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Overview on Nickel oxide
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 a green, crystallized solid that’s the main element of nickel. Millions upon millions of tons of nickel oxide powder (99.999%), are being produced each year, despite it being rare. 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 oxygen anion or one metal covalent. 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 for aerospace 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 is typically available in a matter of minutes. Submicron, nanopowder and high purity forms of nickel oxide are available.
For what purpose is nickel dioxide 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 nickel-zinc fertilizer), is used in glazes, ceramics, and glass.
NiO is available in a number of professional applications. The applications distinguish between “chemical quality” and “metallurgical quality. Chemical grade is an extremely pure material that is often used for 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 Édouard Guillaume received the 1920 Nobel Prize in Physics in Physics 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.
The process of heating nickel oxide can produce metallic nickel by adding carbon monoxide, hydrogen, or carbon to it. 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 is easily soluble in ammonium hydroxide, acid and potassium cyanide. It cannot be dissolved in warm and cold water or a caustic acid solution.
To generate spin-polarized electricity, 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. However, because of the symmetry inherent in spin sublattice it can still be difficult to generate or manipulate spin-polarized curents. 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 change the bias, which allowed them to manipulate the sign and magnitude of spin polarization. This system is capable of producing positive spinpolarization up to 80% at approximately 0.9 V, while it can produce negative spinpolarization exceeding a bias voltage that exceeds 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.
Does nickel oxide have acidic and alkaline properties?
Data on materials will be provided as is, unless otherwise specified. They are stored at standard temperatures (at 25°C [77°F], 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 with acids 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 won the MTE 2020 Gold Award for its novel nickel oxide package 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 and 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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