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本文系统总结分析了最新的电源技术——燃料电池的原理、特点与应用前景以及它的关键技术之一的多孔电极的研究情况;并介绍与制造这种高效气体扩散电极相关的特种粉末的研究与制备情况。 相似文献
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系统综述近年来铁钴镍三元合金在制备方法方面的研究进展,主要介绍机械合金化法、直流电弧等离子体法、电沉积法、模板法、还原法、溶胶凝胶-静电纺丝法、微乳液法、化学分解法和共沉淀-热分解法等,比较了各种制备方法的优缺点,并展望其未来研究的发展方向。 相似文献
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The influences of pyrolytic conditions, including temperature, time, the flow rate of air, and the heating rate, on the morphology, average size and specific surface area of the NiO particles were investigated, and the composition and morphologies of the products were characterized by using of XRD, SEM and BET. It is found that fibrous NiO particles were produced under the optimal conditions. A suitable range of pH for preparing dispersive precursors was chosen according to analysis of zeta potential. Based on the observations of NiO precursors growth and SEM morphology of the precursor, the oriented attachment was proposed for the well-aligned growth of the NiO precursor fibres. The final product NiO inherits the morphology of the precursor. 相似文献
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纤维状镍钴合金粉的制备 总被引:9,自引:0,他引:9
采用共沉淀热分解法制备了纤维状Ni Co合金固溶体粉末 ,讨论了反应机理 ,用XRD和SEM等分析手段对粉末形貌、组成进行了表征 ,分析了温度、浓度、表面活性剂对产率、前驱体粉末形貌、分散性等方面的影响 ,探讨了制备纤维状前驱体粉末的最佳工艺条件。结果表明 ,温度和浓度对沉淀率有一定影响 :温度升高 ,适当高的浓度及加入表面活性剂对前驱体粉末的形貌及分散性有较显著的影响。 相似文献
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