具对称电极结构的中温固体氧化物电解池电解水制氢技术

发布时间：2018-04-04 19:19

本文选题：电极　切入点：压力　出处：《农业工程学报》2017年09期

【摘要】：该文基于传统阳极-电解质-阴极结构的固体氧化物电解池,设计并研究了一种新型的具有对称电极结构的固体氧化物电解池。采用化学沉淀法制备了电解质材料Ce_(0.8)Sm_(0.2)O_(1.9)-Na_2CO_3(NSDC)以及选择与之兼容性良好的电极材料Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2-δ)(NCAL)。该文利用X射线衍射法与环境扫描电子显微镜对制备的材料进行了性能表征和分析,分析结果表明合成的NSDC粉体材料也为萤石型结构,其粒子大小范围约为30~80 nm。基于制备的电解质材料和电极材料,进一步制备了具有对称电极结构的固体氧化物电解池的单电池。电化学试验结果表明:在电解池模式,单电池具有良好的制氢性能。互换电极后,仍表现出良好的电化学性能。理论分析和试验结果充分说明,该电解池具有良好的结构对称性。为中温固体氧化物电解制氢技术与太阳能光热、光电技术耦合研究提供参考。
[Abstract]:A new type of solid oxide electrolytic cell with symmetrical electrode structure was designed and studied based on the traditional anode electrolyte cathode structure solid oxide electrolysis cell.The electrolyte material CeStuby 0.8Smstructure is prepared by means of chemical precipitation method. The electrolyte material CeStuby 0.2OStack-Na2CO3S / NSDCA is prepared, and the electrode material Nistav 0.8CoS 0.15 AlStat 0.05 is selected for the NCALI / NCALI / NCALT / NCALS / NCALS / NCAL5 / NCAL / NCAL / NCAL / NCAL / NCAL / NCAL5 / NCAL1.The properties of the synthesized NSDC powders were characterized and analyzed by X-ray diffraction and environmental scanning electron microscopy. The results show that the synthesized NSDC powders also have fluorite structure and the particle size ranges from 30 to 80 nm.Based on the electrolyte and electrode materials, the single cell of solid oxide electrolytic cell with symmetrical electrode structure was prepared.The electrochemical test results show that the single cell has good hydrogen production performance in the electrolytic cell mode.After the exchange of electrodes, good electrochemical performance is still shown.Theoretical analysis and experimental results show that the cell has good structural symmetry.It provides a reference for the coupling study of solid oxide electrolysis with solar photothermal and optoelectronic technology.
【作者单位】：东南大学能源与环境学院江苏省太阳能技术重点试验室;
【基金】：江苏省科技支撑计划项目(BE2013121)
【分类号】：TQ116.21

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