| Behind the rapid development of the construction industry,there are serious issues of energy consumption and carbon emissions,which have caused a certain degree of damage to the natural ecological environment.The resulting energy depletion and greenhouse effect are the two major crises facing the world.In the new situation of economic development,China has increasingly taken measures to reduce emissions,reduce consumption,and protect the environment,especially for high energy and carbon emission industries such as transportation,manufacturing,and construction,striving to establish a harmonious,green,and environmentally friendly energy-saving society.Solid oxide energy storage cells are an energy conversion device that can convert greenhouse gas resources into fuel,playing a crucial role in emission reduction and consumption reduction.This article is based on solid oxide energy storage batteries.By optimizing key electrode components,the energy conversion performance of energy storage cells is improved,and more valuable energy gases CO and H2 are obtained for humanity.This reduces the impact of greenhouse effect and alleviates the current situation of high energy consumption and tight energy supply in the construction industry.The first work of this experiment is to prepare a series of perovskite oxides La0.6Sr0.4Co1-xFexO3-δ(LSC1-xFx,x=0-1)as a key electrode component of energy storage cells,is analyzed for its characteristics and feasibility in energy conversion through rigorous characterization techniques.The performance of energy storage cells in converting CO2 to energy CO is improved through the use of synergistic doping to create vacancies.The research shows that the energy storage cells with LSC0.2F0.8 as the electrode component have the best performance in all aspects.At 850℃and 1.6 V,the output current density is as high as 0.92A cm-2,the yield of energy fuel CO is 5.49 m L min-1 cm-2,and the Faraday current efficiency is close to 100%.The above results show that LSC0.2F0.8 as the electrode component has excellent energy conversion performance,which promotes the improvement of the overall performance of the cell system.In addition,the output current density of the cells has no obvious attenuation after 100 hours of operation at high temperature,which shows that the cells have excellent durability and stability.The second work of this experiment is to prepare a series of perovskite oxides La0.6Sr0.4FexO3-δ（LSFx,x=0.8-1.2）is used as the electrode component,and metal nano-iron particles are exsolved on its surface to form an active interface,which is used as the active center of the cells energy conversion reaction to improve the efficiency of steam conversion to produce energy hydrogen.The experimental results show that the yield of hydrogen is basically positively correlated with the amount of metal iron nanoparticles exsolved from the surface of the electrode parts.The energy storage cells with LSF1.1 as the electrode component have the highest hydrogen output at 850℃and 1.6 V,which is 4.52 m L min-1 cm-2.At this time,the current density output by the cell is 0.74 A cm-2,the polarization impedance is as low as 0.31Ωcm2,and the current efficiency in the circuit is 97.81%.It can be seen that the active interface formed on the surface of the electrode parts can improve the energy conversion performance of the cells.In addition,the cells also show excellent durability and cycling performance.After 50 hours of high-temperature operation and 6 cycles of operation,it still maintains stable current output and hydrogen production efficiency.The above results show that the constructed active interface plays a positive role in improving the overall performance of the cell.The two experiments in this study have designed and optimized the key electrode components of the solid oxide energy storage cell in different ways,so as to improve the energy conversion performance of the energy storage cell,which has reference value for improving and developing the electrode components in the future. |
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