Nickel-cermet electrodes for high-temperature electrochemical devices made using nanomaterials

Characteristics of nickel-cermet anodes obtained from weakly aggregated NiO nanopowders made by wire electric blasting (NiO/WEB) were studied. Electrodes made of NiO/WEB nanopowders have low sheet resistance (<0.1 Ohm) and high electrochemical activity (R η = 0.06–0.09 Ohm cm2 at 850–900°C). Prolonged studies of symmetric cells of the (0.9H2 + 0.1H2O) Ni-SSZ + CeO2/YSZ/CeO2 + Ni-SSZ (0.9H2 + 0.1H2O) type at the temperature of 850°C showed that the electrodes preserve sufficiently high activity (R η < 0.1 Ohm cm2) for 1000 h. Using a NiO-WEB powder allows not performing presynthesis of nickel-cermet and decreasing the anode baking temperature to 1200°C.