Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Electrolysis03:00

Electrolysis

26.3K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
26.3K
Electrodeposition01:08

Electrodeposition

625
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
625
Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

57.1K
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,...
57.1K
Ladder Diagrams: Redox Equilibria01:30

Ladder Diagrams: Redox Equilibria

449
Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
449
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

27.3K
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...
27.3K
Chemical Reactions in Aqueous Solutions03:03

Chemical Reactions in Aqueous Solutions

60.5K
Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of chemical reactions, it becomes necessary to classify them based on the observed patterns of interaction.
60.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Cost-Effective Na<sub>4</sub>Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>P<sub>2</sub>O<sub>7</sub> Cathode Materials for Sodium-Ion Batteries in Large-Scale Energy Storage Applications.

Small science·2026
Same author

Asymmetric Ionic Liquid Modulated Anion-Reinforced Electric Double Layer for Advanced Durable Lithium Batteries.

Angewandte Chemie (International ed. in English)·2026
Same author

Role of the Fe-FeCl<sub>2</sub> contact interface in promoting redox reversibility and electrochemical kinetics in Fe/FeCl<sub>2</sub>-graphite molten salt batteries.

Chemical science·2026
Same author

Van-der-Waals-forces-modulated graphene-P-phenyl-graphene carbon allotropes.

Nature communications·2025
Same author

Activation of Cascade Pathway for Oxygen Reduction via 4f-3d Orbital Ladder-Driven Dual-Site Synergy.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025
Same author

A quasi-solid-state high-rate lithium sulfur positive electrode incorporating Li<sub>10</sub>GeP<sub>2</sub>S<sub>12</sub>.

Communications materials·2025

Related Experiment Video

Updated: Jun 24, 2025

Extending the Lifespan of Soluble Lead Flow Batteries with a Sodium Acetate Additive
08:35

Extending the Lifespan of Soluble Lead Flow Batteries with a Sodium Acetate Additive

Published on: January 7, 2019

9.2K

Anodic Electrolysis Strategy Enabled Fe/FeCl2 Electrode for Scalable Fe/FeCl2-Graphite Molten Salt Battery.

Wenlong Zhang1, Huanxin Li2,3, Xiaohui Ning1

  • 1Center for Alloy Innovation and Design (CAID), State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P. R. China.

ACS Applied Materials & Interfaces
|June 3, 2024
PubMed
Summary

A new electrochemical anodic electrolysis (EAE) method enhances the stability and scalability of iron electrodes for molten salt batteries. This breakthrough addresses key limitations, enabling more reliable large-scale energy storage solutions.

Keywords:
Fe/FeCl2-Graphite batteryanodic processelectrochemical anodic electrolysisenergy storagemolten salt batterynegative electrode

More Related Videos

Determination of Thermodynamic Properties of Alkaline Earth-liquid Metal Alloys Using the Electromotive Force Technique
12:02

Determination of Thermodynamic Properties of Alkaline Earth-liquid Metal Alloys Using the Electromotive Force Technique

Published on: November 3, 2017

13.1K
In Situ Lithiated Reference Electrode: Four Electrode Design for In-operando Impedance Spectroscopy
09:36

In Situ Lithiated Reference Electrode: Four Electrode Design for In-operando Impedance Spectroscopy

Published on: September 12, 2018

8.8K

Related Experiment Videos

Last Updated: Jun 24, 2025

Extending the Lifespan of Soluble Lead Flow Batteries with a Sodium Acetate Additive
08:35

Extending the Lifespan of Soluble Lead Flow Batteries with a Sodium Acetate Additive

Published on: January 7, 2019

9.2K
Determination of Thermodynamic Properties of Alkaline Earth-liquid Metal Alloys Using the Electromotive Force Technique
12:02

Determination of Thermodynamic Properties of Alkaline Earth-liquid Metal Alloys Using the Electromotive Force Technique

Published on: November 3, 2017

13.1K
In Situ Lithiated Reference Electrode: Four Electrode Design for In-operando Impedance Spectroscopy
09:36

In Situ Lithiated Reference Electrode: Four Electrode Design for In-operando Impedance Spectroscopy

Published on: September 12, 2018

8.8K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Fe/FeCl2-Graphite molten salt batteries offer potential for large-scale energy storage due to their long lifespan, low operating temperature, and cost-effectiveness.
  • Current limitations include the lack of scalable preparation methods and insufficient redox stability of the Fe/FeCl2 electrode, hindering practical application.

Purpose of the Study:

  • To develop a scalable and reliable preparation strategy for Fe/Fe2+ negative electrodes for Fe/FeCl2-Graphite molten salt batteries.
  • To address the redox stability issues of FeCl2 as the active substance in these batteries.

Main Methods:

  • Introduction of an electrochemical anodic electrolysis (EAE) strategy using an Al|AlCl3/NaCl/LiCl|Fe system for Fe → Fe2+ conversion.
  • Formation of a protective oxidized film on the electrode surface to prevent dissolution.
  • Validation of the EAE strategy in galvanostatic and potentiostatic processes, and in capacity-expanded batteries.

Main Results:

  • EAE-prepared Fe/Fe2+ electrodes demonstrated a stabilized capacity of 0.72 mAh/cm2 after 7000 cycles with low polarization (∼29 mV).
  • Potentiostatic EAE electrodes achieved 14 mAh after 1000 cycles with 85% retention and 98% Coulombic efficiency.
  • Scalability demonstrated with capacity-expanded batteries reaching 155.1 mAh after 1000 cycles (94% retention) and a production rate of 68.6 m2/day.

Conclusions:

  • The EAE strategy effectively enhances the redox stability and cycle life of Fe/Fe2+ electrodes for molten salt batteries.
  • This method provides a scalable and reliable approach for preparing advanced negative electrodes.
  • The successful assembly of a 0.42 Ah Fe/FeCl2-Graphite battery paves the way for commercialization of this energy storage technology.