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Related Concept Videos

Transport Number01:31

Transport Number

The transport number is the fraction of the total current carried by an ion in an electrolyte solution. It is defined as the ratio of the current carried by a specific ion to the total current flowing through the solution. The transport number, t, is central to understanding ionic mobility, which describes how fast an ion moves under the influence of an electric field. This link connects the physical behavior of ions in solution to the chemical processes that occur during electrochemical...
Facilitated Transport01:19

Facilitated Transport

The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In  facilitated transport, also known as facilitated diffusion, molecules and ions travel across a membrane via...
Facilitated Transport01:19

Facilitated Transport

The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In facilitated transport, also known as facilitated diffusion, molecules and ions travel across a membrane via...
Facilitated Transport01:19

Facilitated Transport

The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In  facilitated transport, also known as facilitated diffusion, molecules and ions travel across a membrane via...
Primary Active Transport01:29

Primary Active Transport

In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they would not...
Primary Active Transport01:47

Primary Active Transport

In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they...

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  1. Home
  3. Ultrafast Hopping Transfer Enables High-anion Conduction.
  1. Home
  3. Ultrafast Hopping Transfer Enables High-anion Conduction.

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Fast Micro-iontophoresis of Glutamate and GABA: A Useful Tool to Investigate Synaptic Integration
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Ultrafast Hopping Transfer Enables High-Anion Conduction.

Tian-Tian Jing1,2, Chong Han3, Yan-Song Xu1,2

  • 1College of Chemistry, Huazhong Agricultural University, Wuhan 430070, P. R. China.

Journal of the American Chemical Society
|June 19, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Dual-ion batteries (DIBs) utilize anion intercalation for high voltage and safety. Researchers discovered an ultrafast anion-hopping mechanism, enabling rapid charge transport and over 50,000 cycles.

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Published on: February 19, 2013

Area of Science:

  • Electrochemistry
  • Materials Science
  • Energy Storage

Background:

  • Dual-ion batteries (DIBs) offer high voltage (>5.0 V), safety, and cost-effectiveness due to anion intercalation chemistry.
  • Anion transport mechanisms in DIBs are underexplored, unlike cation diffusion in conventional batteries.

Purpose of the Study:

  • To investigate the charge transport behavior of anions in DIBs.
  • To understand how ionic radius and solvation dynamics influence anion diffusion kinetics.
  • To optimize electrolyte and separator design for enhanced DIB performance.

Main Methods:

  • Identification of an ultrafast anion-hopping mechanism.
  • Engineering of localized high-concentration electrolytes (LHCE) to reduce anion-solvent affinity.
  • Utilizing wettable cellulose separators to suppress solvent co-intercalation.
  • Construction of an inorganic-rich cathode-electrolyte interphase (CEI).

    • Main Results:

    • An ultrafast anion-hopping mechanism was identified, driven by large ionic radius and charge delocalization.
    • The developed LHCE and cellulose separator strategy effectively suppressed solvent co-intercalation.
    • Rapid anion desolvation and high-rate kinetics were achieved, leading to a reversible capacity of 69.10 mAh g-1 at 200C.
    • The DIBs demonstrated exceptional cycle life, exceeding 50,000 cycles.

    Conclusions:

    • The study elucidates the anion transport mechanism in DIBs, highlighting the role of solvation microenvironment.
    • The synergistic strategy of LHCE and cellulose separators enables high-rate anion intercalation.
    • Findings provide insights for designing advanced electrolytes for high-voltage, fast-charging DIBs and other energy storage systems.