LiNiCuZnO的制备及其在低温固体氧化物燃料电池的应用
发布时间：2019-06-14 10:52
【摘要】：化石能源的使用,随之带来了能源危机和环境污染两大问题。为了应对这些问题,开发更加清洁、高效的新型能源产生与转化系统成为一种重要且具有潜力的应对措施。固体氧化物燃料电池(SOFC),尤其是低温固体氧化物燃料电池(LTSOFC)作为一种清洁、高效、灵活和低噪音的能量转换装置,不论是在科研领域还是市场应用方面,都受到全世界越来越多专家学者和政府机构的重视和研究。本论文围绕过渡金属氧化物Li Ni Cu Zn O(LNCZ)及其在低温固体氧化物燃料电池的应用,尤其是新型无电解质单部件燃料电池的应用展开了一系列的研究。在以铈基碳酸盐复合电解质为离子导体相的基础上,本论文使用双模板法,溶胶-凝胶法和固相反应法三种方法制备了LNCZ,研究了卤虫卵壳用量、LNCZ前驱体煅烧温度、LNCZ与离子导体的质量比等参数对产品LNCZ形貌、物相和燃料电池性能的影响。研究发现：作为硬模板,当卤虫卵壳的用量达到金属硝酸盐质量的20%时,其在多级孔道LNCZ的制备过程中能够起到结构导向的作用。当多级孔道LNCZ分别应用于三部件对称燃料电池和无电解质单部件电池时,电池的峰值功率密度分别为132 m W/cm2和155 m W/cm2。溶胶凝胶法制备LNCZ的工艺中,当LNCZ的煅烧温度为500°C时,无电解质单部件燃料电池的峰值功率最大,达到785 m W/cm2。另外,整流特性曲线证明了单部件燃料电池器件中体异质结的存在,验证了单部件燃料电池是一个联合物理结和电化学原理的装置。固相反应法制备的LNCZ,当其煅烧温度为700°C,LNCZ与NSDC两相的质量比为30:70时,单部件电池的峰值功率密度最大,可达1045 m W/cm2。
[Abstract]:The use of fossil energy has brought about two major problems: energy crisis and environmental pollution. In order to deal with these problems, the development of cleaner and more efficient new energy generation and transformation system has become an important and potential response. Solid oxide fuel cell (SOFC), especially low temperature solid oxide fuel cell (LTSOFC), as a clean, efficient, flexible and low noise energy conversion device, has been paid more and more attention and research by more and more experts, scholars and government agencies in the field of scientific research and market application. In this paper, a series of studies have been carried out on transition metal oxide Li Ni Cu Zn O (LNCZ) and its application in low temperature solid oxide fuel cells, especially the new electrolyte free single component fuel cells. On the basis of using cerium based carbonate composite electrolyte as ion conductor phase, LNCZ, was prepared by double template method, sol-gel method and solid phase reaction method. The effects of the amount of Artemia egg shell, calcination temperature of LNCZ precursor and mass ratio of LNCZ to ion conductor on the morphology, phase and fuel cell performance of the product were studied. It is found that as a hard template, when the amount of Artemia egg shell reaches 20% of the mass of metal nitrate, it can play a structure-oriented role in the preparation of multistage pore LNCZ. When multistage channel LNCZ is used in three-component symmetrical fuel cell and electrolyte-free single-component cell, the peak power density of the cell is 132 m W/cm2 and 155 MW 鈮，
本文编号：2499336
[Abstract]:The use of fossil energy has brought about two major problems: energy crisis and environmental pollution. In order to deal with these problems, the development of cleaner and more efficient new energy generation and transformation system has become an important and potential response. Solid oxide fuel cell (SOFC), especially low temperature solid oxide fuel cell (LTSOFC), as a clean, efficient, flexible and low noise energy conversion device, has been paid more and more attention and research by more and more experts, scholars and government agencies in the field of scientific research and market application. In this paper, a series of studies have been carried out on transition metal oxide Li Ni Cu Zn O (LNCZ) and its application in low temperature solid oxide fuel cells, especially the new electrolyte free single component fuel cells. On the basis of using cerium based carbonate composite electrolyte as ion conductor phase, LNCZ, was prepared by double template method, sol-gel method and solid phase reaction method. The effects of the amount of Artemia egg shell, calcination temperature of LNCZ precursor and mass ratio of LNCZ to ion conductor on the morphology, phase and fuel cell performance of the product were studied. It is found that as a hard template, when the amount of Artemia egg shell reaches 20% of the mass of metal nitrate, it can play a structure-oriented role in the preparation of multistage pore LNCZ. When multistage channel LNCZ is used in three-component symmetrical fuel cell and electrolyte-free single-component cell, the peak power density of the cell is 132 m W/cm2 and 155 MW 鈮，
本文编号：2499336
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