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

Redox Equilibria: Overview01:23

Redox Equilibria: Overview

1.5K
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
1.5K
Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

63.1K
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,...
63.1K
Electrolysis03:00

Electrolysis

30.2K
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...
30.2K
Electrochemistry: Overview01:04

Electrochemistry: Overview

3.5K
Electrochemistry is the branch of chemistry that studies the relationship between electrical quantities and chemical reactions, particularly oxidation and reduction. Oxidation is the loss of electrons from a substance, whereas reduction refers to the gain of electrons. A substance with a strong electron affinity is called an oxidizing agent (oxidant), and a reducing agent (reductant) is a species that donates electrons. Oxidation and reduction processes are pivotal to electrochemical reactions,...
3.5K
Balancing Redox Equations02:58

Balancing Redox Equations

61.6K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
61.6K
Refrigerators and Heat Pumps01:07

Refrigerators and Heat Pumps

3.0K
Refrigerators or heat pumps are heat engines operating in a reverse direction. For a refrigerator, the focus is on removing heat from a specific area, whereas, for a heat pump, the focus is on dumping heat into one particular area. A refrigerator (or heat pump) absorbs heat Qc from the cold reservoir at Kelvin temperature Tc and discards heat Qh to the hot reservoir at Kelvin temperature Th, while work W is done on the engine’s working substance.
A household refrigerator removes heat from...
3.0K

You might also read

Related Articles

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

Sort by
Same author

The Efficiencies and Products of Dilute Methane Oxidation in a Chlorine Radical Photoreactor.

Environmental science & technology·2026
Same author

A Humidity-Tolerant Photocatalyst for Methane Removal.

Environmental science & technology·2026
Same author

Simultaneous Characterization of In-Plane and Cross-Plane Resistivities in Highly Anisotropic 2D Layered Heterostructures.

ACS nano·2024
Same author

Spin disorder control of topological spin texture.

Nature communications·2024
Same author

Geospatial mapping of distribution grid with machine learning and publicly-accessible multi-modal data.

Nature communications·2023
Same author

Imaging the electron charge density in monolayer MoS<sub>2</sub> at the Ångstrom scale.

Nature communications·2023
Same journal

MT-MRI for detection of renal interstitial fibrosis in renovascular disease.

Scientific reports·2026
Same journal

Detection of underground objects from GPR data using a lightweight YOLO-based approach.

Scientific reports·2026
Same journal

Early systemic inflammatory-metabolic trajectory phenotypes are associated with survival outcomes in metastatic renal cell carcinoma treated with nivolumab.

Scientific reports·2026
Same journal

Water balance components in a dry-seeded rice-wheat system: Untangling the effects of tillage and mulching practices.

Scientific reports·2026
Same journal

Topological approaches to quantum tensor train compression via ZX-calculus and SVD.

Scientific reports·2026
Same journal

determinants of flood impacts and adaptive capacity among market vendors in Walukuba-Masese, Jinja city, Uganda.

Scientific reports·2026
See all related articles

Related Experiment Video

Updated: Jan 19, 2026

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
09:09

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation

Published on: February 5, 2020

7.6K

Electrochemical Redox Refrigeration.

Ian S McKay1, Larissa Y Kunz1, Arun Majumdar2,3

  • 1Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.

Scientific Reports
|September 28, 2019
PubMed
Summary
This summary is machine-generated.

A novel electrochemical refrigerator utilizes the Fe(CN)63-/4- redox reaction for efficient cooling. This liquid-based system offers higher entropy change than solid thermoelectric materials and avoids Joule heating issues.

More Related Videos

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
07:55

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Published on: July 20, 2021

11.7K
Experimental System of Solar Adsorption Refrigeration with Concentrated Collector
07:18

Experimental System of Solar Adsorption Refrigeration with Concentrated Collector

Published on: October 18, 2017

15.0K

Related Experiment Videos

Last Updated: Jan 19, 2026

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
09:09

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation

Published on: February 5, 2020

7.6K
Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
07:55

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Published on: July 20, 2021

11.7K
Experimental System of Solar Adsorption Refrigeration with Concentrated Collector
07:18

Experimental System of Solar Adsorption Refrigeration with Concentrated Collector

Published on: October 18, 2017

15.0K

Area of Science:

  • Electrochemistry
  • Materials Science
  • Thermodynamics

Background:

  • The Fe(CN)63-/4- redox couple exhibits significant conformational entropy change.
  • Electrochemical refrigerators offer potential advantages over traditional Peltier coolers.

Purpose of the Study:

  • To investigate the feasibility of using the Fe(CN)63-/4- redox reaction for electrochemical refrigeration.
  • To evaluate the cooling performance and identify key parameters for optimizing such devices.

Main Methods:

  • Utilized infrared microscopy to visualize thermal aspects of the Fe(CN)63-/4- redox reaction.
  • Compared experimental cooling estimates with theoretical calculations under varying electrolyte flow conditions.

Main Results:

  • Achieved small temperature differences (~50 mK) in a single cell, with no significant enhancement from electrolyte flow.
  • Demonstrated a high cooling power density (~0.5 W/cm3) when normalized to electrode volume.
  • Proposed non-dimensional figures of merit for identifying optimal electrochemical redox species.

Conclusions:

  • The Fe(CN)63-/4- redox system shows promise for compact electrochemical refrigerators.
  • Electrolyte advection did not enhance cooling in the tested configuration, but high power density is achievable.
  • Further research into redox species and device design is needed to maximize cooling efficiency.