Self-filling wet electrochemical cells by laser processing

Details Self-filling wet electrochemical cells by laser processing Self-filling wet electrochemical cells by laser processing

2004-06-09

2008-09-23

Alanko, Anita K (Department: 1792)

Etching a substrate: processes

Forming or treating material useful in a capacitor

C216S039000, C216S080000, C216S097000, C219S121690, C029S623100, C029S623500

Reexamination Certificate

active

07427359

ABSTRACT:
A method of preparing high capacity hydrous ruthenium oxide micro-ultracapacitors. A laser direct-write process deposits a film of hydrous ruthenium oxide in sulfuric acid under ambient temperature and atmospheric conditions. A dual laser process combining infrared and ultraviolet light is used for fabricating a complete wet electrochemical cell in a single processing step. Ultraviolet laser micromachining is used to tailor the shape and size of the deposited material into planar electrodes. The micro-ultracapacitors have improved size, weight, and cost efficiency and exhibit high specific power and high specific energy.

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C.B. Arnold et al, “Direct-write Planar Microultracapacitors by Laser Engineering”, Journal of the Electrochemical Society, 150 (5) A571-A575 (2003), Mar. 2003.
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