AI Article Synopsis
- Researchers are focusing on developing low-cost, efficient catalysts for the oxygen reduction reaction (ORR) to enhance the practical use of fuel cells.
- The Mn-N-C catalyst was created using a hydrogel from sodium alginate and manganese, with g-CN added to improve its surface area and nitrogen content.
- This Mn-N-C catalyst shows impressive ORR performance in alkaline environments, outperforming the commercial Pt/C catalyst in both activity and stability.
Article Abstract
The research on low-cost, high-performance non platinum group metal (PGM) oxygen reduction reaction (ORR) catalysts is of great significance for the rapid promotion of fuel cells' practical applications. In this work, Mn-N-C catalyst with outstanding activity was prepared through using hydrogel formed by coordination of sodium alginate (SA) and Mnas the precursor. During the preparation process, g-CNwas added to improve the surface area enrich the pore structure of catalysts, as well as to function as the nitrogen source. Compare with commercial Pt/C catalyst, the optimum Mn-N-C catalyst possesses extraordinary ORR activity in alkaline electrolytes, with a half-wave potential () of 0.90 V. In addition, the Mn-N-C catalyst also displays exceptional stability in alkaline and acidic electrolytes, much superior to Pt/C catalyst.
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| http://dx.doi.org/10.1088/1361-6528/ac5aed | DOI Listing |
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