摘要
以六水合氯化铝、尿素和泡沫镍为原料,通过简单的一步水热法在泡沫镍上原位生成了NiAl-LDH纳米片(命名为NiAl-LDH/NF).首先探讨了不同铝源加入量对样品的形貌与性能的影响,获得最佳NiAl-LDH/NF,然后通过X射线衍射仪、显微共焦拉曼光谱仪、扫描电子显微镜与透射电子显微镜对最佳样品的组成、形貌以及微观结构等进行表征分析.电催化测试表明,在中性和碱性条件下,最优化的NiAl-LDH/NF电极在10 mA/cm^2时的过电势分别仅为189 mV和140 mV,且均能进行90 h的稳定工作.
Using AlCl3·6H2O,urea and nickel foam as raw materials,NiAl-LDH nanosheets in situ grown on nickel foam(denoted as NiAl-LDH/NF)were synthesized via a facile one-pot hydrothermal method.First,the optimal NiAl-LDH/NF sample was obtained by investigating the effect of different addition amounts of Al source in the morphology and catalytic performance of catalysts.X-ray diffractometer,microscopic confocal laser Raman spectrometer,scanning electron microscopy and transmission electron microscopy were conducted to characterize and analyze the composition,morphology and microstructure of NiAl-LDH/NF.The electrocatalytic results show that the optimized NiAl-LDH/NF electrode only needs low overpotentials of 189 mV and 140 mV at 10 mA/cm^2 in alkaline and neutral conditions,respectively,and can maintain long-term catalytic stability for at least 90 h.
作者
冯亮亮
杜盈盈
黄剑锋
曹丽云
FENG Liang-liang;DU Ying-ying;HUANG Jian-feng;CAO Li-yun(School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi′an 710021, China)
出处
《陕西科技大学学报》
CAS
2020年第2期123-129,共7页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(21701107)
陕西省科技厅自然科学基金项目(2019JQ-018)
陕西科技大学博士科研启动基金项目(2016QNBT-07)。
关键词
电催化
水分解
双金属氢氧化物
产氢反应
electrocatalyst
water splitting
layer double hydroxides
hydrogen evolution reaction
