Adams & Wilks
Alkaline battery without mercury and electronic apparatus powered thereby
An alkaline battery comprises a negative electrode having an active material comprised of mercuryless zinc powder containing a gelling agent. In one embodiment, the alkaline battery comprises a current collector having an outermost surface coated with a layer of zinc or a metal having a hydrogen overvoltage higher than that of zinc, and an electrolyte containing one or more compounds selected from the group consisting of an indium compound, lead oxide; a hydroxide of alkaline earth metal and a surfactant having polyethylene oxide. In another embodiment, the negative electrode active material contains one or more species of materials selected from the group consisting of an indium compound, lead oxide, a hydroxide of alkaline earth metal and a surfactant having polyethylene oxide, and a current collector having an outermost surface coated with a layer of zinc or a metal having a hydrogen overvoltage higher than that of zinc. An improved alkaline battery is achieved which does not pose environmental problems, and which corrosion of the zinc powder of the battery is suppressed, and in which a good discharge performance of the battery is maintained.
Seiko Instruments Inc.
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inventional inventional inventional inventional additional inventional inventional inventional inventional
Shunji Tsugio Hideo
Watanabe Sakai Sakamoto