What are the future development prospects of lithium titanate battery
technology? Lithium titanate battery technology is very advanced in the field of
energy storage. It has the advantages of fast charging, long life, and low
temperature resistance. It is especially suitable for fixed-mileage or
fixed-line buses, terminal trailers and other models. Lithium titanate batteries
are still not the mainstream of battery technology. At present, ternary lithium
batteries and lithium iron phosphate batteries are mostly used by domestic
automobile manufacturers.
What is lithium titanate battery?
Lithium titanate battery is a kind of lithium titanate used as the negative
electrode material of lithium batteries. It can be combined with lithium
manganate, ternary materials or lithium iron phosphate and other positive
electrode materials to form a 2.4V or 1.9V lithium ion secondary battery. In
addition, it can also be used as a positive electrode to form a 1.5V lithium
secondary battery with metallic lithium or lithium alloy negative electrode. Due
to the high safety, high stability, long life and green environmental protection
characteristics of lithium titanate.
Composition of lithium titanate battery
Negative electrode: lithium titanate material
Separator: Lithium battery separator with carbon as negative electrode
Electrolyte: lithium battery electrolyte with carbon as the negative
electrode
Battery case: lithium battery case with carbon as negative electrode
What are the future development prospects of lithium titanate battery
technology?
Although lithium titanate batteries have poor rate performance and low
energy density, they have the advantage of fast charging. As their prices become
increasingly reasonable and charging facilities become increasingly complete,
lithium titanate batteries are expected to occupy an important place in the
power battery field in the future.
It is understood that from the perspective of actual use value, lithium
titanate batteries are expected to bring lower cost advantages to customers with
their ultra-long cycle life. As prices become increasingly reasonable, lithium
titanate is about to stage a counterattack. The future market space of lithium
titanate batteries will be very limited. There is basically no space for the
automobile industry, and the space for the automobile industry in the future
will be even smaller than it is now. You can try it in the energy storage field,
but it will definitely not become mainstream. Coupled with the high price,
compared with the high cost performance of future energy storage that is
expected to be used for secondary use in power batteries, the prospects of
lithium titanate in the energy storage field are also worrying.
Advantages and Disadvantages of Lithium Titanate Battery Technology
Lithium titanate battery has small size, light weight, high energy density,
good sealing performance, no leakage, no memory effect, low self-discharge rate,
rapid charge and discharge, long cycle life, wide working environment
temperature range, safety, stability, green and environmental protection and
other characteristics, so it has very broad application prospects in the field
of communication power supply.
When lithium titanate batteries are used as negative electrode materials,
the potential platform is as high as 1.55V, which is more than 1V higher than
traditional graphite negative electrode materials. Although some energy density
is lost, it also means that the battery is safer.
Because lithium titanate batteries can be used safely in both high and low
temperature environments, it also reflects its important advantage of being able
to withstand wide temperatures (especially low temperatures). Currently, the
safe operating temperature range of Yinlong lithium titanate batteries is
between -50 degrees and 65 degrees.
Long cycle life. Compared with the graphite material commonly used in
traditional lithium-ion batteries, the skeleton structure of lithium titanate
battery materials hardly shrinks or expands during the charging and discharging
process of inserting and removing lithium. It is called a "zero strain" material
and avoids the need for general electrode materials. The problem of electrode
structure damage caused by unit cell volume strain during removal/insertion of
lithium ions.
The last advantage of lithium titanate batteries is their strong fast
charge and discharge capabilities and high charging rate. At present, the
charging rate of Yinlong lithium titanate batteries is 10C or even 20C, while
the charging rate of ordinary graphite anode materials is only 2C-4C.
Lithium titanate batteries will continue to produce gas during recycling,
causing the battery pack to bulge. This is especially serious at high
temperatures, affecting the contact between the positive and negative
electrodes, increasing battery impedance, and affecting battery performance.
This is also one of the main obstacles limiting the widespread application of
negative electrode material lithium titanate in batteries.
The process of nanometerizing lithium titanate battery material particles
is often difficult and requires high costs. It is currently difficult to achieve
large-scale industrial production.
Lithium titanate batteries have lower energy density than other types of
lithium-ion power batteries.
The development status of lithium titanate battery technology at home and
abroad
In the past 10 years, research on lithium titanate battery technology at
home and abroad has been surging. Its industrial chain can be divided into
lithium titanate material preparation, lithium titanate battery production and
integration of lithium titanate battery systems and its application in the
electric vehicle and energy storage markets.
International leaders in the research and industrialization of lithium
titanate materials include American Altitanium Nanotechnology Company, Japan's
Ishihara Industrial Co., Ltd., and the British Johnson Matthey Company, etc.
Among them, the lithium titanate material produced by American Altitanium has
excellent performance in terms of magnification, safety, long life and high and
low temperature. However, because the production method is too lengthy and
sophisticated, the production cost is high, making it difficult to promote
commercially.
There are not many manufacturers capable of mass-producing lithium titanate
batteries in the world, mainly represented by the American Austrian Titanium and
Japan's Toshiba Group. The application markets of lithium titanate batteries
mainly include electric vehicles, energy storage market and industrial
applications.
There are many domestic manufacturers of lithium titanate batteries, such
as Huzhou Weihong, Zhuhai Yinlong, Shenzhen Bolida, Tianjin Jiewei Power
Industry Co., Ltd., Sichuan Xingneng, CITIC Guoanmeng Guli Power Technology Co.,
Ltd. There are many smaller lithium titanate battery manufacturers in Shanshan,
Hunan and around Anhui and Shenzhen.
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