毕业论文移动版

摘要随着社会发展，能源需求已经越来越大，化石类能源已经成为人类的主要能量来源 数百年，至今仍占据着这个领域的大头，然而，这种传统能源已经开始渐渐落伍了。

无电解质燃料电池（EFFC），保留与传统固体氧化物燃料电池（SOFC）相似的功 能，但具有完全不同的结构，近些年来已备受关注。79365

在此，我们试图开发更好的无电解质燃料电池，本论文在 EFCC 中尝试了 MgZnO、 LiNiCuSrO、SDC 混合材料的无电解质固体氧化物燃料电池，该复合材料的微观结构和 形态特征经过了 X 射线衍射（XRD），扫描电子显微镜（SEM）和能量色散 X 射线光 谱仪（EDS）的分析。这些测试进一步分析了这种无电解质燃料电池的性能。

SDC 由溶胶凝胶法制备，LNCS 和 MZO 材料则是直接固相反应合成。 锌和镁离子在单燃料电池导体中的引入，使其在具备良好的输出性能的同时也降低

整体成本。引入锶则是为了提高导电性和操作稳定性，同时填隙氧化物量的加大也会引 起电子空穴的增多，这将使得 EFFC 电池性能更加优异。MZSDC 是氧离子导体，而金 属氧化物（NiO 和 CuO）已经展现出对氢氧化反应和氧还原反应的高催化活性。Li+掺 杂的 NiO 是众所周知的 p 型半导体，而 CuO 是 n 型半导体。当暴露于 H 2/O 2 气氛中时， LNCS 内能形成阻断 EFFC 内部的电子传导的 PN 结来保持有效的电荷分离。因此，所 制备的 MZSDC-LNCS 可以满足 EFFC 材料商业化需求的所有性能。

毕业论文本文的实验旨在为 EFFC 开发了一种新的，更适用于商业用途的功能性纳米复合材 料。

Abstract With the social development, energy demand has been growing, fossil energy has become the main source of energy for humans for hundreds of years, still occupy the bulk of the field, however, the traditional energy has begun to gradually become obsolete。

Electrolyte–free fuel cell (EFFC) which holds the similar function with the traditional solid oxide fuel cell (SOFC) but possesses a completely different structure, has draw  much attention during these years。

Herein, we attempt to develop better electrolyte–free fuel cell。 This paper trys MgZnO, LiNiCuSrO, SDC mixed materials in the EFCC preparing , the microstructure and morphology of the composite materials are characterized by X–ray diffraction (XRD), scanning electron microscope (SEM) and energy–dispersive X–ray spectrometer (EDS)。 These tests further analyzed the performance of this kind of electrolyte–free fuel cell。

The SDC is synthesized by a sol–Gel method。 Material MZO and LNCS is synthe–sized by direct solid state reaction。

Zn and Mg were introduced into the ionic conductor part in single fuel cell  which can maintain the good output performance and reduce the overall cost of the fuel cell simultaneously。 The introduction of Sr can increase the electrical conductivity, improve the operational stability and lead to good cell performance for EFFC due to the greater amount of electronic holes originated from the increased interstitial oxygen species。 MZSDC is an oxygen ionic conductor, while the metal oxides (NiO and CuO) have shown high catalytic activity for both hydrogen oxidation reaction and oxygen reduction reaction。 It is well known that Liþ doped NiO is a p-type semiconductor, while CuO is an n-type semiconductor。 Thus a pen junction may be formed within LNCS to keep an effective charge separation to block the internal electronic conduction in EFFC when exposed to H2 and/ or O2 atmosphere。 Therefore,

the as-prepared MZSDC－LNCS can satisfy the material requirement for EFFC which has the

potential for commercialization。

This paper develops a new functional nano–composite for EFFC which is conducive to its commercial use。 (责任编辑：qin)