Tag: lithium

Surface Modification of Lithium Metal Foil

lithium metal foil is a soft, flexible sheet of lithium that can be rolled down to an extremely thin thickness. This material has potential applications in lithium batteries for mobile phones and other electronics, because it can be a low-cost alternative to the more expensive lithium cobalt (LiCo) and nickel manganese (NMC) electrodes currently used.

The performance of these lithium metal anodes can be dramatically improved by surface modification to suppress dendrite growth and improve ionic conductivity between the electrode and the liquid electrolyte. One such method involves spray painting the lithium surface with a soluble graphene oxide (GO) solution, which is reduced spontaneously to form a thick layer of GO on the electrode, resulting in a much smoother and tighter surface than the unmodified foil. As a result, the GO-modified foil is able to sustain flat voltage plateaus for up to 1,000 cycles in Li/Li coin cells under OCV.

A less-studied method of surface modification consists of immersing the lithium metal in a DMSO solution containing an ionically conductive polymer to form a protective layer on the electrode surface. Choi et al. showed that the ionically conductive polymer PEDOT-co-PEG was capable of inhibiting dendrite growth by providing inter-space between lithium ions, as confirmed by XPS analysis.

To demonstrate the effectiveness of this approach, the morphology and chemistry of both the as-received and roll-pressed lithium electrodes were studied in detail by AFM, SEM, and XPS. The results indicate that the roll-press treatment significantly reduces both the roughness and thickness of the native surface film on the lithium foil. The morphology of the as-received lithium is characterised by mountain- and valley-like structures, while the thinning of the native film leads to a flatter topography with fewer of these structures on the roll-pressed foil. These changes were reflected in the evolution of the SEI during cycling of Li/Li symmetric cells, with the as-received electrode exhibiting major voltage oscillations after the first cycle while the roll-pressed electrode displayed a stable charge–discharge behavior for up to 70 cycles.

lithium metal foil

3x Energizer AA Lithium Strip – How to Extract Lithium From an Old Battery

Lithium is the most abundant element in the earth’s crust. Its high heat and conductivity make it an ideal metal for a wide range of applications.

It is also a key ingredient of lithium-ion batteries, which are used in consumer electronics and electric vehicles. Demand for the material has risen steadily in recent years, with China announcing in 2015 a five-year plan to prioritise electric vehicles and batteries.

The World Mining Outlook, an annual publication published by the US Geological Survey (USGS), says Australia dominated global production in 2018, with Chile, China and Argentina also supplying significant amounts. The spodumene concentrate is then typically sold to lithium hydroxide or carbonate conversion plants, most of which are located in Asia.

This method of mining leads to a number of environmental issues. It destroys the soil structure, which depletes water tables and affects communities living in areas near salt mines.

There is also a potential for health impacts, as the chemical substances in lithium cause respiratory problems and other illnesses. This, combined with the environmental impact of lithium mining, means that the material should be extracted more carefully to minimize these consequences.

In the meantime, if you are looking for a safe and environmentally friendly alternative to the 3x Energizer AA lithium strip, you can easily extract your own from an old battery! This is not as dangerous as you might think – just follow the steps below and it should be all done in no time!

Lithium is the most abundant element in the earth’s crust. Its high heat and conductivity make it an ideal metal for a wide range of […]

Lithium I 7 – The Second Stable Isotope

Stable Isotope

Lithium i 7 is the second stable lithium isotope and accounts for about 92.5 percent of naturally occurring lithium. The element has a relative atomic mass of 7.016004, a nuclear spin 3/2 and is one of the lightest elements. It is a member of the alkali metals family and is commonly found in brines or as an ingredient in lithium-ion batteries.

l i 7 Isotopic compositions of lithium are important in geochemical studies, for example in reconstructing past changes in seawater isotopic composition and riverine flux. It is also of interest in cosmochemical studies as it reflects primordial nucleosynthesis, galactic cosmic-ray spallation, and destruction processes.

