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Development of Magnesium Anode-Based Transient Primary Batteries.

Jazer Jose H Togonon^1,2, Eugene A Esparcia¹, Julie Anne D Del Rosario^1,2

¹Laboratory of Electrochemical Engineering (LEE), Department of Chemical Engineering, College of Engineering, University of the Philippines Diliman, Quezon City, 1101, Philippines.

|April 8, 2021

Summary

Researchers developed high-performance biodegradable transient batteries using common metals like magnesium and copper. The Mg-Cu anodized battery demonstrated excellent discharge performance, paving the way for advanced biodegradable electronics.

Keywords:

anodization process magnesium metal oxide cathodes transient batteries

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Area of Science:

Materials Science
Electrochemistry
Biomedical Engineering

Background:

Biodegradable primary batteries, or transient batteries, are crucial for autonomous biodegradable electronic devices.
Developing high-performance, functional transient batteries is an ongoing challenge.

Purpose of the Study:

To investigate magnesium, copper, iron, and zinc as materials for biomedical transient electronic devices.
To evaluate different full cell combinations using these metals and phosphate buffered saline (PBS) as an electrolyte.

Main Methods:

Metals (Mg, Cu, Fe, Zn) were tested in various full cell configurations with PBS electrolyte.
Cathodes were formed by galvanostatic anodization of metal foils.
Electrochemical measurements were performed to assess full cell battery performance.

Main Results:

The Mg-Cu anodized chemistry achieved the highest power density at 0.99 mW/cm².
This chemistry showed a nominal operating voltage of 1.26 V initially, then 0.63 V.
Mg-Cu anodized exhibited the best discharge performance with a specific capacity of 2.94 mAh/cm².

Conclusions:

The Mg-Cu anodized transient battery demonstrates promising performance for biodegradable electronics.
This research contributes to the advancement of high-performance, functional biodegradable electronic devices.