18650 battery 3500mah cathode material technology development trends and
future prospects
18650 battery 3500mah cathode material technology development trends and
future prospects. The core material of lithium-ion batteries is the cathode
material, which directly affects its safety, cycle life and cost. Lithium
batteries are one of the core components of new energy vehicles. 18650 battery
3500mah cathode materials have a huge impact on their safety, cycle life and
other properties, and are crucial to the rapid rise of strategic emerging
industries such as new energy and new energy vehicles.
18650 battery 3500mah cathode material technology development trends
1. Power 18650 battery 3500mah cathode materials focus on multi-element
materials, developing towards single crystal and high nickel
The proportions of the multi-element materials nickel (Ni), cobalt, and
manganese can be adjusted. As the nickel content increases, the gram specific
capacity of the material increases, and the energy density of the battery also
continues to increase. At the same time, due to the high cost of cobalt raw
materials and the large fluctuation amplitude of cobalt prices, the cost of
multi-material materials with high cobalt and low nickel remains high. In order
to reduce costs and seek materials with higher energy density, 18650 battery
3500mah companies tend to use Ni content Relatively high NCM622, NCM811 and
NCA.
High-end 18650 battery 3500mah multi-materials use a combination of doping
and diversified coating processes to reduce side reactions between the material
and the electrolyte, ensuring that the secondary particle multi-material
structure can exist stably under high voltage without structural collapse. In
addition, material manufacturers have developed another single-crystal
high-voltage multi-element material. This material has a better layered
structure, thereby improving the material's cycle performance under high
voltage. Under the operating voltage of 3~4.4V, the lithium ion transfer
efficiency can be improved, and the discharge specific capacity of
multi-component materials can be increased by more than 15%.
2. The cathode materials of small lithium batteries are developing towards
high voltage and low cobaltization.
The small digital market focuses on the energy density and safety of
lithium batteries. After the working voltage of high-voltage lithium cobalt
oxide continues to increase to 4.45V, high-voltage multi-element materials have
also become the main research direction for the development of digital 18650
battery 3500mah cathode materials. 18650 battery 3500mah manufacturers have
begun to gradually adopt lithium cobalt oxide mixed with multiple materials in
products below 4.40V to achieve the purpose of reducing costs. It is conceivable
that the technology of replacing lithium cobalt oxide with multi-component
materials is becoming increasingly mature, the application of multi-component
materials will be broader, and this low-cost replacement will be
irreversible.
3. Energy storage 18650 battery 3500mah cathode materials
Lithium iron phosphate is less dense than other lithium-ion batteries, but
it has low cost, high safety, and long battery life. From the perspective of
cycle life and future cost reduction, lithium iron phosphate batteries are a
relatively promising cathode material for energy storage batteries.
Cathode material is the most critical raw material in lithium batteries. In
the current market, power battery cathode materials have three characteristics:
system diversification, personalized demand, and changing markets. Lithium iron
phosphate is currently the most widely used power battery material in the
Chinese market. The material's high safety and cycle stability enable it to
occupy a certain position in application fields such as commercial vehicles and
special vehicles.
At present, whether it is policy orientation, market demand, or
technological evolution direction, high nickel content of ternary materials has
become an inevitable trend in the development of power 18650 battery 3500mah
materials.
Future market outlook for 18650 battery 3500mah cathode materials
With such clear demand for new energy vehicles, the market demand for
lithium batteries and cathode materials is expected to continue to develop
rapidly. Global shipments of 18650 battery 3500mah cathode materials are
expected to be approximately 360,000 tons in 2018, a year-on-year increase of
19%. By 2020, the global demand for 18650 battery 3500mah cathode materials is
expected to grow rapidly to 530,000 tons, of which 370,000 tons are
multi-component materials, of which more than 1/3 are high-nickel
multi-component materials.
It is expected that due to the continuous expansion of the market for new
energy vehicles and the irreplaceability of multi-material materials in the
short term, the demand for cobalt and lithium resources will continue to grow
rapidly in the next few years. How can my country avoid the dilemma of external
resources and how to accelerate the reserve and development of cobalt and
lithium resources? , Formulating related recycling policies is one of the most
important issues to ensure the stable development of new energy vehicles in our
country.
New energy vehicles have brought vigorous development to the 18650 battery
3500mah and cathode material markets. China's dual geographical advantages of
both production and sales have brought unprecedented opportunities to China's
18650 battery 3500mah industry chain. Due to the pursuit of cruising range, the
energy density requirements of power lithium batteries are constantly
increasing, and multi-materials have become the mainstream development trend of
18650 battery 3500mah technology at home and abroad.
Summary: The performance of 18650 battery 3500mah cathode materials
directly affects the performance of lithium-ion batteries, and its cost also
directly determines the cost of the battery. Lithium batteries will maintain
stable and sustained development in the next three years, and the total demand
for lithium batteries is expected to reach 130Gwh in 2019. As the application
fields of lithium batteries continue to expand, 18650 battery 3500mah cathode
materials continue to develop and expand.
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