Synthesis of ammonia directly from wet nitrogen using a redox stable La<sub>0.75</sub>Sr<sub>0.25</sub>Cr<sub>0.5</sub>Fe<sub>0.5</sub>O<sub>3−δ</sub>–Ce<sub>0.8</sub>Gd<sub>0.18</sub>Ca<sub>0.02</sub>O<sub>2−δ</sub>composite cathode
RSC advances