The performance of low temperature solid oxide fuel cells based on CuO-ZnO
The preparation of electrolytes with excellent ionic conductivity and low temperature high chemical properties is an important development direction for the practical application of solid oxide fuel cells.In this regard,p-n semiconductor heterojunction materials based on p-type CuO and n-type ZnO were constructed and used as electrolytes in low-temperature solid oxide fuel cells.The electrolyte materials with different mass ratios of CuO-ZnO were prepared and assembled Ni0.8 Co0.15 A10.05 LiO2-δ/CuO-ZnO/Ni0.8 Co0.15 Al0.05 LiO2-δ single cell for performance test.The results show that the fuel cell based on pure ZnO electrolyte material has the lowest performance(the open circuit voltage is 0.8 V at 550 ℃,the maximum power density is 187.5 mW/cm2),and the fuel cell with a composite mass ratio of 1:9 has the best performance(the open circuit voltage is 1.065 V at 550 ℃,the instantaneous maximum power density is 555 mW/cm2).Through the electrochemical impedance analysis of CuO-ZnO heterojunction composites,it is found that the constructed p-n semiconductor heterojunction provides a channel for ion transport and improves the ionic conductivity.Studies have shown that p-n type electrolyte composites have great potential in the application of low temperature solid oxide fuel cells.
low temperature solid oxide fuel cellelectrolyte materialsemiconductor p-n type
NETL
NSTL
万方数据
