A hybrid catalyst coating for a high-performance and chromium-resistive cathode of solid oxide fuel cells

Heterogeneous Catalyst Coating for Boosting the Activity and Chromium Tolerance of Cathodes for Solid Oxide Fuel Cells

“…[25][26][27] However, relying on a single phase to simultaneously meet the stringent requirements of an ideal cathode, such as high electrocatalytic activity and excellent Cr durability, is almost impossible, whereas the design and development of a multiphase cathode provides new opportunities. [28][29][30][31][32][33][34] Heterointerface and coactive interactions between multiphase catalysts reportedly enhance the electrocatalytic activity and durability of electrodes under various operating conditions. [35][36][37][38][39] Researchers recently reported that self-assembled BaCeO 3-𝛿 -based perovskite oxide cathodes with dual/multiphases exhibited synergistic interplay.…”

“…[ 25–27 ] However, relying on a single phase to simultaneously meet the stringent requirements of an ideal cathode, such as high electrocatalytic activity and excellent Cr durability, is almost impossible, whereas the design and development of a multiphase cathode provides new opportunities. [ 28–34 ]…”

Surface regulating and hetero-interface engineering of an LSCF cathode by CVD for solid oxide fuel cells: integration of improved electrochemical performance and Cr-tolerance

“…Moreover, the segregated Sr readily reacts with the Cr species vapourised from the interconnections and forms insulated SrCrO 4 and Cr 2 O 3 deposition by nucleation, crystallisation, and gains a growth process, which is detrimental to the ORR activity, thus leading to the continuous deterioration of the SOFCs. [17][18][19][20][21] Therefore, the electrochemical performance and durability of the LSCF cathode needs to be further enhanced to meet the commercial requirements.…”

Electrochemically Assisted Construction of a La2NiO4+δ@Pt Core–Shell Structure for Enhancing the Performance and Durability of La2NiO4+δ Cathodes

“…1 Perovskite oxide La 0.8 Sr 0.2 MnO 3+δ (LSM) is the state-of-the-art cathode material for high-temperature SOFCs, but the electrocatalytic activity of LSM is very poor at intermediate temperatures due to its high activation energy and lack of ionic conductivity. 2,3 In contrast, another perovskite oxide, La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−δ (LSCF), with mixed ionic/electronic conductivities shows outstanding electrocatalytic activity at intermediate temperatures, though the high tendency of segregation of Sr cations on the surface of LSCF poses a critical challenge for long-term durability. 4 The Ruddlesden−Popper (RP) series of A n+1 B n O 3n+1 oxides have attracted much attention, with La 2 NiO 4+δ (LNO) being a promising candidate cathode material.…”

“…The performance of IT-SOFCs is limited by the sluggish kinetics of the oxygen reduction reaction (ORR); however, the electrocatalytic properties of the ORR rely on the intrinsic properties of cathodes . Perovskite oxide La 0.8 Sr 0.2 MnO 3+δ (LSM) is the state-of-the-art cathode material for high-temperature SOFCs, but the electrocatalytic activity of LSM is very poor at intermediate temperatures due to its high activation energy and lack of ionic conductivity. , In contrast, another perovskite oxide, La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−δ (LSCF), with mixed ionic/electronic conductivities shows outstanding electrocatalytic activity at intermediate temperatures, though the high tendency of segregation of Sr cations on the surface of LSCF poses a critical challenge for long-term durability …”