摘要
在0.5%(质量分数,下同)NH4F和1 mol/L (NH4)2SO4混合溶液中进行电化学脱合金Zr56Al16Co28非晶合金,制备出纳米多孔Co。这种纳米多孔Co具有良好的超级电容器性能,其比电容在2 A/g的电流密度下能达318 F/g;同时,纳米多孔Co在方波电位下对直接蓝6和酸性橙II等偶氮染料具有优异的降解能力,降解效率均高于96%,其单位质量纳米多孔Co电极材料的降解能力是等质量Zr56Al16Co28非晶合金的3.5倍。
Nano-porous Co was prepared by electrochemically dealloying of Zr56Al16Co28amorphous alloy in 0.5%(mass fraction) NH4F and 1 mol/L (NH4)2SO4mixed solution.Nano-porous Co has the bicontinuous porous structure with large specific surface area and fast charge transfer ability.The prepared nano-porous Co exhibits good performance in many aspects:firstly,it delivers a high specific capacitance of318 F/g at 2 A/g,suggesting its good performance as supercapacitor electrode;secondly,it exhibits degradation efficiencies under square wave potential as high as 96%for Direct Blue 6 and Acid Orange II respectively.The degradation ability of nano-porous Co electrode per unit mass is 3.5 times higher than that of Zr56Al16Co28amorphous alloy electrode.
作者
陈峰
周洋
陈彦南
林宗领
秦凤香
CHEN Feng;ZHOU Yang;CHEN Yannan;LIN Zongling;QIN Fengxiang(School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2020年第12期905-914,共10页
Chinese Journal of Materials Research
基金
国家自然科学基金(51671106)
江苏省自然科学基金(BK20171424)。
关键词
金属材料
纳米多孔钴
脱合金
超级电容器
降解
metallic materials
nanoporous Co
dealloying
supercapacitor
degradation
