Chemistry: electrical current producing apparatus – product – and – With measuring – testing – or indicating means – For charge or liquid level
Patent
1992-02-14
1994-02-22
Chaudhuri, Olik
Chemistry: electrical current producing apparatus, product, and
With measuring, testing, or indicating means
For charge or liquid level
429 90, H01M 200
Patent
active
052885631
ABSTRACT:
A device for measuring hydrogen ion concentration in an aqueous solution includes a sensing means for sensing hydrogen ion concentration and a reference electrode. The sensing means may be an ion-sensitive field-effect transistor or a hydrogen ion electrode. The sensing means has an ion-sensitive layer composed of tantalum nitride, niobium nitride, zirconium nitride or niobium oxide. When the sensing device is built integrally into a lead-acid battery, the state of charge-discharge of the battery can be effectively known.
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D. Ammann et al., Anal. Chem., 53, 2267, 1981 "Neutral Carrier Based Hydrogen Ion Selective Microelectrode".
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Wakida et al., Preprint for the 58th Spring Meeting of Chem. Soc. Jap., 1,31G17, p. 360, 1989.
J. L. Weininger et al., J. Electrochem. Soc., 129, 2409, 1982 "State-of-Charge Indicator for Lead-Acid Batteries".
Matsuo et al., Oyo Butsuri, 49, 586, 1980 "Field Effect Transistor Type Chemical Sensor".
Fujita Yuko
Saito Satoshi
Chaudhuri Olik
Everhart C.
Japan Storage Battery Co., Ltd.
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