Lithium/carbon monofluoride (Li/CFx): a new pacemaker battery

Area of Science:

• Biomedical Engineering
• Materials Science
• Electrochemistry

Background:

• Pacemaker technology advancements require batteries with higher current densities and energy density.
• Current lithium/iodine batteries face limitations in meeting the demands of advanced pacemaker functions.
• There is a need for improved battery systems that are compatible with miniaturized medical devices.

Purpose of the Study:

• To evaluate the lithium/CFx battery system as a potential alternative for advanced pacemaker applications.
• To assess the performance of lithium/CFx batteries in delivering high current densities at useful voltages.
• To determine the suitability of lithium/CFx batteries for integration into next-generation pacemakers.

Main Methods:

• Design and fabrication of lithium/CFx battery cells.
• Testing of battery performance, including current delivery and voltage stability.
• Evaluation of material compatibility, specifically with titanium casing.
• Comparison of volumetric energy density and weight with existing lithium/iodine systems.

Main Results:

• The lithium/CFx system demonstrated the ability to deliver currents in the milliampere range without significant voltage drop.
• Compatibility with titanium casing was confirmed, enabling a 50% weight reduction compared to lithium/iodine batteries of the same size.
• The developed cells showed suitability for advanced pacemaker applications based on laboratory testing.

Conclusions:

• The lithium/CFx battery system presents a viable and advantageous alternative for advanced pacemaker power sources.
• This technology addresses the need for higher power capabilities and reduced device weight in modern pacemakers.
• Further development and integration of lithium/CFx batteries can support the evolution of miniaturized and high-performance medical implants.