A Minimal Volume Hermetic Packaging Design for High-Energy-Density Micro-Energy Systems
Abstract
Hermetic packaging is critical to the function of many microscale energy storage and harvesting devices. State-of-the-art hermetic packaging strategies for energy technologies, however, are designed for macroscale devices and dramatically decrease the fraction of active materials when applied to micro-energy systems. We demonstrated a minimal volume hermetic packaging strategy for micro-energy systems that increased the volume of active energy storage materials by 2× and 5× compared to the best lab scale microbatteries and commercial pouch cells. The minimal volume design used metal current collectors as a multifunctional hermetic shell and laser-machined hot melt tape to provide a thin, robust hermetic seal between the current collectors with a stronger adhesion to metals than most commercial adhesives. We developed the packaging using commercially available equipment and materials, and demonstrated a strategy that could be applied to many kinds of micro-energy systems with custom shape configurations. This minimal, versatile packaging has the potential to improve the energy density of current micro-energy systems for applications ranging from biomedical devices to micro-robots.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 15, 2020
- Source ID
- 10.3390/en13102492
Entities
People
- Akaash Padmanabha
- James H Pikul
- Jessica Grzyb
- Xiujun Yue
Organizations
- Defense Advanced Research Projects Agency
- National Science Foundation