摘要:
An alkaline dry battery including nickel oxyhydroxide and manganese dioxide as positive electrode active materials. The nickel oxyhydroxide is a solid solution including at least manganese and cobalt. The content of the manganese is 5.2×10−2 to 7.5×10−2 moles per mole of the nickel oxyhydroxide, and the content of the cobalt is 0.5×10−2 to 2.0×10−2 moles. The alkaline dry battery maintains excellent heavy-load discharge characteristics, exhibits suppressed polarization during heavy-load pulse discharge to improve the operational stability of digital devices, and has high reliability with respect to leakage resistance and safety under short-circuit conditions.
摘要:
An alkaline primary battery includes a positive electrode containing at least nickel oxyhydroxide as a positive electrode active material, a negative electrode containing zinc or a zinc alloy as a negative electrode active material, a separator arranged between the positive electrode and the negative electrode, and an alkaline electrolyte. The nickel oxyhydroxide contains at least manganese and calcium as elements forming solid solution or eutectic crystal with the nickel oxyhydroxide.
摘要:
A method for producing a coated nickel hydroxide powder suitable as a cathode active material for alkaline secondary battery includes the steps of: dispersing a nickel hydroxide powder in water to prepare a suspension, an aqueous alkali solution to the suspension with stirring to keep a pH of the suspension at 8 or higher as measured at 25° C., and supplying an aqueous cobalt salt solution to the suspension to coat a surface of each particles of the nickel hydroxide powder with cobalt hydroxide crystallized out by neutralization.
摘要:
A coated nickel hydroxide powder suitable as a cathode active material for alkaline secondary battery includes nickel hydroxide powder particles which have a coating layer thereon of preferably cobalt hydroxide or cobalt oxyhydroxide.
摘要:
A coated nickel hydroxide powder suitable as a cathode active material for alkaline secondary battery includes nickel hydroxide powder particles which have a coating layer thereon of preferably cobalt hydroxide or cobalt oxyhydroxide.
摘要:
A method for producing a coated nickel hydroxide powder suitable as a cathode active material for alkaline secondary battery includes the steps of: dispersing a nickel hydroxide powder in water to prepare a suspension, an aqueous alkali solution to the suspension with stirring to keep a pH of the suspension at 8 or higher as measured at 25° C., and supplying an aqueous cobalt salt solution to the suspension to coat a surface of each of particles of the nickel hydroxide powder with cobalt hydroxide crystallized out by neutralization.