Meishen Technology Company
Glassy carbon
electrode made from nanometer magnesium oxide has many characteristics, such as
good stability to the battery, high conductivity, high purity, no gas in the
electrode, easy surface regeneration, low hydrogen and oxygen overpotential,
cheap price, etc.
The
following is a brief introduction to the preparation process of nanometer
magnesium oxide added to lithium batteries. Firstly, insoluble solid particles
ranging from 0.05-10 m in diameter, such as TiO2, SiO2, Cr2O3, ZrO2, CeO2,
Fe2O3, BaSO, SiC, MgO, etc. were added to the lithium ion battery.
The
material used as lithium ion has the characteristics of good charging and
discharging efficiency, high specific capacity and stable cycling performance.
Secondly,
lithium battery cathode material, nano magnesium oxide as conductive dopant,
through solid reaction to generate magnesium doped lithium iron manganese
phosphate, and further made into nanostructure anode material, its actual
discharge capacity reaches 240mAh/g.
This
new cathode material has the characteristics of high energy, safety and low
price, suitable for liquid and colloidal lithium ion batteries, small and
medium-sized polymers, especially for power batteries with high power.
Then,
the capacity and cycling performance of spinel lithium manganate battery were
optimized.
In
the electrolyte of lithium ion battery with spinel lithium manganate as the
anode material, nanometer magnesium oxide is added as the deacidifier to remove
the acid, and the added amount is 0.5-20% of the electrolyte weight.
By
removing acid from the electrolyte, the content of free acid HF in the
electrolyte is reduced to less than 20ppm, reducing the solubility of HF to
LiMn2O4, and improving the capacity and cycling performance of LiMn2O4.
Finally,
in the first step, nano magnesium oxide was mixed with alkali solution as pH
regulator and ammonia solution as complexing agent, and was added to mixed
aqueous solution containing cobalt salt and nickel salt to co-precipitate Ni-CO
complex hydroxides.
In
the second step, lithium hydroxide was added to ni-CO compound hydroxide and
the mixture was heat-treated at 280-420?.
In
the third step and the second step, the products generated are heat-treated in
an environment of 650-750?,
which is related to the time of co-precipitation. As a result, the average
particle size of lithium composite oxide decreases or the bulk density
increases.
When
the lithium composite oxide is used as the anode active material, a lithium ion
secondary battery with high capacity can be obtained, while the actual amount
of magnesium oxide added depends on the specific formula.
Meishen is the
world's leading producer of magnesium oxide, Magnesium oxide is an oxide of
magnesium, an ionic compound. It is a white solid at room temperature.
Magnesium oxide exists in the form of periclase in nature and is a raw material
for magnesium smelting. Magnesium oxide is white or light yellow powder,
odorless, tasteless, this product is insoluble in water and ethanol, melting
point 2852 ° C, boiling point 3600 ° C, magnesium oxide has high refractory
insulation properties. It can be converted into crystal by burning at a
temperature above 1000 ° C. If it rises above 1500 ° C, it will form a burnt
magnesia or sintered magnesia.
Magnesium
oxide can be used in the manufacture of metallurgy, smelting, advanced magnesia
bricks, refractory materials and moisturizing materials. It is also widely used
in rubber, rubber sheet, rubber products, pharmaceutical industry, food
industry, plastic sheet accelerator, glass fiber reinforced plastics and
Surface coating of silicon steel sheet, paper production, steel ball polishing,
leather treatment, insulation materials, grease, dyes, ceramics, desiccant,
resin, flame retardant, etc.
Hebei
Meishen Chemical Technology Group is the main magnesium oxide producer in the
world. It is also the largest magnesium salt producer in China and has won the
ISO9002 quality system certification. It also has GMP-Certification.
With
rich experience in the research, development, production, management and
operation of magnesium oxide products, Meishen Group has always attached great
importance to the research and development of new products and strict
requirements on product quality. Meishen has a high-level sales team. The
business covers more than 20 countries and regions around the world. It is
widely welcomed by new and old customers.
Tell:+8613833967259
Email:admin@mgochem.com
Wesite:http://www.72meihouwang.com/
Meishen
has a high-level sales team. The business covers more than 20 countries and
regions around the world. It is widely welcomed by new and old customers.