Enhanced production of methane through the use of a catalytic Ni–Fe pre-layer in a solid oxide co-electrolyser - Faro, M. Lo; Silva, W Oliveira da; Barrientos, Wilner Valenzuela; Saglietti, Guilherme Gonçalves de Aquino; Zignani, SC; Antonucci, Vittorio; Ticianelli, Edson Antonio; Arico, A S (International Journal of Hydrogen Energy, 2020)