 |
Three-phase interface ultra-thin lead implantation process
Microstructure of interface after implanting ultra-thin measuring lead
With the growing concern over environmental issues, solid oxide fuel cells (SOFCs) are gaining more attention due to their promising applications and high research value. A typical SOFC consists of a supporting anode, an active anode, an electrolyte, and an active cathode. Achieving stable and superior battery performance is essential for commercialization. However, traditional characterization techniques like electrochemical impedance spectroscopy (EIS) struggle to isolate the key factors that influence performance, as the thickness of each component—approximately 400 μm for the anode, 10 μm for the active anode, 10 μm for the electrolyte, and 30 μm for the cathode—makes it difficult to distinguish individual contributions. Moreover, conventional methods only provide overall performance trends without quantifying the role of each part, which has long been a major challenge in SOFC research.
Researchers from the Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, have made a breakthrough by implanting ultra-thin electrodes at the three-phase interface between the two sides of the electrolyte. This innovative approach enabled the successful fabrication of a full cell with built-in interface measurement leads. Using this new structure, they conducted in-situ performance studies of the battery and discovered that the output performance of the SOFC is primarily determined by the performance of the triple phase boundary (TPB) at the electrode-electrolyte interface. They also found that increased polarization resistance on the anode side is the main cause of rising battery resistance, while the output voltage is more sensitive to ohmic resistance. These findings were published in *Advanced Energy Materials* (DOI: 10.1002/aenm.201400120).
This research breaks through the long-standing limitations in battery performance analysis. By enabling in-situ observation of the battery's voltage composition and quantitatively assessing the contribution of the three-phase interface, it offers a novel method for characterizing SOFC interfaces. It also provides a solid experimental foundation and practical guidance for improving battery performance through targeted measures. The study represents a significant step forward in understanding and optimizing SOFC technology.
Cross Section Wind Measuring flow meter
Cross Section Wind Measuring flow meter,Cross Section Wind Measure,Cross Section Wind Measure Equipment,Cross Section Type Wind Measure
Jingsu Huaerwei Science and Technology Group Co.,Ltd , https://www.hewflowmeter.com