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Nitrogen and sulfur co-doped porous carbon derived from human hair as highly efficient metal-free electrocatalysts for hydrogen evolution reactions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Liu, Xiaojun Zhou, Weijia Yang, Linjing Li, Ligui Zhang, Zhenyuan Ke, Yunting Chen, Shaowei |
| Copyright Year | 2015 |
| Abstract | Design and engineering of low-cost and high-efficiency electrocatalysts for hydrogen evolution reactions (HER) has attracted increasing interest in renewable energy research. Herein, a highly active and stable metal-free electrocatalyst, N and S co-doped porous carbon derived from human hair, was developed for HER for the first time, with an electrocatalytic performance comparable to that of state-of-the-art commercial 20 wt% Pt/C catalysts. SEM, TEM and nitrogen adsorption–desorption measurements showed that the resultant carbon exhibited a porous structure with a high specific surface area (up to 830.0 m2 g−1) and rich porosity. XPS measurements showed that N and S were co-doped into the carbon molecular skeletons. Importantly, electrochemical measurements showed high activity for hydrogen evolution with a low overpotential of only −12 mV, a Tafel slope of 57.4 mV dec−1, a current density of 10 mA cm−2 at −0.1 V vs. RHE, and remarkable durability. The results highlight a unique paradigm for the preparation of highly efficient electrocatalysts for HER based on abundant biowastes. |
| Starting Page | 8840 |
| Ending Page | 8846 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C5TA01209K |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c5/ta/c5ta01209k/c5ta01209k1.pdf |
| Alternate Webpage(s) | http://pubs.rsc.org/en/content/getauthorversionpdf/C5TA01209K |
| Alternate Webpage(s) | https://doi.org/10.1039/C5TA01209K |
| Volume Number | 3 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
