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Related Concept Videos

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...
Ionic Association01:28

Ionic Association

The ionic association is the association of oppositely charged ions in an electrolyte solution to form ion pairs. Bjerrum defined ion pairs as two oppositely charged ions whose electrostatic attraction exceeds the thermal energy of the system, typically expressed as 2kT. Electrostatic attraction depends on ionic charge, separation distance, and the dielectric constant of the medium. Thermal energy, represented by kT, reflects the tendency of ions to move independently due to molecular motion.
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current passing...

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Related Experiment Video

Updated: Jul 15, 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

A Rigid-Flexible Polyinterface Enabling Molecular-Level Dual-Ion Regulation for Ultrastable Lithium Metal Batteries.

Gaochuang He1,2,3, Jianwei Guo1, Lingxi Yang2,3

  • 1School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China.

Advanced Materials (Deerfield Beach, Fla.)
|July 14, 2026
PubMed
Summary

Researchers developed a novel polymer interphase for lithium metal batteries. This artificial interphase enables dual-ion regulation, significantly improving battery stability and performance for high-energy applications.

Keywords:
anion‐π interactionartificial SEIdual‐ion regulationgradient coordinationhigh‐loading cathodeslithium metal anodespolyinterface

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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

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Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy
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Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

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Last Updated: Jul 15, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
11:04

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

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Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy
07:20

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Published on: January 20, 2023

Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Lithium metal anodes are crucial for high-energy batteries but suffer from dendrite growth and parasitic reactions.
  • Existing artificial solid-electrolyte interphases often fail to manage both cation and anion behavior at the molecular level.

Purpose of the Study:

  • To design and synthesize a polymeric artificial interphase for synergistic dual-ion regulation in lithium metal batteries.
  • To investigate the molecular mechanisms behind the interphase's protective effects.

Main Methods:

  • Rational design of a poly-fluorotoluene-triglycoldimercaptan (PFT) polymer with specific functional groups.
  • Electrochemical testing of PFT-modified lithium metal anodes in symmetric and full cells.
  • Spectroscopic and computational analyses to elucidate the interphase structure and ion transport.

Main Results:

  • The PFT interphase demonstrated gradient Li+ coordination and effective TFSI- anion trapping via anion-π interactions.
  • In-situ formation of a stable LiF-Li2S-rich inorganic solid-electrolyte interphase.
  • Exceptional cycling stability in Li metal symmetric cells (>4000 h) and high-performance in LiFePO4 and NCM811 full cells.

Conclusions:

  • The developed PFT interphase enables effective dual-ion regulation, overcoming limitations of previous designs.
  • This molecular design principle offers a pathway for creating highly stable and high-performance lithium metal batteries.
  • The PFT-based anodes show significant practical viability for next-generation energy storage.