Development of a tubular molten carbonate direct carbon fuel cell and basic cell performance

Ido, Akifumi; Kawase, Makoto

doi:10.1016/j.jpowsour.2019.227483

Cited by 13 publications

(12 citation statements)

References 19 publications

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“…Reproduced from refs. [41,95,96,98,99] The above equations also indicate that P CO 2 could influence the open-circuit voltage (OCV) of the cell, as shown in Eq. ( 4) [41].…”

Section: Mechanismsmentioning

confidence: 99%

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Review of molten carbonate-based direct carbon fuel cells

Cui

Gong

et al. 2021

Mater Renew Sustain Energy

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Direct carbon fuel cell (DCFC) is a promising technology with high energy efficiency and abundant fuel. To date, a variety of DCFC configurations have been investigated, with molten hydroxide, molten carbonate or oxides being used as the electrolyte. Recently, there has been particular interest in DCFC with molten carbonate involved. The molten carbonate is either an electrolyte or a catalyst in different cell structures. In this review, we consider carbonate as the clue to discuss the function of carbonate in DCFCs, and start the paper by outlining the developments in terms of molten carbonate (MC)-based DCFC and its electrochemical oxidation processes. Thereafter, the composite electrolyte merging solid carbonate and mixed ionic–electronic conductors (MIEC) are discussed. Hybrid DCFC (HDCFCs ) combining molten carbonate and solid oxide fuel cell (SOFC) are also touched on. The primary function of carbonate (i.e., facilitating ion transfer and expanding the triple-phase boundaries) in these systems, is then discussed in detail. Finally, some issues are identified and a future outlook outlined, including a corrosion attack of cell components, reactions using inorganic salt from fuel ash, and wetting with carbon fuels.

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“…Reproduced from refs. [41,95,96,98,99] The above equations also indicate that P CO 2 could influence the open-circuit voltage (OCV) of the cell, as shown in Eq. ( 4) [41].…”

Section: Mechanismsmentioning

confidence: 99%

“…Recently, a tubular DCFC with a closed-end structure was conceived by Ido et al [99], using carbonate as the electrolyte (See Fig. 2e).…”

Section: Configurationmentioning

confidence: 99%

Review of molten carbonate-based direct carbon fuel cells

Cui

Gong

et al. 2021

Mater Renew Sustain Energy

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“…Depending on the electrolyte type, FCs are categorized and utilized in the market for different applications [1,2]. Examples of FC types are; (i) Proton exchange membrane FCs (PEMFCs) [7,8], (ii) Solid oxide FCs (SOFCs) [9,10], (iii) Molten carbonate FCs (MCFCs) [11], (iv) Phosphoric acid FCs (PAFCs) [8], (v) Alkaline FCs (AFCs) [12,13] and furthermore. Specifically, the basic characteristics of the latter-mentioned types are illustrated in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Computational Techniques Based on Artificial Intelligence for Extracting Optimal Parameters of PEMFCs: Survey and Insights

Ashraf

Abdellatif

Elkholy

et al. 2022

Arch Computat Methods Eng

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For the sake of precise simulation, and proper controlling of the performance of the proton exchange membrane fuel cells (PEMFCs) generating systems, robust and neat mathematical modelling is crucially needed. Principally, the robustness and precision of modelling strategy depend on the accurate identification of PEMFC’s uncertain parameters. Hence, in the last decade, with the noteworthy computational development, plenty of meta-heuristic algorithms (MHAs) are applied to tackle such problem, which have attained very positive results. Thus, this review paper aims at announcing novel inclusive survey of the most up-to-date MHAs that are utilized for PEMFCs stack’s parameter identifications. More specifically, these MHAs are categorized into swarm-based, nature-based, physics-based and evolutionary-based. In which, more than 350 articles are allocated to attain the same goal and among them only 167 papers are addressed in this effort. Definitely, 15 swarm-based, 7 nature-based, 6 physics-based, 2 evolutionary-based and 4 others-based approaches are touched with comprehensive illustrations. Wherein, an overall summary is undertaken to methodically guide the reader to comprehend the main features of these algorithms. Therefore, the reader can systematically utilize these techniques to investigate PEMFCs’ parameter estimation. In addition, various categories of PEMFC’s models, several assessment criteria and many PEMFC commercial types are also thoroughly covered. In addition to that, 27 models are gathered and summarized in an attractive manner. Eventually, some insights and suggestions are presented in the conclusion for future research and for further room of improvements and investigations.

