Facile synthesis of cobalt modified 2D titanium carbide with enhanced hydrogen evolution performance in alkaline media
| Autor: | Rong Huang, Hui Peng, Chunhua Luo, Ruijuan Qi, Ruixiang Li, Mengqin Liu, Chunli Jiang, Rong Luo, Hechun Lin |
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| Rok vydání: | 2021 |
| Předmět: |
Titanium carbide
Materials science Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element Sulfuric acid engineering.material Overpotential Condensed Matter Physics chemistry.chemical_compound Fuel Technology chemistry Chemical engineering Transition metal engineering Noble metal Molten salt MXenes Cobalt |
| Zdroj: | International Journal of Hydrogen Energy. 46:32536-32545 |
| ISSN: | 0360-3199 |
| Popis: | 2D transition metal carbides, nitrides and carbonitrides, namely the MXenes, attract more and more attentions due to their unique properties. Here, we report a simple one-step molten salt etching method to prepare Co modified MXene hybrid (Ti3C2Tx:Co) by the reaction of Ti3AlC2 with Lewis acid CoCl2 at 750 °C. Most of Co atoms aggregates in the interlayered space of Ti3C2Tx. Benefitting from the improved electron charge transfer efficiency and increased active sites, the sulfuric acid treated Ti3C2Tx:Co-12h hybrid exhibits excellent electrocatalytical activity for hydrogen evolution reaction in alkaline media, delivering a current density of 10 mA cm−2 at an overpotential of 103.6 mV, which is lower than most noble metal free MXene based electrocatalysts. The results illustrate that the proposed method is very facile and useful to incorporate mid-to-late transition metals into the MXene phase to prepare MXene based HER electrocatalysts. |
| Databáze: | OpenAIRE |
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