초록 ▼

A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an

A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.

대표청구항 ▼

The invention claimed is: 1. A compressed nickel compound anode produced by a process comprising: compression molding an anode mixture comprising: nickel compound grains, wherein said nickel compound grains are composed of ball-shaped grains, substantially ball-shaped grains, or an aggregation of b

The invention claimed is: 1. A compressed nickel compound anode produced by a process comprising: compression molding an anode mixture comprising: nickel compound grains, wherein said nickel compound grains are composed of ball-shaped grains, substantially ball-shaped grains, or an aggregation of both; a compound selected from the group consisting of Y2O3, Er2O3, Yb2O3 and CaF2; and 3-15 wt. % of carbon grains, wherein said carbon grains comprise a mixed system of: (1) 25-75 wt. % of carbon grains, based on a total weight of the carbon grains, having a surface area of 1-30 m2/g; and (2) 75-25 wt. % of carbon grains, based on a total weight of the carbon grains, having a surface area of 30-300 m2/g, with the proviso that the carbon grains of (1) and (2) of the mixed system have a different surface area. 2. The compressed nickel compound anode according to claim 1, wherein said nickel compound grains have a mean grain size ranging from 1 μm to 50 μm. 3. The compressed nickel compound anode according to claim 1, wherein said compound is Y2O3. 4. The compressed nickel compound anode according to claim 1, wherein said compound is Er2O3. 5. The compressed nickel compound anode according to claim 1, wherein said compound is Yb2O3. 6. The compressed nickel compound anode according to claim 1, wherein said compound is CaF2. 7. The compressed nickel compound anode according to claim 1, wherein said compound is present in the anode active material in an amount of 0.1-10 wt. %, based on the nickel compound grains. 8. The compressed nickel compound anode according to claim 1, wherein said compound is present in the anode active material in an amount of 0.1-2 wt. %, based on the nickel compound grains. 9. The compressed nickel compound anode according to claim 1, wherein said nickel compound grains are composed of ball-shaped grains. 10. The compressed nickel compound anode according to claim 1, wherein said nickel compound grains are composed of substantially ball-shaped grains. 11. The compressed nickel compound anode according to claim 1, wherein said nickel compound grains are composed of an aggregation of ball-shaped grains and substantially ball-shaped grains.