A highly active Ni/Ce_0.8Sm_0.2O_1.9anode catalyst with a three-dimensionally ordered macroporous structure for solid oxide fuel cells

Abstract

Ni/3DOM Ce0.8Sm0.2O1.9 shows a high catalytic activity as the anode material of CH3OH fueled SOFCs.

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

“…To clarify the electrochemical oxidation process of H 2 on the PSNM surface, the relationship between R p and P H2 is experimentally studied (Figure 7f). The R p and P H2 show a power−law relationship (R p ∼ P H2 α ), 47,48 and the α values are −0.95, −0.84, and −0.81 for SCFCs with R-PSNM-1, R-PSNM-2, and R-PSNM-3, respectively. Typi- ).…”

High-Entropy Alloys FeCoNiCuX (X = Al, Mo)-Ce0.8Sm0.2O2 as High-Performance Solid Oxide Fuel Cell Anodes

“…The catalytic oxidation process for H 2 and CH 4 fuel gas at the anode is as follows: the fuel gas is first adsorbed on the surface of FeCoNiCuX HEAs and then transferred to the TPB formed by FeCoNiCuX HEAs and SDC. This TPB provides the sites for electrochemical reactions, and the FeCoNiCuX HEAs conduct the electron transport and provide more adsorption and reaction active sites for the fuel gas, , SDC acts as a mixed ion conductor with high oxygen ion and electron transport properties, which can ensure the rapid supply of oxygen ions in the electrochemical reaction process and produce strong synergistic effect with FeCoNiCuX HEAs for rapid electron transfer, which is conducive to improving the dry reforming performance of methane.…”

“…Besides, Cu-based cermet, such as Cu-YSZ, as SOFC anode materials have also drawn a lot of attention due to the excellent coking tolerance of Cu for hydrocarbon fuel gases . Due to the excellent catalytic capability of CeO 2 for reducing the formation of C–C bonds, some works dope CeO 2 into Cu-YSZ to create composite anodes, which showed an enhanced synergistic effect for high catalytic activity and good anti-carbon deposition. , The composite nickel and doped cerium oxides, such as Ni-SDC (Ce 0.8 Sm 0.2 O 1.95 ) and Ni-GDC (Ce 0.9 Gd 0.1 O 1.95 ), as SOFC anodes show high mixed ionic and electronic conductivity, excellent electrochemical activity, and carbon-formation tolerance . Recently, Ni alloy cermet, such as Ni–Cu-YSZ, Ni–Cu-SDC, and Ni–Sn–CeO 2 , has been used as a SOFC anode, which demonstrated outstanding conductivity and excellent flexibility for hydrocarbon fuels.…”

Nanocomposite Catalyst for High-Performance and Durable Intermediate-Temperature Methane-Fueled Metal-Supported Solid Oxide Fuel Cells

“…Upon reduction under H 2 , NiO can be reduced to metallic Ni (Figure S3), creating interfaces between SDC and metallic Ni that serve as the active sites for SMR. It has been recognized that the catalyst synthesis processes can modulate these interfaces and tune the interactions between SDC and Ni. − As shown in Figures A,B, SDC–Ni Wet-Chemistry delivers the highest methane conversion and H 2 production rate among all three SDC–Ni. Additionally, SDC–Ni Wet-Chemistry achieves better performances than the YSZ–Ni anode, suggesting SDC–Ni Wet-Chemistry can lead to higher internal SMR activity than that of YSZ–Ni cermet SOFCs.…”