Abstract
The bifunctional electrocatalysts usually have no good performances simultaneously for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Commercial Pt/C electrocatalyst is expensive and not stable; graphene is a good candidate for electrocatalysis but has low activity due to few active sites. Herein, we dope boron (B) and transitional metal ruthenium (Ru) on graphene to obtain Ru@BG bifunctional electrocatalysts, which show good performances with ∆E of 0.83 V and 0.85 V for 10%Ru@BG and 6%Ru@BG, respectively. Both of 6%Ru@BG and 10%Ru@BG have high half-wave potential of 0.81 V, which are only more negative by 10 mV than Pt/C electrocatalyst. In addition, 10%Ru@BG shows good stability as well as methanol tolerance, which are much superior to Pt/C electrocatalyst. This work highlights a novel bifunctional electrocatalyst and endows potential in efficient energy storage.
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Funding
This work was supported by the National Natural Science Foundation of China (No. 51809129), Basic Scientific Research Business Foundation of Central Public Welfare Scientific Research Institutes (No. 20207508), Natural Science Foundation of the Jiangsu Higher Education Institutions of China (19KJB610011), Natural Science Foundation of Shandong Province (No. ZR2019PEE042), and Changzhou Sci&Tech Program (No. CJ20200046).
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Yang, Z., Niu, H., Yang, J. et al. Ruthenium on boron-doped graphene as a good-stability bifunctional electrocatalyst. Ionics 28, 361–368 (2022). https://doi.org/10.1007/s11581-021-04328-y
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DOI: https://doi.org/10.1007/s11581-021-04328-y