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Carbon-Based Electrocatalysts for Acidic Oxygen Reduction Reaction |
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| Authors: | Pengbo Cui Linjie Zhao Dr. Yongde Long Prof. Liming Dai Prof. Chuangang Hu |
| Affiliation: | 1. State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029 China These authors contributed equally to this work.;2. State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029 China;3. ARC Centre of Excellence for Carbon Science and Innovation, University of New South Wales, Sydney, NSW 2052 Australia |
| Abstract: | Oxygen reduction reaction (ORR) is vital for clean and renewable energy technologies, which require no fossil fuel but catalysts. Platinum (Pt) is the best-known catalyst for ORR. However, its high cost and scarcity have severely hindered renewable energy devices (e.g., fuel cells) for large-scale applications. Recent breakthroughs in carbon-based metal-free electrochemical catalysts (C-MFECs) show great potential for earth-abundant carbon materials as low-cost metal-free electrocatalysts towards ORR in acidic media. This article provides a focused, but critical review on C-MFECs for ORR in acidic media with an emphasis on advances in the structure design and synthesis, fundamental understanding of the structure-property relationship and electrocatalytic mechanisms, and their applications in proton exchange membrane fuel cells. Current challenges and future perspectives in this emerging field are also discussed. |
| Keywords: | Acidic Media Carbon-Based Metal-Free Electrocatalysts Fuel Cells Future Opportunities Oxygen Reduction Reaction |