A novel U-shaped anode-supported hollow fiber solid oxide fuel cell with considerable thermal cycling performance and stability

A novel U-shaped anode-supported hollow fiber solid oxide fuel cell (Ni–YSZ/YSZ/YSZ–La0.8Sr0.2MnO3−δ) was fabricated via wet spinning followed by sintering. The anode support has an asymmetric configuration with finger-like structure inside and sponge-like structure outside. The peak power densities are 104, 256, 584, 884 mW cm−2 at 600, 650, 700, 750 °C, respectively. The U-shaped anode-supported hollow fiber solid oxide fuel cell (SOFC) shows considerable thermal cycling performance with 65 cycles, which indicates an exciting way to solve the problem of breakage of the straight hollow fiber SOFC during increasing and decreasing temperatures. Furthermore, the cell was operated at 0.7 V and 600 °C for additional 100 h without significant degradation after the 65 cycles.