Nickel oxide Overview
Nickel (II), oxide, is a compound with chemical formula NiO. It is the principal oxide of nickel. Nickel oxide is an insoluble and thermally stable form of nickel that can be used for optical, ceramic and glass applications. Nickel oxide is the primary oxide of nickel and a green, crystallized solid. Millions upon millions of tons of high-purity (99.999%) nickel oxide powder are being produced each year. Oxide doesn’t conduct electricity.
Some oxides in perovskite form have conductivity in cathodes for solid oxide fuel cell and oxygen generation system. You will find them in compounds that contain at most one metal anion and one metallic cation. They are usually insoluble (water) and extremely stable. This makes them ideal for the creation of ceramic structures such as bowls made from clay for advanced electronic devices and light structural components in aero- and electrochemical applications like fuels batteries.
Metal oxides, which are anhydrides in basic acid, can react with acids or strong reducing agent to produce redox reaction. Nickel oxide is also possible to be produced into powders, particles, small bits, targets for sputtering, tablets, and nanopowders. Nickel oxide can be made into powders, small pieces and tablets. Submicron, nanopowder and high purity forms of nickel oxide are available.
How is nickel oxide used?
These are some of the uses for nickel oxide: It is used in making electrical ceramics like varistors or thermistors. The pigment Ferrite, also known as nickel-zinc Ferrite (or ferrite), is used in glazes, ceramics, and glass.
NiO is available in a number of professional applications. Application distinguishes between “chemical quality” and “metallurgical quality. Chemical grade is an extremely pure material that is often used in specific applications. While “metallurgical Grade” is mostly used to create alloys, “Chemical” can be used as a more general term. It’s used in the ceramic industry for making glass frit, enamel and ferrite. Sintered oxide can be used to make nickel steel alloys. Charles Edouard Guillaume received the Nobel Prize in Physics in Physics in 1920 for his research into nickel-steel alloys.
The most common hole transport material for thin-film solar cell is NiO. Also, it is a component in nickel-iron battery (also called Edison batteries), and also used as a fuel cell component. It is used to make specialty chemicals and catalysts. Before the advent of NiMH battery with environmental advantages and NiO, NiO was utilized to produce NiCd rechargeable lithium batteries. The anode electrode NiO of tungstenoxide (cathode Electrochromic Material) has been studied extensively in complementary electrochromic devices.
About 4,000 tons annually of chemical NiO are produced. Black NiO is the precursor to nickel sodium, and is made by mineral acid treatments. NiO is multifunctional hydrogenation catalyst.
Nickel oxide can be heated with carbon, hydrogen, or carbon monoxide to make it metallic. The nickelate is formed when it reacts with the sodium or potassium oxides at higher temperatures (> 700°C).
Is nickel oxide soluble in water?
Nickel oxide can dissolve in ammonium hydroxide, acid and potassium cyanide. It cannot be dissolved in warm and cold water or a caustic acid solution.
For spin-polarized current, you can use the junction between collinear nickel oxide and insulators
Antiferromagnetic materials are promising in the field of spintronics because they can withstand magnetic field disturbances, don’t produce stray fields and have extremely fast dynamics. Due to the spin sublattice’s symmetry, however, it can still be difficult to generate or manipulate spin-polarized curents from such materials. Nickel oxide could help to overcome this problem.
We have constructed a prototype junction consisting of a gold-nickel-gold-gold junction, in which a collinear nickel oxide insulator can destroy the spin sublattice symmetry using an external bias voltage. By inducing spin-up and down currents, this system allows for the creation of spin-polarized potentials.
Zhang Xianmin stated that the symmetry of spin sublattice has meant it was long held that no spin-polarized current can be produced in collinear ferromic materials. “Here we demonstrate that the bias voltage can destroy the symmetry in antiferromagnetic spun sublattice, which then causes a spin polarized current to be produced in the collinear nonferromagnetic material.”
This research provides an opportunity to increase the large resistance mismatch which inhibits small spin injections from the metal electrodes to the semiconductor. It will also make it simpler to combine spintronics, semiconductor electronics, and spintronics.
Team members were able not only to adjust the amplitude but also to alter the sign and magnitude of spin polarization through changing the bias. This system is capable of producing positive spinpolarization up to 80% at around 0.9 V, while it can produce negative spinpolarization above a bias voltage exceeding 1.6 V.
Zhang is hopeful that the findings of this study will open the door to new antiferromagnetic spinning devices. She also plans on continuing research into the manipulation of these materials.
What is nickel oxide’s acidity?
Data on materials will be provided as is, unless otherwise specified. They are stored at 25degC (77degF), 100 kPa. Nickel hydroxide has an inorganic chemical formula of NiO(OH). It is a dark solid that will insoluble in most solvents. However, it can be attacked by acid and alkalis.
Is nickel oxide magnetic?
Solutions growth produces branched, nickel oxide nanocrystals of narrow sizes. Magnet characterization shows that NiO nanocrystals of less than 12.8nm in size exhibit weak ferromagnetic states at room temperature due to their uncompensated spinning.
UiTM’s novel nickel oxide package for nano carsnations won the MTE 2020 gold award and International Merit Award.
Malaysian technology lecturer in electrical engineering at Teknologi MARA University, Malaysia (UiTM), was awarded the Gold Medal during the Malaysia Technology Expo 2020. Their project is called “Humidity sensor based on new nickel oxide nano-carnation structure synthesized by low-temperature immersion method”. Dr. Assoc. Mohamad Haifiz Mamat won also the International Merit Award for 2020 Malaysia Technology Expo.
In the present invention, a humidity sensor is made using nickel oxide nanostructures placed on inexpensive glass or flexible substrates. It is highly sensitive to moisture and water molecules. To make sensors at low temperatures, use the solution immersion process.
MTE has grown to be one of the world’s most recognizable invention shows, having been held each year since 2001. PROTEMP Group and University of Malacca Malaysia are responsible for managing MTE. SIRIM Tech Venture Sdn Bhd. SIRIM Berhad has a subsidiary called SIRIM Tech Venture Sdn Bhd. This company provides commercial services to Malaysian researchers and developers (R&D) who have created innovations. Over 500 international and local inventions were showcased during the three-day fair.
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