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“…The wettability between a liquid media and a solid substrate is ubiquitous in nature − and used in industrial applications such as electrochemical devices, − chemical reactors, , and metallurgical furnaces. , For example, the wettability of electrolyte on electrode and internal cell component materials is the key factor to improve the power density and lifetime of molten carbonate fuel cells (MCFCs); thus, it is widely investigated in the last 10 years. , As a typical type of MCFCs using carbon as fuel, direct carbon fuel cells (DCFCs) can efficiently convert carbon energy into electricity without the efficiency limitation of the Carnot cycle. − The DCFCs involve the wetting between the liquid molten carbonate electrolyte and the solid carbon electrode. − In a typical DCFC, the carbon anode is in contact with the molten carbonate and oxidized at the carbon/molten carbonate (C/MC) interface . The wettability of molten carbonate on the carbon electrode defines the C/MC interface that allows the mass transfer between the anodic product and electrolyte. , Thus, a good wettability between the molten carbonate and the carbon anode ensures good electrochemical performances in terms of power density and efficiency. ,, The wettability of a liquid medium on a solid substrate is defined by the contact angle and the rate of the wetting process .…”

Section: Introductionmentioning

confidence: 99%

“…17−19 In a typical DCFC, the carbon anode is in contact with the molten carbonate and oxidized at the carbon/molten carbonate (C/ MC) interface. 20 The wettability of molten carbonate on the carbon electrode defines the C/MC interface that allows the mass transfer between the anodic product and electrolyte. 15,21 Thus, a good wettability between the molten carbonate and the carbon anode ensures good electrochemical performances in terms of power density and efficiency.…”

Section: ■ Introductionmentioning

confidence: 99%

Wetting Kinetics of Molten Carbonate on Carbon

Dou

Wang

et al. 2021

Langmuir

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The wettability of molten carbonate on carbon determines the electrochemical performances of high-temperature direct carbon fuel cells (DCFCs). However, a universal method to measure the high-temperature wettability of molten carbonate is absent and the wetting kinetics is not well understood. Herein, we develop a dispensed drop (DD) method to measure the wetting kinetics of molten carbonate (Li 2 CO 3 −Na 2 CO 3 −K 2 CO 3 , 43.5:31.5:25.0, molar ratio) on the carbon substrate at 450−750 °C under controlled atmospheres (100%Ar, 100%CO 2 , and 1% O 2 −99%N 2 ). The measured contact angles under different conditions reveal that increasing the O 2− concentration in the gas−liquid−solid (GLS) interface decreases the contact angle. In addition, elevating the temperature, introducing O 2 in the gas atmosphere, or pretreating the carbon substrate can enhance the wetting kinetics of molten carbonates. The molten carbonate completely wets the carbon substrate in 150 min in Ar gas atmosphere and in 30 min in 1%O 2 −99%N 2 gas atmosphere at 600 °C. Further, it takes only 30 min to completely wet the pretreated carbon substrate in Ar atmosphere at 600 °C. Overall, this paper offers the DD method to study the wettability of molten carbonate on the carbon substrate, which is helpful to understand the underlying wetting mechanism and engineer the electrode design for DCFCs.

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Development of a tubular molten carbonate direct carbon fuel cell and basic cell performance

Cited by 13 publications

References 19 publications

Review of molten carbonate-based direct carbon fuel cells

Review of molten carbonate-based direct carbon fuel cells

Computational Techniques Based on Artificial Intelligence for Extracting Optimal Parameters of PEMFCs: Survey and Insights

Wetting Kinetics of Molten Carbonate on Carbon

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