Seventh Edition Fuel Cell Handbook

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doi:10.2172/834188

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…19) due to low CO 2 concentrations is given by where J lim is the limiting current density of the cell. 21 Near this limiting current density, the cell potential drops sharply, and above this limiting current density the cell simply ceases to function. The dependence of the limiting current on CO 2 partial pressure can be approximated as where P 1 and P 2 are experimentally determined parameters, and p CO 2 is the partial pressure of CO 2 within the cathode.…”

Section: Discussionmentioning

confidence: 99%

“…The flue gas from a combined cycle gas turbine has a low CO 2 :O 2 ratio of ≈1:2.5 by volume compared to the stoichiometric requirement of 2:1. 21 This means that O 2 is in excess in the cathode, which serves to increase the cell potential slightly, although not enough to offset the substantial decline in potential by the low CO 2 concentration. This highlights the need for more experimental and process modelling work at these operating conditions to further develop, understand, and scale-up molten carbonate fuel cells for CO 2 capture in NGCC applications.…”

Section: List Of Symbolsmentioning

confidence: 99%

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Molten Carbonate Fuel Cell Performance for CO₂ Capture from Natural Gas Combined Cycle Flue Gas

Rosen

Geary

Hilmi

et al. 2020

J. Electrochem. Soc.

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CO2 capture and sequestration (CCS) from stationary flue gas sources is one of the critical technologies needed as the future energy landscape shifts to low carbon intensity energy systems. Molten carbonate fuel cells (MCFCs) have the potential to capture CO2 from flue gas at higher thermal efficiency than traditional CCS technologies while simultaneously producing electricity. Herein, we present an investigation of molten carbonate fuel cell behavior at carbon capture conditions using simulated natural gas combined cycle flue gas. Measurements at these low CO2 and high current conditions reveal a lower than expected cathodic consumption of CO2 Based on the strong dependence of this deviation on water partial pressure as well as mass balances revealing a net consumption of water at the cathode, a parallel oxygen reduction mechanism is proposed. In this mechanism, water and oxygen are consumed at the cathode to produce hydroxide ions which migrate through the electrolyte to the anode. This parallel mechanism contributes to power generation but not to CO2 capture. Mass transport limitations in the molten carbonate fuel cell cathode were identified as the primary driver for this alternative mechanism which were heavily influenced by the design of the current collector and cathode interface.

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Section: Discussionmentioning

confidence: 99%

Section: List Of Symbolsmentioning

confidence: 99%

Molten Carbonate Fuel Cell Performance for CO₂ Capture from Natural Gas Combined Cycle Flue Gas

Rosen

Geary

Hilmi

et al. 2020

J. Electrochem. Soc.

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“…(20)) can be easily calculated using a cost function given by NETL (available in Ref. [36]) and from the definition of the total surface of the module. This cost is composed by two main components, shown in Table 10, expressed per unit of surface and of electrical power produced.…”

Section: Total Investment Costmentioning

confidence: 99%

Large size biogas-fed Solid Oxide Fuel Cell power plants with carbon dioxide management: Technical and economic optimization

Curletti

Gandiglio

Lanzini

et al. 2015

Journal of Power Sources

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“…Studied NEXA Ballard PEMFC uses the air-based heat exchange system for stack cooling. High-temperature PEMFC provides easier heat regulation, in comparison with studied low-temperature PEMFC, due to higher working temperatures and using liquid refrigerants for stack cooling [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Optimization of NEXA Ballard Low-Temperature PEMFC

Chesalkin¹,

Kacor

Moldrik

2021

Energies

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Hydrogen is one of the modern energy carriers, but its storage and practical use of the newest hydrogen technologies in real operation conditions still is a task of future investigations. This work describes the experimental hydrogen hybrid energy system (HHS). HHS is part of a laboratory off-grid system that stores electricity gained from photovoltaic panels (PVs). This system includes hydrogen production and storage units and NEXA Ballard low-temperature proton-exchange membrane fuel cell (PEMFC). Fuel cell (FC) loses a significant part of heat during converting chemical energy into electricity. The main purpose of the study was to explore the heat distribution phenomena across the FC NEXA Ballard stack during load with the next heat transfer optimization. The operation of the FC with insufficient cooling can lead to its overheating or even cell destruction. The cause of this undesirable state is studied with the help of infrared thermography and computational fluid dynamics (CFD) modeling with heat transfer simulation across the stack. The distribution of heat in the stack under various loads was studied, and local points of overheating were determined. Based on the obtained data of the cooling air streamlines and velocity profiles, few ways of the heat distribution optimization along the stack were proposed. This optimization was achieved by changing the original shape of the FC cooling duct. The stable condition of the FC stack at constant load was determined.

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Seventh Edition Fuel Cell Handbook

Cited by 10 publications

References 4 publications

Molten Carbonate Fuel Cell Performance for CO₂ Capture from Natural Gas Combined Cycle Flue Gas

Molten Carbonate Fuel Cell Performance for CO₂ Capture from Natural Gas Combined Cycle Flue Gas

Large size biogas-fed Solid Oxide Fuel Cell power plants with carbon dioxide management: Technical and economic optimization

Heat Transfer Optimization of NEXA Ballard Low-Temperature PEMFC

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Seventh Edition Fuel Cell Handbook

Cited by 10 publications

References 4 publications

Molten Carbonate Fuel Cell Performance for CO2 Capture from Natural Gas Combined Cycle Flue Gas

Molten Carbonate Fuel Cell Performance for CO2 Capture from Natural Gas Combined Cycle Flue Gas

Large size biogas-fed Solid Oxide Fuel Cell power plants with carbon dioxide management: Technical and economic optimization

Heat Transfer Optimization of NEXA Ballard Low-Temperature PEMFC

Contact Info

Product

Resources

About

Molten Carbonate Fuel Cell Performance for CO₂ Capture from Natural Gas Combined Cycle Flue Gas

Molten Carbonate Fuel Cell Performance for CO₂ Capture from Natural Gas Combined Cycle Flue Gas