Fine interface contact and high activity of nickel-based anode modified by gadolinium for hydrogen and methane fuel. (22nd June 2022)

• Record Type: Journal Article
• Authors: Qi, Huiying; Su, Xin; Qiu, Peng; Zhang, Tonghuan; Liu, Di; Han, Shuna; Cui, Daan; Cheng, Mojie; Tu, Baofeng
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 52(2022)
• Page Start: 22192
• Page End: 22202
• Publication Date: 2022-06-22
• Subjects: Solid oxide fuel cell -- Nickel-based anode -- Gadolinium modification -- Interface contact -- Methane; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.05.035
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this work, gadolinium is used to modify nickel catalyst, which can improve the properties of nickel oxide particle and inhibit its sintering and grain growth. Interface contact between nickel catalyst and YSZ is significantly improved and fine anode microstructure can be obtained when gadolinium is used to modify Ni-YSZ anode. Fine interface contact of GdNi-YSZ anode can accelerate charge transfer process and steam formation process, which leads to high activity for electrochemical oxidation of hydrogen and low impedance resistance. The remarkable characteristic of GdNi-YSZ anode cell is that the cell performance for humidified methane fuel is greatly improved due to the high anode activity for methane reforming and electrochemical oxidation of hydrogen. The maximum power density of GdNi-YSZ anode cell with humidified methane as fuel can reach 1.59 W/cm 2 at 800 °C and 0.46 W/cm 2 at 650 °C. High performance of GdNi-YSZ anode cell with humidified methane as fuel leads to much H2 O produced during the electrochemical oxidation process, which can depress carbon deposition and improve the cell stability for humidified methane fuel. Graphical abstract: Image 1 Highlights: Interface contact of Ni-YSZ anode is significantly improved by Gd modification. Fine interface contact accelerates charge transfer and steam formation processes. Gd modification can improve the anode activity and cell performance for CH4 fuel. High cell performance leads to much H2 O produced and good stability for CH4 fuel.