Micro-tube energy solid oxide fuel cells (SOFCs) have been developed in recent years, mainly because of their high surface area and rapid thermal cycle. In the past, forging micro-tube energy solid oxide fuel cells was a multi-step process.

[1-3] The support of the support layer (such as anode) is to prepare and pre-sinter the fuel cell with mechanical strength. Then, before the cathode layer is finally coated, the electrolyte layer is placed and sintered. Each step includes at least one high-temperature heat treatment, which makes the battery manufacturing time-consuming and expensive, and the battery quality control is unstable. In order to control the reliability and adaptability of SOFCs more economically, an advanced dry-jet wet extrusion technology, namely * * * process based on one-step transformation, was developed. Using this technology, the electrolyte/electrode (anode and cathode) double-layer hollow fiber (HF) can form a single step. Generally, electrolytes and electrode materials are mixed with solvents, polymer binders, additives and other factors to form an outer layer and an inner layer, which are suspended in rotation. Before they are separated, they pass through a three-hole spinneret, pass through an air gap, and finally enter a bath without external curing. At the same time, a series of key points are to provide internal coagulant to spray through the central circular hole. The thickness of the two layers depends largely on the design used, and the corresponding extrusion rate can be adjusted, but the improper or morphological preparation of high-frequency precursors can be controlled.

Adjust viscosity and other parameters * * * Pause, air gap, flow rate of internal coagulant. Once the boundary between the polymer binder and the template is removed at high temperature, the bilayer high frequency precursor is then co-sintered to obtain a ceramic material. In previous studies, [4-6] double-layer microtubes can support SOFCs at high frequency, including an electrolyte outer layer of about 80μm to support 35% of the delamination gap length in asymmetric anode.

Successfully fabricated the process of using * * * and co-sintering. The high frequency power density from multilayer cathode to bilayer obtained by a single cell after deposition produces a maximum of 0.59 W·cm2·C? In 570 [6], the double-layer HFs with improved structure was significantly increased from reducing the thickness of electrolyte layer to 10μm to about1.1wcm2c? 600 years.