Related Experiment Video
Updated: Jul 19, 2025
08:18
Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery
Published on: July 12, 2016
11.5K
Efficient Biorenewable Membranes in Lithium-Oxygen Batteries.
Julia Amici1, Giorgio Banaudi1, Mattia Longo1
1Department of Applied Science and Technology, Politecnico di Torino, c.so Duca degli Abruzzi 24, 10129 Torino, Italy.
Polymers
|August 12, 2023
Summary
Researchers developed a novel chitosan-based membrane to protect lithium metal anodes in lithium-oxygen batteries. This protective layer enhances battery lifespan and stability, crucial for efficient energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Science
Background:
- Lithium-oxygen batteries offer high energy density but face challenges with lithium metal anode reactivity and oxidative environments.
- Developing stable and efficient energy storage is critical for a reduced carbon energy landscape.
Purpose of the Study:
- To create a green, protective membrane for lithium anodes in lithium-oxygen batteries.
- To improve the stability and cycle life of lithium-oxygen battery systems.
Main Methods:
- Chitosan, a biopolymer, was methacrylated and UV-crosslinked to form protective membranes.
- These membranes were activated and used to protect lithium metal anodes in lithium-oxygen cells.
Main Results:
- Protected lithium cells demonstrated higher full discharge capacity and improved stability.
- Post-mortem analyses confirmed chitosan's role in mitigating degradation.
- Protected cells achieved over 40 cycles with 100% coulombic efficiency, doubling the lifespan of bare lithium cells.
Conclusions:
- Methacrylated chitosan membranes offer an effective and sustainable solution for protecting lithium anodes.
- This approach significantly enhances the performance and longevity of lithium-oxygen batteries.
- The study highlights the potential of bio-based materials in advanced energy storage applications.
Related Concept Videos
03:12Batteries and Fuel Cells
27.6K
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...
27.6K
01:15Potentiometry: Membrane Electrodes
632
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
632