Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 4, Issue 33, Pages 12878-12883Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta04426c
Keywords
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Funding
- National Key Basic Research Program of China [2013CB934104]
- National Science Foundation of China [21322311, 21473038]
- Science and Technology Commission of Shanghai Municipality [14JC1490500]
- Collaborative Innovation Center of Chemistry for Energy Materials [2011-iChem]
- International Scientific Partnership Program ISPP at King Saud University [0017]
- National Science and Technology Major Project [2011ZX02707]
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A homologous, metal-free electrolyzer in both acidic and alkaline media was developed, consisting of self-supported carbon nitride/carbon nanotube/carbon fiber (C3N4-CNT-CF) and sulfur-doped carbon nitride/carbon nanotube/carbon fiber (S-C3N4-CNT-CF) as oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) catalysts, respectively. The self-supported C3N4-CNT-CF electrode was proven to be an effective catalyst for the OER, due to the high N content of carbon nitride sheets and enhanced charge transport ability by the synergistic effect between the well-designed three-dimensional hierarchical carbon network and layered carbon nitride. In the meantime, the S-C3N4-CNT-CF was also proven to be an efficient, stable metal-free electrode for the HER. The homologous C-3-N-4-CNT-CF parallel to S-C3N4-CNT-CF water splitting system presents low onset potential and good stability in both acidic and alkaline media, indicating a potential carbon-based, metal-free full water splitting electrolyzer with low cost.
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