Fig. 5: Electrochemical performance of thermal cycling and single cell stability.
From: Hydration-induced stiffness enabling robust thermal cycling of high temperature fuel cells cathode
a ASR(Rp) response of BCC and s-BCC-Y symmetric cell electrodes during 35 thermal cycles between 600 °C and 300 °C (at a heating rate of 10 °C min-1 and cooling rate at about 6.7 °C min-1) in air atmosphere. b Cross-sectional SEM and schematic diagram of a symmetric cell before and after cycling: crack, loss of the cathode, and delamination from electrolyte. I-V and I-P (I, current density; V, voltage; P, power density) curves of s-BCC-Y and BCC cathode with YSZ (c) and BZCYYb (d) electrolytes in H2/air, at 800 and 500 °C, respectively. The stability curves of the fuel cells for s-BCC-Y cathode with YSZ(e) and BZCYYb electrolyte(f). g The power of a large-scale cell with an s-BCC-Y cathode diameter of 3.5 cm from 450 to 650 °C. Source data for (a, c–g) were provided as a Source Data file.
