The fabrication of mesoporous bimetallic alloys has attracted significant attention in recent years due to their higher catalytic activity and stability compared to monometallic mesoporous metals. In this work, we have utilized the soft-templated electrochemical deposition procedure by electrochemically reducing Au and Ni precursors in the presence of block copolymer micelles to form mesoporous bimetallic Au-Ni films at the appropriate applied potential. The as-prepared mesoporous Au-Ni films exhibit uniform mesopores throughout the entirety of the films without any visible cracks and good distribution of the composing elements. The Au and Ni contents in the mesoporous Au-Ni films can be conveniently controlled by adjusting the compositions of the Au and Ni precursors in the initial precursor solution, respectively. When employed as electrocatalysts for MOR, the mesoporous bimetallic Au-Ni films exhibit significantly enhanced electrocatalytic activity compared to the pure mesoporous Au film due to the synergistic effects arising from the multimetallic component and improved accessibility to the active sites as a result of the mesostructure. These findings highlight the promising potential of the as-prepared mesoporous bimetallic Au-Ni films for practical applications in direct methanol fuel cells (DMFCs).

介孔双金属合金的制造由于与单金属介孔金属相比具有更高的催化活性和稳定性而在近年来引起了极大的关注。在这项工作中，我们通过在嵌段共聚物胶束的存在下电化学还原Au和Ni前驱体，以适当的施加电势形成介孔双金属Au-Ni膜，利用了软模板电化学沉积程序。所制备的中孔Au-Ni膜在整个膜中显示出均匀的中孔，而没有任何可见的裂纹和组成元素的良好分布。通过分别调节初始前体溶液中Au和Ni前体的组成，可以方便地控制中孔Au-Ni膜中Au和Ni的含量。当用作MOR的电催化剂时，由于多金属组分产生的协同效应，介孔双金属Au-Ni膜与纯介孔Au膜相比具有显着增强的电催化活性，并且介孔结构改善了对活性位的可及性。这些发现突出表明了所制备的介孔双金属Au-Ni膜在直接甲醇燃料电池（DMFC）中的实际应用中具有广阔的前景。