Development of Segmented-in-series-type Solid Oxide Fuel Cells for Residential Applications

Fujita, K.; Seyama, Takehiro; Sobue, Tsutomu; Matsuzaki, Yoshio

doi:10.1016/j.egypro.2012.08.049

Cited by 17 publications

(6 citation statements)

References 16 publications

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“…Most established are stacked planar and segmented‐in‐series tubular reactors with electrolyte or electrode supported cells. Their application at TRL 7 and higher is currently limited to fuel cells and electrolysis.…”

Section: Classification and Functionalities Of Ecmrsmentioning

confidence: 99%

Electrochemical Ceramic Membrane Reactors in Future Energy and Chemical Process Engineering

Heddrich

Gupta

Santhanam

2019

Chemie Ingenieur Technik

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Electrochemical ceramic membrane reactors (ECMRs) with their unique ability to efficiently couple electrical, chemical, and thermal energy sectors can be a large part of the transition toward renewable energies and defossilized economies. ECMRs utilize ceramic conductors to extract or distribute oxide ions or protons -directly controlled by an external electric current. This article gives an overview of ECMR properties along with the functionalities and advantages. For many reactions, e.g., the direct synthesis of ammonia, ECMRs are not available at the preferred temperature range of 300 -550°C. To evidence the possibility of such reactors, functional materials are reviewed. A simple thermodynamic methodology is proposed to determine the suitability of reactions for particular combinations of coupled energy sectors.

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Section: Classification and Functionalities Of Ecmrsmentioning

confidence: 99%

Electrochemical Ceramic Membrane Reactors in Future Energy and Chemical Process Engineering

Heddrich

Gupta

Santhanam

2019

Chemie Ingenieur Technik

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“…Stacking can be realized based on a number of different cell architectures; e.g. tubular [5], microtubular [6], segmented cells in series [7,8], or planar cells; each design having their specific merits and engineering challenges. In the planar design, the cells are connected in series by use of metallic interconnect plates and glasses/glass-ceramics are used for sealing [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…In order to attain a higher power density or production capacity, multiple solid oxide cells (SOC) are combined into a stack. Stacking can be realized on the basis of a number of different cell architectures (e.g., tubular, microtubular, segmented cells in series, , or planar cells), each design having their specific merits and engineering challenges. In the planar design, the cells are connected in series by use of metallic interconnect plates and glasses/glass-ceramics are used for sealing. , This design is advantageous in terms of the achievable powder density, but because of the limiting firing/assembly temperature set by the interconnect and seal, ensuring strong adherence between the stack components is challenging.…”

Section: Introductionmentioning

confidence: 99%

Interface Fracture Energy of Contact Layers in a Solid Oxide Cell Stack

Han

Talic

Kwok

et al. 2020

ACS Appl. Energy Mater.

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A critical factor for improving the long-term stability/reliability of solid oxide cell stacks is ensuring good adhesion between the stack components. Specifically, ensuring strong adherence between the oxygen electrode and the interconnect is challenging. This work compares the suitability of several materials as contact layers between a La 0.6 Sr 0.4 CoO 3-δ-Ce 0.8 Gd 0.2 O 2 composite oxygen electrode and Mn 1.5 Co 1.5 O 4 or Co coated metallic interconnects. The contact materials were screened based on measurements of the interface fracture energy using four-point bending of sandwiched samples. The highest fracture energies were measured using a CuMn metallic, spinel forming foam as the contact layer. The fracture energy of the interface between a Mn 1.5 Co 1.5 O 4 coated interconnect and the contact layer is ~8 times higher using the CuMn foam compared to using conventional (La 0.8 Sr 0.2) 0.98 MnO 3-σ , La 0.6 Sr 0.4 CoO 3-δ , (La 0.8 Sr 0.2) 0.98 MnO 3-σ + La 0.6 Sr 0.4 CoO 3-δ or LaNi 0.6 Fe 0.4 O 3 as the contact material. The interface bonding and fracture mechanisms are discussed on the basis of scanning electron microscopy investigations.

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“…We analyzed a combined power generation cycle with low-and high-temperature SOFCs arranged in series (including a gas turbine) and revealed that the two-staged SOFC cycle has both higher SOFC power generation efficiency and higher combined cycle efficiency [4,5]. Some groups have also worked on the development of in-series interconnection SOFCs enabling a high-voltage and high-fuel-use compact unit [6,7].…”

Section: Introductionmentioning

confidence: 99%

A Dynamic Analysis of the Multi-Stack SOFC-CHP System for Power Modulation

et al. 2019

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This paper performs a dynamic analysis of a 10-kW solid oxide fuel cell/combined heat and power (SOFC-CHP) system with a multi-stack module via numerical simulations. The performance of stacks, tail gas burners, heat exchangers, and fuel reformers are modeled by the MATLAB/Simulink module. The effects of fuel and air maldistribution on SOFC-CHP systems are addressed in this work. A two-stack module for 10-kW power generation is adopted to represent the multi-stack module with high power modulation. The air flow rate and operating current, which are related to the fuel use rate of an SOFC system, should be optimally regulated to perform with maximum power generation and efficiency. The proposed dynamic analysis shows that the operating temperatures of the two stacks have a difference of 33 K, which results in a reduced total power generation of 9.77 kW, with inconsistent fuel use (FU) rates of 78.3% and 56.8% for the two stacks. With the optimal control strategy, the output power is increased to 10.6 kW, an increment of 8.5%, and the FU rates of the two stacks are improved to 79% and 70%, respectively. As a potential distributed power generator, the long-term effects of the studied SOFC-CHP systems are also investigated. The dynamic analysis of the long-term operating SOFC-CHP system shows that the total daily output power can be increased 7.34% by using the optimal control strategy.

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Development of Segmented-in-series-type Solid Oxide Fuel Cells for Residential Applications

Cited by 17 publications

References 16 publications

Electrochemical Ceramic Membrane Reactors in Future Energy and Chemical Process Engineering

Electrochemical Ceramic Membrane Reactors in Future Energy and Chemical Process Engineering

Interface Fracture Energy of Contact Layers in a Solid Oxide Cell Stack

A Dynamic Analysis of the Multi-Stack SOFC-CHP System for Power Modulation

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