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Related Concept Videos

Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

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Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
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What are Membranes?01:54

What are Membranes?

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A key characteristic of life is the ability to separate the external environment from the internal space. To do this, cells have evolved semi-permeable membranes that regulate the passage of biological molecules. Additionally, the cell membrane defines a cell’s shape and interactions with the external environment. Eukaryotic cell membranes also serve to compartmentalize the internal space into organelles, including the endomembrane structures of the nucleus, endoplasmic reticulum and...
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What are Membranes?01:24

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A cell's plasma membrane demarcates the cell's borders and determines the nature of its interaction with the environment. Cells exclude certain substances, take in others, and excrete some others in controlled quantities. The plasma membrane must be flexible to allow certain cells, such as red and white blood cells, to change their shape while passing through narrow capillaries. These are the more obvious plasma membrane functions. In addition, the plasma membrane's surface carries...
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The Fluid Mosaic Model01:34

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The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
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Membrane Fluidity01:23

Membrane Fluidity

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Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
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Olefin Metathesis Polymerization: Overview01:13

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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
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Updated: Nov 10, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Polymer Electrolyte Membranes.

Byungchan Bae1,2, Dukjoon Kim3

  • 1Fuel Cell Laboratory, Korea Institute of Energy Research, Daejoen 34129, Korea.

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|April 3, 2021
PubMed
Summary
This summary is machine-generated.

Polymer electrolyte membranes are crucial for electrochemical devices like fuel cells and batteries. Their versatility is expanding into new applications, driving innovation in energy storage and separation technologies.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Science

Background:

  • Polymer electrolyte membranes (PEMs) are integral to advanced electrochemical energy systems.
  • Applications span fuel cells, lithium secondary batteries, and redox flow batteries.
  • Emerging uses include electrodialysis and membrane capacitive deionization.

Discussion:

  • The unique properties of PEMs enable efficient ion transport and charge separation.
  • Material selection and membrane architecture are critical for performance optimization.
  • Understanding degradation mechanisms is key to enhancing long-term stability.

Key Insights:

  • PEMs offer a flexible and lightweight alternative to traditional liquid or solid electrolytes.
  • Tailoring polymer structures allows for tunable conductivity and selectivity.
  • Successful integration depends on interfacial compatibility with electrode and cell components.

Outlook:

  • Further research into novel polymer chemistries will unlock enhanced performance.
  • Development of cost-effective and scalable manufacturing processes is essential.
  • PEMs are poised to play a significant role in next-generation sustainable energy solutions.