak potential 0.662 V (vs. Ag/AgCl), which was 31% higher than that of Ni-APF (110.3 mA∙cm−2). In this system, CDs mainly function in the increase of charge-transfer capacity and the promotion oxidation of carbonaceous intermediates.
Supporting Information
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| cjoc202000665-sup-0001-Supinfo.pdfPDF document, 1.9 MB |
Appendix S1: Supporting Information |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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