fig1

Figure 1. Energy level diagrams of (A) a PSC and (B) the fuel-to-electricity conversion device inspired by the PSC structure^[16]. LSCT: La_0.2Sr_0.25Ca_0.45TiO₃; LSCF: La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ; SCDC: Ce_0.8Sm_0.05Ca_0.15O_2-δ; NCAL: Ni_0.8Co_0.15Al_0.05LiO_2-δ; FTO: fluorine-doped tin oxide; HTM: hole transport materials.