Manufacture of mesoscale energy storage systems by laser-direct write

Craig B. Arnold, Heungsoo Kim, Michael Ollinger, Thomas E. Sutto, Alberto Piqué

Research output: Contribution to journalConference article

4 Scopus citations

Abstract

The development of micro power systems, on the mm size scale, is necessary for emerging technologies in small, portable micro-electronic device applications. Direct-write processes are used to produce the high-power, low-power, and recharging elements of such mesoscale micro power systems. Successful fabrication of alkaline and lithium based micro-batteries, micro-ultracapacitors, and dye-sensitized micro-solar cells are possible on various low processing temperature and flexible substrates using laser direct-write approaches that are ideally suited for the many different structurally complex electrochemical materials used in these systems. Increased areal energy density is realized by depositing thick layers > 10 μm, while maintaining patterns as small as 2 mm2. Micro-ultracapacitors exhibit high power densities > 250 mW/cm2, while primary alkaline microbatteries exhibit open circuit potentials of 1.5 V with high capacities and discharge currents up to 1 mA. Secondary LiCoO2 and LiMn 2O4 based microbatteries employing a novel nanocomposite solid-state electrolyte exhibit open circuit potentials > 4 V and have shown multiple recharging cycles without loss of capacity. Results of the different systems will be discussed with particular emphasis on the combination of elements to produce hybrid micro power systems.

Original languageEnglish (US)
Article number90
Pages (from-to)555-563
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5662
DOIs
StatePublished - Dec 1 2004
EventFifth International Symposium on Laser Precision Microfabrication - Nara, Japan
Duration: May 11 2004May 14 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Laser direct write
  • MEMS
  • Micro power
  • Microbattery
  • Photovoltaics
  • Ultracapacitor

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