Chemistry: electrical current producing apparatus – product – and – With measuring – testing – or indicating means – For charge or liquid level
Patent
1989-07-18
1990-04-17
Kalafut, Stephen J.
Chemistry: electrical current producing apparatus, product, and
With measuring, testing, or indicating means
For charge or liquid level
429218, 350357, H01M 212
Patent
active
049179730
ABSTRACT:
There is disclosed a secondary battery wherein either one of positive electrode and negative electrode elements is made of an active material, the color of which is changed according to a voltage between these electrodes and wherein= a window is formed for observing the color change of the electrode.
Further, an electrochromic display device is disclosed in which a working electrode is made of a pyrolytic carbonaceous material which is obtained by thermal decomposition of a hydrocarbon compound at a low temperature of about 1,000.degree. C.
REFERENCES:
patent: 3955879 (1976-05-01), Witzke et al.
patent: 4522901 (1985-06-01), Shacklette
Pflurer et al, "Aspects of Alkali Metal Intercalation and Deintercalation in Highly Oriented Pyrolytic Graphite", Synthetic Metals, v. 3, pp. 27-39, 1989.
Pfluger et al, "Discovery of a New Reversible Electrochromic Effect" Applied Physics Letters, vol. 35, No. 10, pp. 771-772, Nov. 15, 1979.
Nakajima Shigeo
Suzuki Tomonari
Wada Hiroshi
Yoshida Masaru
Yoshimoto Yoshikazu
Kalafut Stephen J.
Sharp Kabushiki Kaisha
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