Metal diphthalocyanine electrochromic displays and electrolytes

Details Metal diphthalocyanine electrochromic displays and electrolytes Metal diphthalocyanine electrochromic displays and electrolytes

1981-10-02

1984-01-24

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

2524081, 252600, G02F 117

Patent

active

044272677

ABSTRACT:
The lifetime of a metal diphthalocyanine electrochromic display can be substantially extended by employing a predominantly non-aqueous low hydroxyl ion electrolyte. A preferred electrolyte solvent is ethylene glycol and preferred conductivity salts are tetraethyl ammonium fluoride and sodium chloride. In the case of sodium chloride, conductivity is improved by the addition of up to 25% water to the electrolyte.

REFERENCES:
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patent: 4210390 (1980-07-01), Yaguchi
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patent: 4371236 (1983-02-01), Nicholson
patent: 4376569 (1983-03-01), Barltrop et al.
C.A., vol. 91, 166364a (1979).
Moskalev, P. N., et al., Opt. Spektrosk, vol. 29(2), pp. 414-415 (1970).
C.A., vol. 95, 105189h (1981), Citing Nicholson, M., et al., J. Electrochem. Soc., vol. 128(8), pp. 1740-1743 (1981).
"Effect of the Electrode Potential on the Absorption Spectrum of a Rare Earth Diphthalocyanine Layer," Optika I Spectroskopy vol. 29, p. 220, 1970.

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