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Related Concept Videos

Alkali Metals03:06

Alkali Metals

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
Weak Acid Solutions04:02

Weak Acid Solutions

Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
Types of Reversible Electrodes01:24

Types of Reversible Electrodes

For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...
The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

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Updated: Jul 6, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Double perovskites as anode materials for solid-oxide fuel cells.

Yun-Hui Huang1, Ronald I Dass, Zheng-Liang Xing

  • 1Texas Materials Institute, ETC 9.102, The University of Texas at Austin, Austin, TX 78712, USA.

Science (New York, N.Y.)
|April 15, 2006
PubMed
Summary
This summary is machine-generated.

Researchers developed new double perovskite anode materials for solid-oxide fuel cells. These materials offer long-term stability and sulfur tolerance, enabling efficient use of natural gas and hydrogen fuels.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Conversion

Background:

  • Growing demand for fuel efficiency and reduced pollution drives solid-oxide fuel cell (SOFC) development.
  • Barriers to hydrogen fuel adoption necessitate alternative anode materials for SOFCs operating with natural gas.

Purpose of the Study:

  • To identify and characterize novel anode materials for SOFCs capable of operating at 650-1000°C with natural gas.
  • To assess material stability, sulfur tolerance, and electrochemical performance.

Main Methods:

  • Synthesis and characterization of double perovskites with the formula Sr2Mg(1-x)MnxMoO(6-delta).
  • Evaluation of material stability under operating conditions.
  • Testing of single-cell performance using hydrogen and methane as fuels.

Main Results:

  • Identified Sr2Mg(1-x)MnxMoO(6-delta) as a promising double perovskite anode material.
  • Demonstrated long-term stability and tolerance to sulfur impurities.
  • Achieved superior single-cell performance with both hydrogen and methane fuels.

Conclusions:

  • The developed double perovskites are suitable for SOFC applications requiring natural gas or hydrogen fuel.
  • These materials address key challenges in SOFC technology, paving the way for wider adoption.