Rechargeable Micro-Batteries

Technical Report · Fri Sep 01 04:00:00 EDT 2023

DOI:https://doi.org/10.2172/2003367· OSTI ID:2003367

Wu, Bingbin ^[1]; Baar, Kevin T. ^[1]; Lu, Jun ^[1]; Deng, Daniel Z. ^[2]; Xiao, Jie ^[1]

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1. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
2. Fluor Daniel Hanford, Inc., Richland, WA (United States)

The quest for efficient power sources for small sensors has led to a growing interest in rechargeable micro-batteries, offering the potential to harness energy from various sources for extended periods. This project delves into a multifaceted project aimed at enhancing the performance and viability of rechargeable micro-batteries in this context. The Pacific Northwest National Laboratory (PNNL) has leveraged its expertise in primary micro-battery development, evolving into a software-driven approach for designing cylindrical micro-batteries. This project addresses the cycle life issue through innovative cell design, electrode optimization, and electrolyte refinement. A case study of the MB1842 rechargeable micro-battery demonstrates the promising outcomes of these advancements, showcasing a capacity of 0.32 mAh at ~1C (0.35 mA) and remarkable cycle performance, extending the cycle life to 510-570 cycles at 80% end-of-life (EOL), 710-760 cycles at 70% EOL and 840-940 cycles at 60% EOL, thereby ensuring a service life of 10 years for these rechargeable micro-batteries. This endeavor represents a significant stride towards unlocking the full potential of rechargeable micro-batteries, paving the way for their widespread application in small sensor technologies. The outcome from this project also successfully supports the award of a new project: 80621 - Self-Powered Modular Acoustic Telemetry System with Sensing.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 2003367
• Report Number(s): PNNL--34875
• Country of Publication: United States
• Language: English

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