Lithium is used in the production of radioisotopes for medical research. It is also used to control the chemistry of pressurized water reactor (PWR) cooling systems. The world’s demand for lithium is increasing and the global supply of l i 7 could be in short supply by 2025. Trace Sciences is your most reliable supplier of l i 7. Please contact us to discuss your specific requirements.

Stable IsotopeLithium i 7 is the second stable lithium isotope and accounts for about 92.5 percent of naturally occurring lithium. The element has a relative […]

Lithium Stearate Solubility

Solubility

Lithium stearate is soluble in water and ethanol.
As a general rule, substances in the lithium salts of monocarboxylic acids C14-C22 category are expected to have similar physico-chemical properties as they are all low molecular weight compounds, containing only a single carbon chain and therefore have an equal amount of fatty acid and metal cation.

Lithium stearate can be dissolved in aqueous solutions of lithium hydroxide (Shoueb 1999). It is insoluble in methanol, but soluble in ethanol and water.

It is also insoluble in ether and is hygroscopic. It is air sensitive and must be stored in a dry and well-ventilated container.

This substance is a component of high temperature lubricating greases and is used as a stabilizer for cosmetics and the plastic industry. It is also used as a corrosion inhibitor in petroleum products and as catalysts for chemical synthesis.

This substance is a component of automotive general-purpose lithium grease and can be used for lubrication of friction parts in the range from -30 degC to 120 degC. It is made by thickening fatty acid soap with low-condensation point mineral oil and adding rust inhibitors and antioxidants.

SolubilityLithium stearate is soluble in water and ethanol.As a general rule, substances in the lithium salts of monocarboxylic acids C14-C22 category are expected to have […]

What is lithium sulfide and its application?

What is lithium sulfide and how can it be used? Lithium Sulfide It is a yellow to white crystal with an inverse fluorite arrangement. Li2S, which is a lithium sulfide, is the molecular formula. The molecular mass of lithium sulfide (45.95) is equal to 1.66. The melting point for lithium sulfide at 938°C is 972°C, and its boiling point at 1372°C is 1372°C. Lithium sulfide can be easily dissolved in water, ethanol and soluble in acid. It is also insoluble in alkali. Rechargeable lithium-ion batteries can use lithium sulfide as an electrolyte.
Lithium sulfide’s physical and chemical characteristics
Physical properties
You can find white or yellow crystals.
Features an anti-fluorite design
The specific gravity of 1.66 (water = 1), 938degC melting point, and 1372degC boiling point are the values.
Water soluble, soluble, ethanol soluble, soluble, acid soluble, insoluble, alkali insoluble.
Chemical nature
Lithium sulfide is able to absorb water vapor from the air and hydrolyzes, releasing highly poisonous hydrogen sulfide.
Separating lithium sulfide with acid can liberate hydrogen sulfuride. It can also react violently to nitric acids, but it can only be decomposed by heating it. Hydrobromic acid or hydroiodic can do this. It reacts slowly and violently with concentrated sulfuric, but not with dilute. It reacts slowly with concentrated sulfuric acid when heated to around 300 degrees Celsius in the atmosphere. But it doesn’t produce sulfur dioxide. Instead, it produces lithium sulfate.

Preparation for lithium sulfide
You can prepare lithium sulfide in a number of ways. In the past, sulfur and lithium were heated together to react. Then carbon or hydrogen could be used to reduce lithium-sulfate with heating to create lithium sulfide. Later it was discovered that both lithium and sulfur could act in liquid ammonia. Also, lithium ethoxide is capable of decomposing the ethanol adduct to lithium hydrosulfide. Some people used hydrogen sulfide (lithium pentoxide) to prepare lithium hydrogen, sulfide. They then used vacuum heating to melt the lithium hydrogen, sulfide.
Anhydrous lithium sulfide is a high-quality product that can be made by reacting metallic lithium and hydrogen sulfide with tetrahydrofuran.
Application of lithium sulfide
Lithium sulfide is mostly used as an electrolyte in rechargeable lithium ion batteries.
Precautions and storage of lithium sulfide
Lithium Sulfide is able to absorb water vapor from the air and hyrolyzes it, releasing highly toxic hydrogen sulfuride gas. It must be kept at room temperatures in a dry, dark area.
Hydrogen sulfuride can cause slight harm to water bodies. Avoid exposing large quantities or undiluted products to groundwater or sewers. Do not let materials go into the environment.
The irritation from lithium sulfide
The skin: Itching of the skin and mucous membranes
Irritation: The effects above the eyes
Sensitization: There is no known sensitization

