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Related Concept Videos

Microbial Fuel Cells01:23

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Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
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Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals

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Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems
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Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems

Published on: May 26, 2019

Intermediate temperature solid oxide fuel cells.

Daniel J L Brett1, Alan Atkinson, Nigel P Brandon

  • 1Department of Chemical Engineering, Centre for CO2 Technology, UCL, London, UK. d.brett@ucl.ac.uk

Chemical Society Reviews
|July 24, 2008
PubMed
Summary
This summary is machine-generated.

Intermediate temperature solid oxide fuel cells (IT-SOFCs) operate between 500-750°C, enabling reduced costs and wider applications. Advances in materials and engineering are key to overcoming challenges and unlocking new opportunities for these fuel cells.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Conversion

Background:

  • High-temperature solid oxide fuel cells (SOFCs) operate at 850-1000°C, offering high efficiency in large-scale applications through integration with gas turbines.
  • This high operating temperature necessitates ceramic components and high-temperature metal alloys, limiting material choices and increasing costs.
  • A trend towards lower operating temperatures, specifically the intermediate temperature (IT) range of 500-750°C, is emerging for smaller-scale applications.

Purpose of the Study:

  • To introduce intermediate temperature solid oxide fuel cells (IT-SOFCs).
  • To explain the advantages of operating SOFCs in the 500-750°C range.
  • To discuss advances in materials chemistry and engineering enabling IT-SOFC operation and highlight new application opportunities.

Main Methods:

  • Review of materials chemistry advancements for IT-SOFCs.
  • Analysis of engineering challenges and opportunities associated with reduced operating temperatures.
  • Examination of the benefits of IT-SOFC operation, including cost reduction and corrosion mitigation.

Main Results:

  • IT-SOFC operation expands material choices and stack geometries, potentially reducing system costs.
  • Lower operating temperatures can decrease corrosion rates for stack and system components.
  • Advances in materials and engineering are making IT-SOFC operation feasible, opening new application avenues.

Conclusions:

  • Intermediate temperature operation (500-750°C) offers significant advantages for solid oxide fuel cells.
  • Materials chemistry and engineering innovations are crucial for the successful development and deployment of IT-SOFCs.
  • IT-SOFCs present new opportunities for applications beyond traditional large-scale stationary power generation.