Improved activity and stability of Ni-Ce0.8Sm0.2O1.9 anode for solid oxide fuel cells fed with methanol through addition of molybdenum

Abstract

Ni-Mo-Ce 0.8 Sm 0.2 O 1.9 (SDC) composites are prepared and investigated as anodes of solid oxide fuel cells with methanol as fuel. The addition of Mo improves the catalytic activity for methanol pyrolysis and the resistance to carbon deposition of Ni-SDC anode. The anode with a mole ratio of Mo to Ni of 0.03:1 exhibits the lowest polarization resistance. The cell with that anode and SDC-carbonate composite electrolyte shows a maximum power density of 680 mW cm-2 at 700 o C. The stability of the cell is enhanced with the increase of the content of Mo in the anode, which is mainly attributed to the decreased amount of carbon deposits with a high graphitization degree.

Recent Advances in the Development of Anode Materials for Solid Oxide Fuel Cells Utilizing Liquid Oxygenated Hydrocarbon Fuels: A Mini Review

“…Very recently, Li et al. decorated the Ni‐SDC anode by Mo metal and MoO 3 to enhance its electro‐activity and coking resistance for SOFCs operating on methanol fuel . By tailoring Ni to Mo ratio, the Ni‐3Mo‐SDC (a Mo to Ni molar ratio of 0.03:1) composite anode displayed the lowest anodic polarization resistance and the highest power output among the three Mo‐modified Ni‐SDC anodes.…”

Investigation of Direct‐Fed Solid Oxide Fuel Cell Fueled by Upgraded Bio‐Oil Extracted from Olive Waste Pyrolysis: Part 2: Analysis of Electrochemical Behavior and Cell Performance

“…This composite electrolyte was previously synthesized and reported in SOFC systems with hydrocarbons fuels such as methanol and methane [28,[36][37][38] The SDC powder was prepared via oxalate co-precipitation process. This composite electrolyte was previously synthesized and reported in SOFC systems with hydrocarbons fuels such as methanol and methane [28,[36][37][38] The SDC powder was prepared via oxalate co-precipitation process.…”

“…This composite electrolyte was previously synthesized and reported in SOFC systems with hydrocarbons fuels such as methanol and methane [28,[36][37][38] The SDC powder was prepared via oxalate co-precipitation process. [36][37] The single SOFC was prepared using uniaxial cold pressing technique at 500 MPa (30 kpsi) following the subsequent adding of the composite electrolyte and cathode powders. [36][37] The single SOFC was prepared using uniaxial cold pressing technique at 500 MPa (30 kpsi) following the subsequent adding of the composite electrolyte and cathode powders.…”

A LaNi0.9Co0.1O3 coated Ce0.8Sm0.2O1.9 composite anode for solid oxide fuel cells fed with methanol

“…Adding other metals in Ni to form alloys is an efficient way to improve the coking resistance of these anodes. Our previous works demonstrate that the formation of Ni-Mo and Ni-Co alloys could suppress carbon deposition in methanol atmosphere [27,28]. Liu and coworkers [29,30] found that Ni-Co alloy derived from hydroxides and perovskites exhibited high activity and good stability for methanation of CO and steam reforming of ethanol.…”