磷掺杂的NiMoO₄纳米带的制备及其电催化析氢性能研究  

Research on Preparation of Phosphorus-Doped NiMoO4 Nanoribbon and Its Electrocatalytic Hydrogen Evolution Performance

作　　者：张宇霖 秦天 杜妍妍 杨贝贝 葛存旺[1] 宾端 陆洪彬 

机构地区：[1]南通大学化学化工学院,江苏 南通

出　　处：《纳米技术》2022年第3期165-175,共11页Hans Journal of Nanotechnology

摘　　要：在当前能源短缺和环境污染下,氢能源作为一种极具潜在价值的新能源而广受关注,其中电解水析氢反应(HER)成为获得氢能源的一种有效途径。然而高效Pt、Ru等贵金属电催化剂储量低、成本高,限制了其大规模使用。基于此,本文以MoO3纳米带为基底,通过弱碱刻蚀和高温煅烧并通过P掺杂合成了一种具有分级纳米片管状结构的低成本高效非贵金属催化剂P-NiMoO4,得益于这种分级纳米结构和P的掺杂,该催化剂在酸性和碱性条件中均表现出良好的HER性能和循环稳定性。当电流密度为10 mA.cm−2时,在0.5 M H2SO4和1 M KOH下的过电位分别为133 mV和95 mV;在200 mA.cm−2处的过电位分别为322 mV和342 mV,甚至可以和商业的Pt/C催化剂相媲美。Under the current energy shortage and environmentalpollution, hydrogen energy is widely concernedas a new energy source with great potential value, among which hydrogenelectrolysis reaction (HER) has become an effective way to obtain hydrogenenergy. However, the low reserves and high costs of noble metal electrocatalysts such as high-efficiency Pt and Ru limittheir large-scale use. Based on this,a low-cost and efficient non-precious metal catalyst P-NiMoO4 with ahierarchical nanosheet-tubular structure was synthesized by weak alkali etchingand high-temperature calcination and doped by P. Thanks to this hierarchicalnanostructure and P doping, the catalyst exhibited good HER performance andcycling stability in both acidic and alkaline conditions. At a current density of10 mA∙cm−2, the overpotentials were 133 mV and 95 mV at 0.5 M H2SO4 and 1 M KOH, respectively, and 322 mV and 342 mV at 200 mA∙cm−2,respectively, which were even comparable to commercial Pt/C catalysts.

关 键 词：电解水 P-NiMoO₄ MoO₃纳米带 析氢反应 电催化剂 

分 类 号：O643.3[理学—物理化学]