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Hierarchical Fe-doped Ni3Se4 ultrathin nanosheets as an efficient electrocatalyst for oxygen evolution reaction.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Du, Jing Zou, Zehua Liu, Chen Xu, Cailing |
| Copyright Year | 2018 |
| Abstract | Developing highly efficient oxygen evolution reaction (OER) electrocatalysts is critical to the cost-effective generation of clean fuels. Transition-metal selenides have been proposed to be OER catalyst alternatives to noble metal based catalysts, but generally exhibit limited electrocatalytic activity. We here report hierarchical Fe-doped Ni3Se4 ((Ni,Fe)3Se4) ultrathin nanosheets as an efficient electrocatalyst for OER in alkaline electrolytes. The preparation involves a solvothermal synthesis and a topotactic conversion process. The prepared hierarchical (Ni,Fe)3Se4 ultrathin nanosheets show abundant and accessible catalytically active sites, facile charge transfer and a high specific surface area. Relative to the Ni3Se4 nanosheets, the as-prepared (Ni,Fe)3Se4 ultrathin nanosheets show a higher current density and a lower Tafel slope towards the OER. Remarkably, hierarchical (Ni,Fe)3Se4 ultrathin nanosheets supported on Ni foam exhibit an electrocatalytic OER with a current density of 10 mA cm-2 at a low overpotential of 225 mV and a small Tafel slope of about 41 mV dec-1. This study establishes (Ni,Fe)3Se4 ultrathin nanosheets as an efficient electrocatalyst for the OER that can be used in the fields of metal-air batteries and water splitting for hydrogen production. |
| Starting Page | 5163 |
| Ending Page | 5170 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c8nr00426a |
| PubMed reference number | 29492488 |
| Journal | Medline |
| Volume Number | 10 |
| Issue Number | 11 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c8/nr/c8nr00426a/c8nr00426a1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/c8nr00426a |
| Journal | Nanoscale |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
