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Related Experiment Video

Updated: Feb 4, 2026

In Ovo Electroporation in the Chicken Auditory Brainstem

In Ovo Electroporation in the Chicken Auditory Brainstem

Published on: June 9, 2017

Bio-waste chicken eggshells to store energy.

Manickam Minakshi¹, Heidy Visbal, David R G Mitchell

¹Engineering and Information Technology, Murdoch University, WA 6150, Australia. minakshi@murdoch.edu.au.

Dalton Transactions (Cambridge, England : 2003)

|October 16, 2018

Summary

Chicken eggshells, rich in calcium carbonate (CaCO3), are repurposed as electrodes for energy storage in lithium-ion capacitors. This sustainable approach demonstrates promising electrochemical performance comparable to activated carbon.

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Area of Science:

Materials Science
Electrochemistry
Sustainable Energy Storage

Background:

Bio-waste, specifically chicken eggshells, presents a significant disposal challenge.
Eggshells are primarily composed of calcium carbonate (CaCO3), a material with potential electrochemical applications.
Developing cost-effective and sustainable electrode materials is crucial for advanced energy storage devices.

Purpose of the Study:

To investigate the feasibility of using chicken eggshell-derived calcium carbonate (CaCO3) as an electrode material for energy storage.
To evaluate the electrochemical performance, including capacitance and cycle stability, of CaCO3 electrodes in Li-ion capacitors.
To explore a sustainable method for valorizing bio-waste into functional energy storage components.

Main Methods:

Chicken eggshell powders were processed and utilized as electrodes against a metallic lithium anode in a non-aqueous electrolyte.
Electrochemical performance was assessed through discharge capacitance measurements and long-term cycling tests.
The electrochemical behavior was characterized, including its non-faradaic nature and comparison with activated carbon (AC).

Main Results:

The eggshell-derived CaCO3 electrode exhibited an initial discharge capacitance of 232 F g-1 and a reversible capacitance of 120 F g-1.
The system demonstrated excellent capacitance retention, maintaining 92% over 1000 cycles, comparable to commercial activated carbon.
CaCO3 displayed non-faradaic behavior and operated effectively within a 4 V electrochemical stability window.

Conclusions:

Chicken eggshell-derived CaCO3 is a viable and sustainable electrode material for Li-ion capacitors.
This application effectively reduces bio-waste while adding value through energy storage capabilities.
Further research into the material's electrochemical and physical properties is recommended to optimize performance and facilitate widespread adoption.