铝对氮化钼膜电极性能的影响

The Effect of Aluminium on the Properties of Molybdenum Nitride Film Electrode

用循环伏安法、XRD、SEM等手段 ,研究了铝对氮化钼膜电极性能的影响 .结果表明 ,用浸渍 -煅烧法制备的氮化钼膜电极 ,浸渍液中添加剂 Al2 (SO4) 3.6H2 O的量对电极电化学性能有显著影响 ;当添加剂的量为最佳值时 ,电极比电容是未加添加剂时的 2 .6倍 ,工作电势拓宽了 0 .1 3 V.铝对γ-Mo2 N电极电化学性能的影响机制为 :在膜电极中大量的跨度在微米级的沟壑与孔径大于 2 nm的孔隙 ,使电解质溶液能充分润湿电极成膜物质的内表面 ;在膜电极中生成适量的 Al1 1 O1 5 N.

The effect of aluminium on the property of molybdenum nitride film electrode has been studied by cyclic voltammetry, XRD and SEM. The results show that the quantity of Al 2(SO 4) 3·6H 2O added strikingly influences the electrochemical behavior of the electrode prepared by dipping-calcination method. At optimum additive concentration in the dipping solution, the specific electric capacity of the electrode is 2 6 times that of the electrode prepared without additive in the dipping solution and the operating voltage value of the electrode increases by 0 13 V. The mechanism of aluminium affecting on the property of the film electrode is suggested that a lot of hole with size greater than 2 nm are formed in the film of the electrode, making the inner surface of the film wetted by the electrolyte solution and that there is an Al 11O 15N formed in the film of the electrode.