共查询到20条相似文献，搜索用时 78 毫秒
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染料敏化太阳能电池一般只在高校中研究.本文借鉴国内外相关的研究成果,从实际出发,在中学实验室进行染料敏化太阳能电池的制作和探索,取得了较好的实验结果 相似文献
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文章简要介绍了染料敏化纳米二氧化钛薄膜太阳能电池的基本结构、工作原理,并论述了研究现状、进展以及发展趋势和存在的问题. 相似文献
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分别用真空镀膜法、热分解法和电化学法制备了铂金修饰导电玻璃,并以此作为光阴极组装了染料敏化纳晶TiO2太阳能电池.用SEM观察了铂金修饰导电玻璃表面形貌,发现用真空镀膜法制备的铂金膜结构缺陷多、不均匀,存在较多的污点.用热分解法制备的铂金膜具有多孔状结构,但存在较多的有机物分解的残留物.用电镀法制备的铂金膜结构均匀、排列规则、缺陷少、污染少.测定了所制备铂金膜的电阻,结果表明由电镀法所制得的铂金膜电阻最小,用热解法和真空镀膜法制得的铂金膜电阻较大.测定了DSSC电池的光电性能,发现用电镀法制得的铂金膜的催化性能最好,大大提高了DSSC电池的性能;其次是热分解法,由真空镀膜法制备的铂金膜对电池的性能没有多大改善. 相似文献
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本刊 《实验室研究与探索》2019,(2):282-283
<正>随着能源矛盾的日益显现,寻找清洁、可持续的能源成为世界性课题。中国作为全球最大的太阳能电池生产国和需求国,正在发挥越来越重要的作用。染料敏化太阳电池属于下一代光伏技术,作为色彩绚丽的透明电板在产业化方面已崭露头角。去除电解质中的挥发性组分并保证高效率和耐久性是获得户外器件长期应用的先决条件。近日,浙江大学化学系王鹏教授课题组与瑞士联邦理工学院Michael Gratzel教授课题组合作,在光热稳定的染料敏化太阳能电池研究方面取得了重要 相似文献
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讨论了TiO2 纳米管的制备方法、形成机理及其特性的关系,制备方法不同时,其形成机理、结构特点以及其物理化学性能有很大的差异.着重综述了TiO2 纳米管的光电特性、影响因素及作为光电极应用于染料敏化太阳电池最新研究进展,并对TiO2纳米管用于光电致变色器件阳极、界面特性等领域的研究及应用进行展望. 相似文献
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设计了一种新型金属-有机骨架材料(MOF)膜制备方法，以ZnO晶种液为基础，通过溶剂热生长得到ZnO阵列晶种层，然后采用二次生长法得到了致密ZIF-8膜。采用XRD、TF-IR和SEM对材料进行了表征，并对膜的水处理性能进行了测试。结果表明，ZIF-8膜中ZIF-8晶型完整；ZIF-8的特征峰与其结构中的化学键相吻合；ZnO晶种在基底上以垂直阵列形态分布，ZIF-8晶体颗粒间具有良好的连续致密性，ZIF-8膜层的厚度约为5μm。在染料水的分离中，膜具有较高的水通量[367.0L/(m2·h·MPa)]和优异的截留性能，对甲基橙、酸性橙、甲基蓝和刚果红的截留率分别为97.0%、99.6%、100.0%和100.0%。 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献