Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Center for Chemistry of High-Performance and Novel Matrials, Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University , Hangzhou 310028, P. R. China.
J Am Chem Soc. 2015 Dec 23;137(50):15753-9. doi: 10.1021/jacs.5b07924. Epub 2015 Dec 15.
Despite being promising substitutes for noble metal catalysts used in hydrogen evolution reaction (HER), the nonprecious metal catalysts (NPMCs) based on inexpensive and earth-abundant 3d transition metals (TMs) are still practically unfeasible due mainly to unsatisfactory activity and durability. Herein, a highly active and stable catalyst for HER has been developed on the basis of molybdenum-carbide-modified N-doped carbon vesicle encapsulating Ni nanoparticles (MoxC-Ni@NCV). This MoxC-Ni@NCV material was synthesized simply by the solid-state thermolysis of melamine-related composites of oxalate and molybdate with uniform Ni ions doping (Ni@MOM-com). Notably, the prepared MoxC-Ni@NCV was almost the most efficient NPMCs for HER in acidic electrolyte to date. Besides good long-term stability, MoxC-Ni@NCV exhibited a quiet low overpotential that was comparable to Pt/C. Thus, this work opens a new avenue toward the development of highly efficient, inexpensive HER catalysts.
尽管作为贵金属催化剂在析氢反应（HER）中的替代品很有前景，但基于廉价且丰富的 3d 过渡金属（TMs）的非贵金属催化剂（NPMCs）由于活性和耐久性不理想，实际上仍不可行。在此基础上，我们开发了一种基于碳化钼修饰的氮掺杂碳囊泡封装镍纳米颗粒（MoxC-Ni@NCV）的高效稳定的 HER 催化剂。该 MoxC-Ni@NCV 材料是通过草酸盐和钼酸盐与均匀掺杂镍离子的三聚氰胺相关复合材料的固态热解合成的（Ni@MOM-com）。值得注意的是，所制备的 MoxC-Ni@NCV 是迄今为止在酸性电解质中用于 HER 的最有效的 NPMCs 之一。除了良好的长期稳定性外，MoxC-Ni@NCV 还表现出相当低的过电势，可与 Pt/C 相媲美。因此，这项工作为开发高效、廉价的 HER 催化剂开辟了一条新途径。
