Two-dimensional (2D) materials are used in energy storage and conversion due to their unique electronic structure and large specific area. In this work, 2D vanadium carbide (V₂CT_x MXene) is fabricated and studied as an efficient and earth-abundant electrocatalyst for electrocatalytic N₂ reduction reaction (NRR). When tested in 0.1 M Na₂SO₄, such electrocatalyst achieves a large NH₃ yield rate of 12.6 μg h^–1 mg^–1_cat. and a Faradaic efficiency of 4% at –0.7 V vs. reversible hydrogen electrode. Theoretical calculations show a low reaction barrier of 0.88 eV in the distal route for this catalyst.

Graphic Abstract

中文翻译：

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2D碳化钒（MXene）在环境条件下电化学合成氨

二维（2D）材料由于其独特的电子结构和较大的比表面积而用于能量存储和转换。在这项工作中，制备并研究了二维碳化钒（V ₂ CT _x MXene）作为一种高效且富于地球的电催化剂，用于电催化N ₂还原反应（NRR）。当在0.1 M Na ₂ SO _4中进行测试时，这种电催化剂的NH ₃产率很高，为12.6μgh ^–1  mg ^–1 _cat。相对于可逆氢电极，在–0.7 V时法拉第效率为4％。理论计算表明，该催化剂在远端途径中的反应势垒较低，为0.88 eV。

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