Journal
RSC ADVANCES
Volume 8, Issue 35, Pages 19635-19641Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra02040j
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Funding
- National Natural Science Foundation of China [21671129, 51662004, 11764011, 11364010]
- Natural Science Foundation of Guangxi Province, P. R. China [2016GXNSFAA380008]
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In this study, a novel and simple hydrothermal method was developed to synthesize sulfur-doped graphene quantum dots (S-GQDs) with a diameter of 1-6 nm and S-GQD/reduced graphene oxide hybrids. The results indicated that an increase in the sulfur content led to superior ORR electrocatalytic activity. Moreover, it is found that thiophene S plays a significant role in the electrocatalytic activity. In addition, the average electron transfer number depends on the content of thiophene S. It is believed that the proposed synthesis strategy is a general and effective method for designing high-performance metal-free electrocatalytic materials.
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