High-performance protonic ceramic fuel cell cathode using protophilic mixed ion and electron conducting material

Abstract

Protonic ceramic fuel cells (PCFCs) are attractive energy conversion devices for intermediate-temperature operation (400-600 °C), however widespread application of PCFCs relies on the development of new high-performance electrode materials. Here...

Advances in Materials and Interface Understanding in Protonic Ceramic Fuel Cells

“…Regarding PCFC application Hu et al. reported on the electrochemical and protonic properties of a self‐assembled nanocomposite, Ba 0.5 Sr 0.5 (Co 0.7 Fe 0.3 ) 0.6875 W 0.3125 O 3 (BSCFW), consisting of a disordered single perovskite and an ordered double perovskite phase, [ 13 ] as a PCFC cathode material. BSCFW presents a low polarization resistance of 0.172 Ohm cm 2 at 600 °C and excellent stability ( Figure a–d) and a high power density of 582 mW cm −2 through single‐cell measurement (Figure 8e).…”

Perovskites for protonic ceramic fuel cells: a review

“…Furthermore, through partial W substitution in B-site cations (BSCFW), the proton conduction together with the chemical and thermal stability were improved. 10 Duan et al synthesized BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3− δ (BCFZY4411), which the authors called the “new generation” cathode material for PCFCs. 95 They claimed that Zr and Y doping could induce partial proton conduction into the cathode, which was the main reason for the improved cell performances (455 mW cm −2 recorded at 500 °C).…”

“…Currently, there is substantially increased interest in PCFCs for power generation because they have great potential for operation at reduced temperature, considering the high mobility of protons and the higher energy efficiency by avoiding the dilution effect of water on fuel gas. [8][9][10] It is believed that the decrease of operating temperature is a critical step in the commercialization of SOFC technology, 11 which would bring several valuable benefits, such as prolonged cell life times and reduced cell material, operating and sealing costs.…”

Exploring the potential of triple conducting perovskite cathodes for high-performance solid oxide fuel cells: a comprehensive review

“…7e). 58 The self-assembly of cathode materials has yielded a novel two-phase nanocomposite cathode material Ba 0.5 Sr 0.5 Co 0.6 -Fe 0.2 Zr 0.1 Y 0.1 O 3−d (BSCFZY) through the introduction of Zr and Y dopants into BSCF. The composite is characterized by the presence of two distinct cubic perovskites: a Co-rich phase (Ba 0.5 Sr 0.5 Co 0.7 Fe 0.2 Zr 0.07 Y 0.03 O 3−d ) that promotes electrocatalytic activity and a Zr-rich phase (Ba 0.6 Sr 0.4 Co 0.3 Fe 0.2 Zr 0.4 -Y 0.1 O 3−d ) that imparts robustness to the microstructure (Fig.…”