Is lithium iron phosphate suitable for fast charging? The crisis of lithium iron phosphate. The biggest obstacle to the development of new energy vehicles is the range and charging time, improve energy density and fast charging has become the two major goals of battery companies. Lithium iron phosphate battery has a high efficiency output, can be quickly charged, no pollution to the environment and other advantages. Some people believe that lithium iron phosphate is suitable for fast charging? There are two sides to this issue.
Lithium iron phosphate is not suitable for fast charging?
Traditional lithium iron phosphate battery due to poor electrical conductivity, fast charging is easy to heat, affecting battery life, so improve the electrical conductivity of the material, improve the battery thermal management system, through technical innovation to supplement the shortage, lithium iron phosphate in fast charging promising. In the fast charging market, lithium titanate, lithium manganate each occupy a certain share, and lithium iron phosphate fast charging in this year's development is also remarkable, has achieved rapid development.
Regular lithium iron phosphate battery is fast charging, using 2C current should be allowed. Some people in the industry believe that lithium iron phosphate is not suitable for fast charging, from the material point of view, lithium iron phosphate material has a relatively low intrinsic conductivity, only one percent of the ternary material, the need to optimize the conductivity of lithium iron phosphate material to meet the needs of fast charging.
After CATL's transformation, lithium iron phosphate is not "the original lithium iron phosphate", even better than ternary materials. In the anode, CATL developed a "superconducting electronic network" technology, making lithium iron phosphate has excellent electronic conductivity, up to 1000 times that of ternary materials.
The cycle performance of the current lithium iron phosphate fast-charging battery is better than the non-fast-charging, in principle, the cycle performance and charging is not contradictory. Then why is the traditional battery cycle with fast charging is not good? That is because the traditional battery is not designed for fast charging, there will be by-products or side reactions when fast charging, and after more side reactions, the cycle naturally becomes worse. Once the kinetic problem of fast charging is solved, its cycle at least will not become worse.
At the same time, fast-charging batteries not only have high kinetics, but also because the energy density is a little lower than non-fast-charging, low energy density, more electrolyte, it is not surprising that the cycle becomes better. In fact, the lithium iron phosphate batteries they are currently developing can reach 10,000 cycles. With the withdrawal of subsidies in 2020, the whole market will be reshuffled. Cost and efficiency will be the core of market considerations, for the commercial sector, there will be more considerations for integrated operations, and fast charging is a more urgent need than energy density.
Opportunities for lithium iron phosphate batteries.
Safety, cycle life, price is the advantage of lithium iron phosphate materials, with the energy density bottleneck breakthrough, subsidies out and the flowering of market segments, lithium iron phosphate may win more market space.
Lithium iron phosphate energy density increase of about 10% per year, in 2020 will reach the limit, when the technical threshold to the same level, the industry will enter the stage of fighting capacity scale, fighting cost control. Coupled with lithium iron phosphate material prices are on a downward trend, to be subsidized out, the advantages of lithium iron phosphate will be more prominent.
As lithium iron phosphate battery performance, price is more in line with the energy storage side of the market use, many optimists believe that the grid side of the energy storage market is the first to take off, I believe that next year will also bring a new wave of lithium iron phosphate material application opportunities.
The danger of lithium iron phosphate batteries.
Although the lithium iron phosphate market shows signs of recovery, but both in the field of lithium iron phosphate materials, or for the main focus on lithium iron phosphate companies, market development and the competitive landscape still has many uncertainties.
Power battery companies lithium iron phosphate product gross margin and profitability has been continuously compressed. To further enhance the market share of applications, battery companies not only in product upgrades, energy density improvement efforts, but also in the scale of production capacity, cost control, product series research and development on the advantages of the ultimate, business competition to have more opportunities.
Compared with ternary lithium batteries, lithium iron phosphate recycling utilization rate is low, the lack of profitability, and even recycled materials recycling at a loss, which leads to lithium iron phosphate recycling not only can not bring benefits, but also become a drag.
In summary: lithium iron phosphate has been in the battery system over the years in the lead, lithium iron phosphate found a new breakthrough point in the fast charging to other battery information system launched a battle. Can foresee that in the future, with fast charging "one trick pony", lithium iron phosphate will be able to go farther.
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