High temperature nickel-hydrogen battery

Abstract

This invention relates to high temperature nickel and hydrogen battery in battery field, which comprises base board and positive electrode components, wherein the positive substance has sphere nickel hydroxide activity subject, conductor agent, adhesive agent and addictive agent, wherein the addictive agent is of calcium fluoride, zinc oxide, barium hydrate, erbium oxide, yttrium oxide. The invention improves the positive electrode reaction level and adds the NiOOH quantity through adding zirconium element into the positive subjects.

Description

technical field

[0001] The invention relates to the field of batteries, in particular to a nickel-metal hydride battery. technical background

[0002] In general ordinary nickel-hydrogen batteries, the positive electrode material on the positive electrode substrate is composed of spherical nickel hydroxide active material, conductive agent, binder, and additives. The additives are usually calcium fluoride, zinc oxide, barium hydroxide, erbium oxide, One or a combination of diyttrium trioxide, the following two reactions occur at the positive electrode during charging:

[0003] <chemistry num="001"> <chem file="200510040591_cml001.xml" / > < / chemistry> (1)

[0004] <chemistry num="002"> <chem file="200510040591_cml002.xml" / > < / chemistry> (2)

[0005] Reaction (1) is positive electrode Ni(OH) 2 The charging reaction of reaction (2) is the generation reaction of oxygen. As the temperature increases, the potential of ...