Electrochemical Behavior of Microscopic Secondary Batteries

Paper #:
  • 1999-01-2685

Published:
  • 1999-08-02
Citation:
Harb, J., Holladay, J., Humble, P., Barksdale, R. et al., "Electrochemical Behavior of Microscopic Secondary Batteries," SAE Technical Paper 1999-01-2685, 1999, https://doi.org/10.4271/1999-01-2685.
Pages:
7
Abstract:
This paper describes electrochemical behavior of microscopic batteries based on both the lithium/ion and Ni/Zn couples. These batteries are being developed for use in MEMS devices and other microelectronics, especially remote, autonomous sensors. Many of these applications require a combination of long cycle life, moderate energy storage capability, and periodic high power output. Batteries have been made using high-volume, lowcost, fabrication techniques, described in prior publications. These batteries have been built and evaluated for their electrochemical performance. Power output from both types of cells is impressive; current densities of 80 - 100 and 20 - 50 mA/cm2 have been observed, for discharges of several seconds, for Ni/Zn and Li/Ion cells, respectively. Much higher current densities are observed for discharges lasting a few milliseconds, such as would be needed in many applications. Specific capacities of 2 - 4 C/cm2 are also obtained. These and other electrochemical behaviors will be discussed.
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