天津工业大学学报2017，Vol.36Issue(6)：45-49,5.DOI:10.3969/j.issn.1671-024x.2017.06.009
具有高产氢反应催化活性的纳米多孔Ni基合金电极
Nanoporous Ni-based alloy electrodes with high catalytic activity for hydrogen evolution reaction
摘要
Abstract
To prepare nanoporous Ni-based alloy electrodes with high catalytic activity for hydrogen evolution reaction for water splitting in alkaline electrolytes, four kinds of Ni-based alloys such as Ni, NiCo, NiCu and NiFe were prepared firstly. Based on NiCu and NiCo alloy system, nanoporous NiCu and NiCo alloys have been prepared by dealloying. The crystal structure, the morphology structure and the electrochemical performance of Ni-based alloys were characterized by XRD, BET, TEM and LSV. The results show that Ni-based alloys are single-phase solid solutions with face-centered cubic crystal structure and the nanoporous NiCo alloy shows homogeneously porous structure and the pore size is among of 3-6 nm. Compared with the original Ni-based alloys, the potential and Tafel slope of nanoporous NiCu and NiCo alloys reduce dramatically, while the catalytic activity enhances apparently. The low potential of nanoporous NiCo alloy is 140 mV at the current density of 20 mA/cm2 and Tafel slope is 60 mV/dec, which is close to that of Pt. Therefore, choosing synergistic doping elements and construct-ing a nanoporous structure are effective ways to enhance the catalytic activity of Ni-based alloy electrodes for hy-drogen evolution reaction.关键词
纳米多孔Ni基合金/碱性电解水/产氢反应/催化活性/电化学性能Key words
nanoporous Ni-based alloy/water splitting in alkaline electrolytes/hydrogen evolution reaction/catalytic ac-tivity/electrochemical performance分类
化学化工引用本文复制引用
康建立,李一飞..具有高产氢反应催化活性的纳米多孔Ni基合金电极[J].天津工业大学学报,2017,36(6):45-49,5.基金项目
天津市新材料科技重大专项基金资助项目(16ZXCLGX0007 （）
16ZXCLGX00110) （）