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What is lithium sulfide and how can it be used? Lithium Sulfide It is a yellow to white crystal with an inverse fluorite arrangement. Li2S, […]

Lithium Nitrate Solution

lithium nitrate solution is produced by a chemical reaction between nitric acid and lithium carbonate. The by-products of this process include water and carbon dioxide. It is used as a heat exchange media and as a laboratory reagent.

It is also an excellent oxidizing agent, making it useful as an ingredient in special pyrotechnic devices to give a red flame. It is also a good chemical precursor for the production of high purity compounds and catalysts.

When diluted to water, lithium nitrate has a density of 2,38 g/cm3 at room temperature and decomposes to nitric oxide (Li2 O) at temperatures greater than 600 degrees C. It can be used in a variety of applications, including as a laboratory reagent, in pyrotechnic devices and in a number of industrial applications.

This material has no specific toxicity. However, it may cause irritation to the skin and eyes. It may also cause an explosion if ingested.

A lithium nitrate solution is used as a concrete expansion control additive to suppress ASR and reduce cracking. This is accomplished by adding small amounts of the solution to the mix water at a dosage that controls expansion due to ASR. The addition of lithium nitrate solution, when used at the levels necessary to effectively control expansion due to ASR, does not adversely affect the properties of fresh or hardened concrete. It slightly enhances the workability of concrete and may lead to a small decrease in setting time.

lithium nitrate solution is produced by a chemical reaction between nitric acid and lithium carbonate. The by-products of this process include water and carbon dioxide. […]

Application of graphene in lithium-ion batteries

The unique physical and chemical characteristics of graphene make graphene a great candidate for research in the area of electrode material development. According to various application areas, graphene can be divided into the following three categories: graphene application in lithium-ion cells, graphene application in anode material, and other uses in lithium-ion lithium-ionbatteries.
Application to graphene in cathode material
The applicable cathode materials for lithium-ion battery batteries should have high reversible potential, stable potential, nontoxicity, low cost of production, and large reversible power. LiFePO4 (low lithium ion mobility) and lithium iron phosphate are the most popular cathode materials used for lithium-ion cells. It is possible to improve the conductivity and rate performance of LiFePO4 materials by adding graphene.
A lack of research on graphene material positive electrodes is due to its uniqueness. Research has shown that hydrothermal methods of covering graphene directly on LiFePO4 surfaces to create composite materials have a poor rate of performance improvement. It could be because graphene structure is destroyed or stacked.
The study showed that half-wrapping LiFePO4 in graphene can improve its conductivity. But, it decreases the ion transmission effectiveness after full-wrapping it. This could be due to the six-membered structure of graphene, which makes it difficult for lithium ions to pass through. To prepare LiFePO4/graphene hybrids, some researchers have ultrasonically mixed LiFePO4 Nanoparticles and graphite dioxide. The specificity of lithium insertion is significantly increased after the material has been coated with conventional carbon. This can still be maintained at approximately 70mAh/g, even under high rates of 60C.

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The unique physical and chemical characteristics of graphene make graphene a great candidate for research in the area of electrode material development. According to various […]

What is Lithium Stearate?

What is lithium-stearate? lithium stearate (C17H35COOLi) is a lithium salt stearic acid. It is one of the most popular metal soaps. This is a colorless and almost insoluble powder that melts in water and alcohol at 220°C. The grease remains lubricated at temperatures as low as -20 degrees Celsius and is thermally stable up to 150 degrees C. This was the largest use of lithium metal before the invention of lithium-ion cells.
For pencils, small amounts of lithium Stearate can be used. The compound is very toxic when given orally. It is therefore used in cosmetics.

