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Sulfur-doped graphene as a potential alternative metal-free electrocatalyst and Pt-catalyst supporting material for oxygen reduction reaction
Abstract
In this study, sulfur-doped graphene (S-graphene) was synthesized by thermal treatment of exfoliated graphene under CS2 gas flow. Its electrocatalytic activity as a metal-free catalyst was evaluated and compared with other doped-graphenes and commercial platinum nanoparticles loaded on carbon black (Pt/C) catalysts for oxygen reduction reaction (ORR) in fuel cell cathodes. The resultant S-graphene was shown to act as a viable catalyst for ORR and its limiting current density and durability were improved compared to those of the commercial Pt/C catalyst. The current density at -1.0 V for the commercial Pt/C catalyst, pristine graphene, nitrogen-doped graphene (N-graphene) and S-graphene was 4.7, 0.15, 6.26 and 6.99 mA cm(-2), respectively. The durability of S-graphene (70.3%) was much better compared to commercial Pt/C (37.2%) and N-graphene (67.9%). When S-graphene was used as a supporting material for Pt nanoparticles, its catalytic performance was significantly higher than other Pt catalysts supported on different doped graphenes. Here, we demonstrate that S-graphene can be used as a novel graphene-based efficient metal-free ORR catalyst in fuel cells.
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Cited by
Metal-Free Catalysts for Oxygen Reduction Reaction
Dai, L., Xue, Y., Qu, L., Choi, H.-J., & Baek, J.-B. (2015) · Chemical Reviews · doi:10.1021/cr5003563 · Cited by 2,380
Tuning the MoS 2 Edge-Site Activity for Hydrogen Evolution via Support Interactions
Tsai, C., Abild-Pedersen, F., & Nørskov, J. K. (2014) · Nano Letters · doi:10.1021/nl404444k · Cited by 760
Defect Engineering and Surface Functionalization of Nanocarbons for Metal‐Free Catalysis
Ortiz‐Medina, J., Wang, Z., Cruz‐Silva, R., Morelos‐Gomez, A., Wang, F., Yao, X., Terrones, M., & Endo, M. (2019) · Advanced Materials · doi:10.1002/adma.201805717 · Cited by 245
Gao, Y., Zhao, H., Chen, D., Chen, C., & Ciucci, F. (2015) · Carbon · doi:10.1016/j.carbon.2015.07.084 · Cited by 79
Metadata
- Authors
- Park, J.-E., Jang, Y. J., Kim, Y. J., Song, M.-S., Yoon, S., Kim, D. H., & Kim, S.-J.
- Venue
- Phys. Chem. Chem. Phys.
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2014
- Volume
- 16
- Issue
- 1
- Pages
- 103-109
- ISSN
- 1463-9076 (ISSN-L)
- 1463-9084
- OpenAlex
- W2153119384
- Cited by
- 228
- References
- 0
- FWCI
- 9.26
- Type
- journal article
- Language
- en
- Open access
- closed
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- Park, J.-E., Jang, Y. J., Kim, Y. J., Song, M.-S., Yoon, S., Kim, D. H., & Kim, S.-J. (2014). Sulfur-doped graphene as a potential alternative metal-free electrocatalyst and Pt-catalyst supporting material for oxygen reduction reaction. Phys. Chem. Chem. Phys. https://doi.org/10.1039/c3cp54311k
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