Effect of nickel doping on structure and suppressing boron volatility of borosilicate glass sealants in solid oxide fuel cells

2019 ◽  
Vol 39 (6) ◽  
pp. 2179-2185 ◽  
Author(s):  
Mengyuan Ren ◽  
Peng Yang ◽  
Jing Xu ◽  
Qi Zhang ◽  
Kongfa Chen ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Borosilicate Glass ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Nickel Doping

Structure, electrical, and thermal expansion properties of (La0.8Ca0.2)(Cr0.9–xCo0.1Nix)O3–δ interconnect materials for intermediate temperature solid oxide fuel cells

2009 ◽  
Vol 24 (5) ◽  
pp. 1748-1755 ◽  
Author(s):  
Yen-Pei Fu ◽  
Hsin-Chao Wang
Keyword(s):  
Electrical Conductivity ◽  
Fracture Toughness ◽  
Grain Size ◽  
Thermal Expansion ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Thermal Expansion Coefficient ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Nickel Doping

The microstructure, lattice parameters, electrical conductivity, thermal expansion, and mechanical properties of (La0.8Ca0.2)(Cr0.9–xCo0.1Nix)O3–δ (x = 0.03, 0.06, 0.09, 0.12) were systematically investigated in this work. Nickel doping of (La0.8Ca0.2)(Cr0.9Co0.1)O3–δ is an effective way of increasing the thermal expansion coefficient (TEC) and stabilizing the high-temperature phase transformation from rhombohedral to tetragonal. As the nickel-doped content increases, the TEC increases parabolically by TEC (x) (ppm/°C) = 10.575 + 63.3x−240x2 (x = 0.03−0.12). The electrical conductivity of (La0.8Ca0.2)(Cr0.9–xCo0.1Nix)O3–δ specimens increases systematically with increasing nickel substitution in the range of 0.03 ≤ x ≤ 0.09 and reaches a maximum for the composition of (La0.8Ca0.2)(Cr0.81Co0.1Ni0.09)O3–δ (σ850 °C ∼60.36 S/cm). There is a slight increase in the fracture toughness with increasing nickel doping content, and the fracture toughness is strongly affected by the grain size. It seems that there is an increase in the fracture toughness with decreasing grain size. However, the microhardness does not significantly depend on the grain size in this study. The (La0.8Ca0.2)(Cr0.81Co0.1Ni0.09)O3–δ specimen shows high electrical conductivity, a moderate thermal expansion coefficient, and nearly linear thermal expansion behavior from room temperature to 800 °C. It will be suitable for interconnect materials for intermediate temperature solid oxide fuel cells (IT-SOFCs).

The effect of nickel doping on the microstructure and conductivity of Ca(Ti,Al)O 3‐δ for Solid Oxide Fuel Cells

2021 ◽  
Author(s):  
Narendar Nasani ◽  
G. Srinivas Reddy ◽  
Vanessa Graca ◽  
Amarnath Reddy Allu ◽  
Raghu C Reddy ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Nickel Doping

Ceramic modules for micro solid-oxide fuel cells

2011 ◽  
Vol 2011 (CICMT) ◽  
pp. 000009-000016
Author(s):  
Thomas Maeder ◽  
Bo Jiang ◽  
Yan Yan ◽  
Peter Ryser ◽  
Paul Muralt
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Borosilicate Glass ◽  
High Energy ◽  
Solid Oxide ◽  
Processing Unit ◽  
Oxide Fuel ◽  
Promising Alternative ◽  
Very High Energy

Micro solid-oxide fuel cells (μ -SOFCs) based on microfabrication processes are a promising alternative to batteries for supplying portable electronics, as very high energy densities may be achieved. However, a complete μ -SOFC module is a quite intricate structure, comprising 1) a gas-processing unit (GPU) to process a convenient energy source such as lighter gas into a more usable form, 2) the energy-generating cells proper, and 3) a post-combustor. The mechanical integration of these elements and their fluidic and electrical interconnection into a single module is a very challenging task for micro-scale integration. Therefore, a modular low-temperature co-fired ceramic (LTCC) package is proposed, allowing individual testing and subsequent full integration of the different cell elements. The package functions as a hotplate, a mechanical support for the hot zone and as an electrical / fluidic interconnect, applying a slender-bridge design to minimise thermal conduction losses and stresses, thus allowing convenient low-temperature electrical connections and fluidic ports. For applications requiring a better thermal expansion match to silicon and borosilicate glass, a silicon / borosilicate glass-sealed variant was also developed. Preliminary thermal characterisation of these packages is shown, and concepts for integrating the GPU and post-combustor into the LTCC structure are presented.

Effect of an Anode Functional Layer on Cell Performance of Anode-Supported Solid Oxide Fuel Cells by a Decalcomania Method

2013 ◽  
Vol 51 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Sun-Min Park ◽  
Hae-Ran Cho ◽  
Byung-Hyun Choi ◽  
Yong-Tae An ◽  
Ja-Bin Koo ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Cell Performance ◽  
Oxide Fuel ◽  
Functional Layer
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