What purpose is lithium stearate useful for?
It can be used as a general-purpose oil to provide high water resistance. Because it can be used at both high- and low temperatures, lithiumstearate is found in many industries. This includes the automotive industry, heavy machinery industry, and the aerospace industry. The general-purpose grease lithium stearate also serves as a stabilizer in cosmetics and plastics. This compound is also a corrosion inhibitor in petroleum because of its properties.

Here are some applications for lithium stearate.
It can be used to thicken natural and synthetic oils.
It makes it possible to make lightweight metal molds.
It is a thicker, finer grease that is ideal for high-temperature applications.
It can raise the melting point of microcrystalline wax and increase its elasticity.
It is more resistant than other sodium and potassium soaps to losing consistency because of its higher melting point (22degC compared with 140degC).
It resists corrosion and rust well.
Lithium stearate is water-repellent but works well in all other environments.
This sealant is excellent.

What is lithium grease?
The invention of lithium grease occurred in the early 1940s. It’s made of lithium hydroxide reacting in fatty acids. Modern lithium soaps are made from 12HSA (or triglyceride), and lithium hydroxide monohydrate in base liquids.
Grease is one the oldest lubricants that humans have used, dating back to 1400 BC. Grease is a lubricant that reduces friction and acts as a seal. More than 90% use grease as alubricant.
It could be either mineral oil, synthetic fluid, or a combination of both. There are many fats that can be used to make lithium soap. The preferred oils are 12HSA (12HSA) and HCO (hydrogenated casting oil). Perhaps the most versatile multi-purpose grease ever invented is lithium 12-hydroxy stearate grease.
The water resistance of lithium grease is excellent (not as good than calcium), and it has excellent mechanical or thermal stability. The continuous operating temperature is 130°C (266°F), with a drop point of between 190 and 200°C. It is the most preferred bearing grease in almost every industrial field.

Lithium Stearate powder price
Price is affected by many factors, including supply and demand, market trends, economic activity and unexpected events.
You can email us to request a quote for the latest stearate price. (brad@ihpa.net)

Lithium Stearate Pulverizer
Technology Co. Ltd. is a trusted global supplier and manufacturer of chemical materials. We have more than 12 years experience in producing super high-quality chemicals.
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What is lithium-stearate? lithium stearate (C17H35COOLi) is a lithium salt stearic acid. It is one of the most popular metal soaps. This is a colorless […]

The Applications of Nano Silicon Powder

Overview Nano Silicon Powder
The most promising electrode material for next generation lithium-ion batteries is silicon. Its specific capacity (3600mAh/g) is more than 10 times that of graphite (372mAh/g). The material’s significant expansion (more than 300%) in the loaded state (lithiation), and the instability of its solid electrolyte interface (SEI) make it a restricted choice. Poor mechanical stability and chemical passingivation properties make silicon electrodes difficult to cycle. There has been a lot research into these issues and many suggestions for ways to overcome them.
The volume of silicon changes during lithium insertion. It is about 400%. When this happens, the silicon cracks and falls from the collector. The prototype lithium-silicon lithium-ion battery loses most of its capacity in a few charge and discharge cycles. Lithium-ion silicon’s stability and capacity issues are the keys to the success of large-capacity, high-capacity batteries.
Anode materials made of silicon have great potential to improve the energy storage and efficiency of lithium-ion cells. The main drawback of silicon anode materials was their surface passivation via oxidation. This is a process that increases impedance while decreasing the circularity. High-purity silicon materials are capable of achieving high specific capacity without significantly affecting the cycle life.

