1] Laboratory for Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, P.R. China [2] Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China.
Laboratory for Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, P.R. China.
Nat Commun. 2015 Mar 2;6:6430. doi: 10.1038/ncomms7430.
Design and synthesis of effective electrocatalysts for hydrogen evolution reaction in alkaline environments is critical to reduce energy losses in alkaline water electrolysis. Here we report a hybrid nanomaterial comprising of one-dimensional ultrathin platinum nanowires grown on two-dimensional single-layered nickel hydroxide. Judicious surface chemistry to generate the fully exfoliated nickel hydroxide single layers is explored to be the key for controllable growth of ultrathin platinum nanowires with diameters of about 1.8 nm. Impressively, this hybrid nanomaterial exhibits superior electrocatalytic activity for hydrogen evolution reaction in alkaline solution, which outperforms currently reported catalysts, and the obviously improved catalytic stability. We believe that this work may lead towards the development of single-layered metal hydroxide-based hybrid materials for applications in catalysis and energy conversion.
在碱性环境中设计和合成有效的析氢反应电催化剂对于降低碱性水电解的能量损失至关重要。在这里，我们报告了一种由一维超薄铂纳米线生长在二维单层氢氧化镍上的混合纳米材料。我们探索了合理的表面化学方法来生成完全剥离的氢氧化镍单层，这是可控生长直径约为 1.8nm 的超薄铂纳米线的关键。令人印象深刻的是，这种混合纳米材料在碱性溶液中表现出优异的析氢反应电催化活性，优于目前报道的催化剂，且催化稳定性明显提高。我们相信这项工作可能会推动基于单层金属氢氧化物的混合材料在催化和能量转换中的应用。
