Nickel(II) hydroxide (Ni(OH)
2) is an insoluble
compoundA chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together...
commonly used in
rechargeable batteryA rechargeable battery is a group of one or more secondary cells. Rechargeable batteries use electrochemical reactions that are electrically reversible. Rechargeable batteries come in many different sizes and use different combinations of chemicals...
electrodes. When charged these electrodes form nickel(III) oxide-hydroxide. Nickel(II) hydroxide is a precipitate formed when the hexaaquanickel(II) ion is mixed with aqueous ammonia. The mineralogical form is very rare and is called theophrastite.
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Nickel(II) hydroxide (Ni(OH)
2) is an insoluble
compoundA chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together...
commonly used in
rechargeable batteryA rechargeable battery is a group of one or more secondary cells. Rechargeable batteries use electrochemical reactions that are electrically reversible. Rechargeable batteries come in many different sizes and use different combinations of chemicals...
electrodes. When charged these electrodes form nickel(III) oxide-hydroxide. Nickel(II) hydroxide is a precipitate formed when the hexaaquanickel(II) ion is mixed with aqueous ammonia. The mineralogical form is very rare and is called theophrastite.
See also
- Nickel-cadmium battery
The nickel-cadmium battery is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes....
- Nickel hydrogen battery
A nickel hydrogen battery is a rechargeable electrochemical power source based on nickel and hydrogen. The difference with a nickel-metal hydride battery is the use of hydrogen in a pressurized cell of up to 1200 psi...
- Nickel metal hydride battery
A nickel-metal hydride cell, abbreviated NiMH, is a type of secondary electrochemical cell similar to nickel hydrogen cell. The NiMH battery uses a hydrogen-absorbing alloy for the negative electrode instead of cadmium. As in NiCd cells, the positive electrode is nickel oxyhydroxide...
- Nickel-iron battery
The nickel-iron battery is a storage battery having a nickel oxide-hydroxide cathode and an iron anode, with an electrolyte of potassium hydroxide. The active materials are held in nickel-plated steel tubes or perforated pockets. The nominal cell voltage is 1.2V...