Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Batteries and Fuel Cells

Batteries and Fuel Cells

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...

Voltaic/Galvanic Cells

Voltaic/Galvanic Cells

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,...

You might also read

Related Articles

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

Sort by

Same author

Accelerating Charge-Transfer Kinetics via Triggering Electron Spin Polarization in Open-Hollow MoS<sub>2</sub> Nanospheres for Ultrafast Lithium Storage.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Balanced-state electrolytes overcome crossover in vanadium redox flow batteries.

Nature communications·2026

Same author

A scalable and long-cycle-life 600 Wh kg<sup>-1</sup> solid-state lithium metal pouch cell.

Nature communications·2025

Same author

Revealing Robust Atomic Configurations of the Ligand-Assisted Synthesized High-Entropy PtIrFeCoNiCu Nano-Intermetallic Catalysts During Oxygen Reductions in Fuel Cells.

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

Same author

Puzzle-like molecular assembly of non-flammable solid-state polymer electrolytes for safe and high-voltage lithium metal batteries.

Nature communications·2025

Same author

Air-Stable Ferrocene-Based Catholytes for Improved Performance in pH-Neutral Aqueous Organic Redox Flow Batteries.

Journal of the American Chemical Society·2025

Same journal

Synergistic Integration of Intermediate Adsorption and Hydrogen Supply to Boost Nitrate Electroreduction to Ammonia Performance via Anchoring Nickel on Monolithic Copper Nanocone Arrays.

Small methods·2026

Same journal

In Situ Zn-Doped Prussian Blue Analogues as High-Rate Cathodes for Wide-Temperature Sodium-Ion Batteries.

Small methods·2026

Same journal

Correction to "Porous Graphene Produced by Carbothermal Shock for Green Electromagnetic Interference Shielding in Both Microwave and Terahertz Bands".

Small methods·2026

Same journal

Correction to "PruEV-AI: A Simple Approach Combines Urinary Extracellular Vesicle Isolation With AI-Assisted Analysis for Prostate Cancer Diagnosis".

Small methods·2026

Same journal

Molecular-Nano Integrated Design of Hydrogel Hybrid Membranes for Oily Organic Wastewater Treatment.

Small methods·2026

Same journal

Dielectric-Chemical Interfacial Engineering Toward Improved Efficiency and Reverse-Bias Stability for Air-Processed Perovskite Photovoltaics.

Small methods·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Aug 31, 2025

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

Sponge-Like Microfiber Electrodes for High-Performance Redox Flow Batteries.

Jing Sun¹, Yuhan Wan¹, Qinping Jian¹

¹Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, 999077, China.

|August 25, 2022

Summary

This summary is machine-generated.

Researchers developed advanced carbon microfiber electrodes for redox flow batteries. These electrodes offer high surface area and permeability, boosting battery efficiency and longevity for energy storage applications.

Keywords:

cross-linking electrospinning fiber diameter porous carbon fibers redox flow batteries specific surface area

More Related Videos

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Published on: September 29, 2020

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

Related Experiment Videos

Last Updated: Aug 31, 2025

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Published on: September 29, 2020

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Developing high-performance redox flow batteries requires electrodes with large specific surface area and high flow permeability.
Current electrode fabrication methods face challenges in balancing these properties.

Purpose of the Study:

To fabricate novel sponge-like microfiber carbon electrodes for enhanced redox flow battery performance.
To investigate the electrochemical properties and long-term stability of these electrodes.

Main Methods:

Electrospinning of cross-linked poly(vinyl alcohol)-lignin-polytetrafluoroethylene precursors.
Oxidation and pyrolysis of the electrospun fibers to form carbon microfibers.
Characterization of surface area, fiber diameter, and macropore size.
Testing in a vanadium redox flow battery system.

Main Results:

Achieved a specific surface area of 853.6 m² g⁻¹ with fiber diameters of 5-7 µm and macropores of ≈26.8 µm.
Vanadium redox flow battery demonstrated 79.1% energy efficiency at 400 mA cm⁻².
Exhibited excellent capacity retention of 99.94% over 2000 cycles.

Conclusions:

The developed sponge-like porous carbon microfibers are highly effective for redox flow batteries.
This fabrication strategy offers a promising approach for advanced energy storage systems.
The electrodes provide a superior balance of surface area and permeability for efficient battery operation.