Nano Silicon Anode Material Si Powder CAS 7440-21-3

What are the potential applications Nano Silicon Powder
Silicon is the most promising type of anode material for next-generation lithium-ion batteries. The nano silicon anode material is used in aluminum shell, flexible, and cylindrical batteries. Our silicon anode material can be mixed in the solvent to prevent agglomeration. They stick well to other battery materials and provide uniform and stable coatings. They can be used in a variety of applications including photovoltaics, lithium-ion batteries, and electronic components.
Nano Silicon Powder Supplier
Tech Co., Ltd. () is a professional Lithium Batterie Anode Over 12 years’ experience in chemical products development and research. We accept credit cards, T/T and West Union payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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Overview Nano Silicon Powder The most promising electrode material for next generation lithium-ion batteries is silicon. Its specific capacity (3600mAh/g) is more than 10 times […]

Modification of Natural Graphite and Artificial Graphite

The difference in processing technology and raw materials will determine the final product. graphite powder Natural graphite is separated from artificial graphite. Graphite is an excellent choice for anode materials in lithium-ion batteries because of its low lithium cost and high efficiency.

Analyse of natural graphite

Natural flake graphite can be used to make natural graphite. It is then modified to produce spherical natural Graphite. Although natural graphite has many advantages, there are some drawbacks to it.
Natural graphite exhibits many defects on the surface, high specific area and low efficiency.

PC-based electrolyte can cause serious problems such as solvated lithium Ion co-embedding. This leads to graphite peeling and expansion, and ultimately, battery performance failure.

The anisotropy of natural graphite means that lithium ion is difficult to embed from the end faces. It also makes it easy for lithium ions to be precipitated. The majority of artificial graphite is made from dense petroleum coke, needle coke, or other precursors. However, there are some issues such as poor magnification, low temperatures performance, and easy separation of lithium.

Modifications to natural graphite

Different surfactants were applied to the graphite to fix its surface imperfections and toler electrolyte well.

To improve magnification of natural graphite, the first step is to modify the surface pore structure. After etching with strong alkali (KOH), the solution was diluted in aqueous water.

You can also use strong oxidants to treat the surface of graphite. This will passivate it and make natural graphite more efficient.

Third, fluorinate natural graphite by using ClF3. Effectively, the cycle life and charge/discharge ratio are improved.

The amorphous graphite can also be coated to form “coreshell” structures. The carbon source for amorphous Carbon is typically pitch, phenolic or other low temperature pyrolytic material. Because of the long distance between carbon layers, the presence of a carbon coating can reduce interfacial impedance and isolate electrolyte from the particles. Enhance the intercalation or diffusion of lithiumion.

To solve the anisotropy problem in natural graphite, mechanical treatments are often employed to shape the particle morphology. An air flow shaping device uses wind to create particles that rub against each others and to cut corners. The method doesn’t introduce any doping impurities. It has high efficiency and will result in the pulverization a large amount of particles with low yield.

Mechanical fusion machines use the material to spin at high speeds in a rotor. The material clings on to the wall with the help of centrifugal force and then passes between the stator extrusionhead and the rotor at high velocity. This is when the material will be subject to extrusion force and shear pressure. To achieve the goal of spheroidization, the surface is subject to the friction between particles and other particles.

Natural graphite’s particle sizes are reduced to 15-20 mm after the spheroidization process. The first efficiency and performance of the cycles is clearly improved. Magnification performances can also be greatly enhanced.

Modifications to Artificial Graphite

Modifications of artificial graphite. The modification process of artificial graphite has a different structure than that of natural graphite. Reorganizing the particle structure of graphite can reduce the OI value (position degree) of graphite grains. A needle coke precursor of between 8-10mm in diameter is chosen. The carbon source for the binder is typically asphalt. A number of needle coke particles can be bonded using drum furnace treatment. The secondary particles, with a size of between 14-18mm, are used for graphitization. This will reduce the Oi values of the material.

Graphite Powder Pricing

Price is affected by many things, such as the demand and supply in the market and industry trends. Economic activity. Unexpected events.
You can email us to request a quotation if you want the current graphite price. (brad@ihpa.net)

Graphite Pulver Supplier

Technology Co. Ltd. has over 12 years of experience as a reliable natural graphite supplier and manufacturer. All of our products can be shipped worldwide.

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The difference in processing technology and raw materials will determine the final product. graphite powder Natural graphite is separated from artificial graphite. Graphite is an […]

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