Crucial to enabling hydrous hydrazine as a viable fuel is the development of high-performance electrocatalysts. Herein, we report the synthesis of a palladium decorated porous nickel electrocatalyst using a combination of the dealloying and galvanic replacement methods. The obtained electrocatalyst shows outstanding catalytic activity and good long-term durability towards hydrazine oxidation. The mechanistic reason for the improved electrocatalytic performance is discussed based on the structural characterization and controlled experiments. Our study demonstrates that the electrocatalytic properties of catalyst can be improved by enhancing the number of active sites and its intrinsic activity.

使含水肼成为可行燃料的关键是开发高性能电催化剂。在本文中，我们报道了使用脱合金和电置换方法的组合合成钯装饰的多孔镍电催化剂。所得的电催化剂显示出优异的催化活性和对肼氧化的良好的长期耐久性。通过结构表征和受控实验，探讨了提高电催化性能的机理。我们的研究表明，可以通过增加活性位点的数量及其内在活性来改善催化剂的电催化性能。