Improving the performance of Pr0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ-based single-component fuel cell and reversible single-component cells by manufacturing A-site deficiency

Evaluating the Effect of B-Site Cation Doping on the Properties of Pr0.4Sr0.5Fe0.9Mo0.1O3 for Reversible Single-Component Cells

“…Compared with the traditional three-layer structure SOFC, the SCFC has the advantages of facile preparation, simplified operation requirements, etc. At the same time, it can avoid the chemical and mechanical incompatibility between the electrolyte and the electrode, so it has a good development prospect. , Preliminary research work has shown that a single-component structure cell can also be used as an RSOC, which can be called a reversible single-component cell (RSCC) . Usually, RSCCs are composed of ionic conductors and semiconducting materials.…”

“…The Pr 0.4 Sr 0.6 Co 0.2 Fe 0.7 Nb 0.1 O 3 perovskite material can in situ precipitate Co–Fe alloy in H 2 atmosphere and attach to the surface of the Ruddlesden–Popper (R–P) structure oxides to improve the electronic conductivity of the material . In addition, previous research work found that A-site defects can promote the exsolution of Co–Fe alloys and increase the concentration of oxygen vacancy ( V o •• ), further improving the catalytic activity of the electrode reaction . In addition, Zhai et al found that in situ precipitation of FeNi alloys from perovskite materials can also boost the catalytic activity .…”

The Performance of Ruddlesden–Popper (R-P) Structured Pr2–xSrxNi0.2Mn0.8O4 for Reversible Single-Component Cells

“…The SOFC with this R-P structured anode generated the P max values of 0.92 and 0.59 W cm –2 in wet C 3 H 8 at 850 and 800 °C, respectively. In addition, in our previous work, the R-P structured oxide prepared by in situ reduction of Pr 0.4 Sr 0.55 Co 0.2 Fe 0.7 Nb 0.1 O 3−δ showed good discharge and electrolysis performance of the RSCC . Therefore, it can be conjectured that the R-P oxides Ln 2– x Sr x MnO 4 (Ln = Pr and La) may be stable in a reducing atmosphere and exhibit good electrochemical activity for H 2 oxidation and water splitting.…”

“…For cell fabrication, the prepared (Li/Na) 2 CO 3 (LN) and Sm 0.2 Ce 0.8 O 2 (SDC) with a weight ratio of 3:7 were mixed uniformly through a high-speed ball mill to form the SDC-LN composite material and this material was used as an ionic conductor of the RSCC and SCFC . The as-prepared SDC-LN and PSNM oxides were uniformly mixed with a weight ratio of 7:3, and then the mixed composite powders were pressed at 500 MPa to form the cell with a thickness of 0.9 mm . From the SEM image inserted in Figure , the cell shows a porous structure, which will promote the diffusion of the oxidant and fuel to the triple-phase boundary (TPB) of the electrode regions, thereby reducing the concentration polarization.…”

“…As a new type of SOFC system, the single-component fuel cell (SCFC) can effectively solve the problem of electrode–electrolyte material mismatch at high temperatures due to its simplified cell structure. , Nowadays, little research focuses on the RSOC with the configuration of an SCFC. It can be imagined that if the SCFC material has a good ability to split water, it can be used as an RSOC, and this cell can be called a reversible single-component cell (RSCC) . Typically, the SCFC is composed of semiconductor and ionic conductor materials, among which the semiconductor materials play the main catalytic role for hydrogen oxidation and oxidation reduction reaction.…”