| Na_xWO_3与Na_xWO_3／Pt晶体电极电催化氧还原性能 |
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| 引用本文： | 黄欢,杨松青.Na_xWO_3与Na_xWO_3／Pt晶体电极电催化氧还原性能[J].中南大学学报(自然科学版),1996(1). |
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| 作者姓名： | 黄欢 杨松青 |
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| 作者单位： | 中南工业大学冶金物理化学与化学新材料研究所 |
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| 基金项目： | 国家教委博士点科研基金 |
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| 摘 要： | 采用循环伏安法与稳态恒电流法，对钠钨青铜（ＮａｘＷＯ３）晶体电极及含铂的钠钨青铜（ＮａｘＷＯ３／Ｐｔ）晶体电极在酸性介质中（０．０５ｍｏｌ／ＬＨ２ＳＯ４）的电催化氧还原性能进行了研究．实验结果表明，两者对氧阴极还原过程都有电催化作用，且后者明显强于前者，但均弱于金属铂（Ｐｔ）电极．作者还提出了ＮａｘＷＯ３及ＮａｘＷＯ３／Ｐｔ对氧还原反应可能的催化机理，认为高度分散状态的Ｐｔ提高了ＮａｘＷＯ３的催化能力．
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| 关 键 词： | 电催化，Na_xWO_3，Na_xWO_3／Pt，氧电极 |
ELECTROCATALYTIC REDUCTION OF OXYGEN BY PURE AND Pt-DOPED SODIUM TUNGSTEN BRONZE CRYSTALS |
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| Huang Huan ,Yang Songqing.ELECTROCATALYTIC REDUCTION OF OXYGEN BY PURE AND Pt-DOPED SODIUM TUNGSTEN BRONZE CRYSTALS[J].Journal of Central South University:Science and Technology,1996(1). |
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| Authors: | Huang Huan Yang Songqing |
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| Abstract: | The catalytic activity of pure sodium tungsten bronze (NaxWO3) and Pt-doped sodium tungsten bronze (NaxWO3/Pt) crystals for cathodic oxygen reduction was studied in acidic solution (0. 05 mol/L H2SO4). Experimental results reveal that NaxWO3 and NaxWO3/Pt have an electrocatalytic effect on oxygen reduction, and the later is much more active than the former, but both are less than Pt electrode. Moreover, a mechanism for oxygen reduction by NaxWO3 and NaxWO3/Pt is proposed, and it is concluded that highly dispersive platinum in crystal will improve the electrocatalytic activity. |
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| Keywords: | electrocatalysis Na_xWO_3 Na_xWO_3/Pt oxygen electrodes |
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