The energy density is very high and it can hold a large amount of electricity in a small size. But once the energy explodes, it's like a little bomb. Everything has two sides, and the same goes for batteries. Polymer batteries rely heavily on external circuitry, so they must have qualified protection circuitry before they can be used. The battery charging voltage cannot exceed 4.1V and the discharge current cannot be too large (this specifically depends on the capacity of your battery). unfortunately your battery swells and heats up, you need to put the battery in salt water, wait for it to cool, peel off the outer skin and soak it in salt water for more than half an hour before throwing it away. your safety, so remember that you must use a qualified and safe charger to charge! ! ! Someone must be present when charging the batterylithium battery, and do not charge the lithium battery when no one is present. Someone already burned down their house and car for this reason, so remember that.
When charging, please prepare a suitable platform to place your charger and lithium battery to ensure that they will not cause any damage or danger if the lithium battery accidentally explodes or catches fire . You need to reserve a fire-fighting area, prepare fire sand (I think you can also prepare a fire extinguisher), a fireplace, etc. are all good choices (there may be some flipping issues here).
When using lithium batteries for flying or charging, please prepare a bucket of sand next to it. When the lithium battery explodes, use sand to extinguish the fire. This is the most economical and effective method. the method is very cheap and necessary.
What are the three principlesthe lithium industries in China?
In the 1970s, M.S. Whittingham of Exxon used titanium sulfide as the positive electrode material and lithium metal as the negative electrode material to create the first lithium battery.
In 1980, J. Goodenough discovered that lithium cobalt oxide could be used as a cathode material for lithium-ion batteries.
In 1982, R.R. Agarwal and J.R. Selman of the Illinois Institute of Technology discovered that lithium ions have the particularity of incorporating graphite. This process is quick and reversible. At the same time, the safety risks of lithium metal batteries have attracted a lot of attention, so people have tried to use the characteristics of lithium ions embedded in graphite to make rechargeable batteries. The first usable lithium-ion graphite electrode was successfully produced by the laboratoriesoires Bell.
In 1983, M. Thackeray, J. Goodenough and others discovered that manganese spinel is an excellent cathode material with low price, stability and excellent conductivity and conductivity of lithium. Its decomposition temperature is high and its oxidation property is much lower than that of lithium cobalt oxide. Even in the event of a short circuit or overload, it can avoid the risk of burns and explosions.
In 1989, A.Manthiram and J.Goodenough discovered that a positive electrode using polymer anions would produce a higher voltage.
In 1991, Sony released the first commercial lithium-ion battery. Later, lithium-ion batteries revolutionized consumer electronics.
In 1996, Padhi and Goodenough discovered that phosphates with an olivine structure, such as lithium iron phosphate (LiFePO4) , are superior to traditional cathode materials and have therefore becomecurrent common cathode materials.
With the widespread use of digital products such as mobile phones and notebook computers, lithium-ion batteries have been widely used in these products due to their excellent performance and are gradually developing into more other product application areas.
In 1998, Tianjin Energy Source Research Institute began commercial production of lithium-ion batteries.
On July 15, 2018, we learned from Keda Coal Chemistry Research Institute that a special carbon anode material for high capacity and high density lithium batteries, composed of pure carbon as the main component, was launched at the institute. This type of lithium batteries made from new materials can achieve a range of more than 600 kilometers.
In October 2018, the research group of professors Liang Jiajie and Chin Yongsheng of Nankai University and the research group of Jiangsu Normal University Lai Chao successfully prepared a three-dimensional porous support of silver-graphene nanowires with a hierarchical structure. and loaded it with lithium metal as a composite anode material. This media can inhibit the generation of lithium dendrites, thereby enabling ultra-fast charging of batteries, which should significantly extend the "life" of lithium batteries. The research results were published in the latest issue of “Advanced Materials”.
One million car purchase subsidies
After using the lithium battery street lamp for 2 years and removing it for six months, the is battery still useful?
The three main Chinese lithium industries areGanfeng Lithium Industry, Tianqi Lithium Industry and Tibet Everest. Ganfeng Lithium Industry has more than 20 million tons of lithium resources with very high purity and very low lithium extraction cost. Its current market value is 230 billion.
Tianqi Lithium has lithium reserves of more than 10 million tons, relatively high purity and low lithium extraction cost. Its current market value is 150 billion. Mount Everest in Tibet has 12 million tons of lithium ore reserves, the purity of which is very high and the cost of mining lithium is very low. The current market value is 30 billion.
The future development direction of lithium battery industry
From a technical point of view, the technical path for lithium batteries lithium is of course to continue to improve the density of batteries. and fast charging technology. At present, there is still relatively large room for development.
For example, the current highest level of the national new energy subsidy policy is 160 Wh/kg. In 2018, Tesla announced that the 21700 battery system jointly developed with Panasonic had an energy density of 300 Wh/kg. It can be seen that in terms of high-density lithium batteries, the current technology still has a lot of room for improvement.
But on the other hand, lithium batteries also have their limitations, such as charging speed and battery weight, which make electric vehicles cannot be so convenient to make refuel and drive than gasoline vehicles. Whether it's improving battery density or improving fast charging technology, there are limits. For example, fast charging is based on the battery capacity of NIO ES8 84KW, whether it needs to be fully charged in half an hour, the power of the charging pile. must reachthe level of 160KW/H. It's civil. The application project is relatively large and does not lend itself to popularization.
Therefore, the lithium battery path may not completely replace gasoline vehicles, and new energy sources will not be limited to lithium batteries. At present, we can see that hydrogen fuel cells are more suitable. From the changes in subsidy policies, we can see that from this year, hydrogen fuel cell subsidies will enter a phase equivalent to lithium battery subsidies in previous years.
Lithium battery is a common battery type with the advantages of high energy density, long life and environmental protection. It is therefore widely used in various electronic devices and energy storage systems, includings street lamps. So, if a lithium battery street light is used for 2 years and then removed for six months, can the battery still be used?
First of all, the lifespan of lithium batteries is generally measured by the number of charge and discharge cycles. Generally speaking, the lifespan of lithium batteries is between 300 and 500 cycles, depending on the quality of the battery and the conditions of use. If a lithium battery street light is charged and discharged once a day, its usage life is about 730 cycles in 2 years. Based on this calculation, the number of battery cycles may approach or exceed the upper limit of its lifespan.
Second, the capacity of lithium batteries will gradually decrease as the usage time increases. Indeed, during the charging and discharging process of lithium batteries, lithium ions migrate between the positive electrodes et negative, forming a solid electrolyte interface layer, leading to loss of battery capacity. Therefore, after 2 years of use, the capacity of this battery may have decreased.
In addition, lithium batteries naturally discharge when not used for a long period of time, resulting in further loss of battery capacity. If the battery is not charged and maintained within six months of removal, the battery capacity may further decrease.
In summary, after 2 years of use and six months of inactivity, the battery capacity of this lithium battery street light may have decreased, and may even have exceeded its acceptable range. Therefore, it is recommended to perform charging maintenance and capacity tests on the battery before reuse to ensure its performance and safety.
In addition, lithium batteries are a special type of batteryie which requires specialized handling and recycling. If the battery can no longer be used, it must be sent to a specialist recycling agency for treatment to avoid pollution and damage to the environment.