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Updated: May 20, 2026
08:18
Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery
Published on: July 12, 2016
A reversible and higher-rate Li-O2 battery.
Zhangquan Peng1, Stefan A Freunberger, Yuhui Chen
1School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, UK.
Science (New York, N.Y.)
|July 24, 2012
Summary
Researchers developed a rechargeable lithium-air battery with a dimethyl sulfoxide electrolyte and gold electrode, achieving 95% capacity retention. This breakthrough enables highly reversible lithium peroxide formation and decomposition for improved energy storage.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Rechargeable lithium-air (Li-O(2)) batteries offer theoretical specific energy surpassing lithium-ion cells.
- Efficient battery operation relies on reversible lithium peroxide (Li(2)O(2)) formation/decomposition at the cathode.
Purpose of the Study:
- To investigate a novel electrolyte and electrode combination for stable Li-O(2) battery cycling.
- To enhance the reversibility of Li(2)O(2) cycling for practical energy storage applications.
Main Methods:
- Utilized a dimethyl sulfoxide (DMSO) electrolyte.
- Employed a porous gold electrode for cathode studies.
- Conducted electrochemical cycling tests to assess capacity retention and Li(2)O(2) behavior.
Main Results:
- Achieved 95% capacity retention over 100 cycles, demonstrating significant improvement over previous systems.
- Confirmed highly reversible Li(2)O(2) formation and decomposition using the DMSO/gold electrode configuration.
- Observed Li(2)O(2) oxidation kinetics approximately 10 times faster on gold compared to carbon electrodes.
Conclusions:
- The combination of DMSO electrolyte and porous gold electrode enables stable and reversible cycling in nonaqueous Li-O(2) batteries.
- This advancement addresses key challenges in Li-O(2) battery technology, paving the way for higher energy density storage solutions.
- Faster Li(2)O(2) oxidation kinetics suggest improved charge efficiency and power capability.
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