Lithium-iron battery has become the domestic and Europe and the United States Laptop Battery over the next decade the most important electric cars lithium battery materials, batteries at the current exhibition in China, in addition to the original familiar BYD, Suzhou Star Constant power supply makers to participate, another fu from the United States San Jia Li-ion battery AABC car show to return to Taiwan, Li-Kai (Aleees) Among this year's venue, but also close attention.
Early in June, Taiwan's Li-Kai power and the Taiwan Synchrotron Radiation Research Center (NSRRC) ran off in the U.S. automotive lithium exhibition, published a new lithium iron phosphate cathode material for a total of olivine crystals: LFP-NCO (Nano-Co-crystalline Olivine), LiFePO4 · zMO (MO = metal oxide) by the end of June, but also prompt return of the San Jia in Beijing at the China Battery Exhibition, in addition to the material properties of a new recognition of the trade, in addition, a more eye-catching show with the huge scale of and educate the public of the important energy-saving emission reduction.
In an interview with Beijing TV interview, Aleees marketing department spokesman for the Su Xiu Xiu mentioned that, in countries around the world have invested heavily in R & D announced that electric car, while living in the key face of the cathode material patents and product features fierce competition, Aleees the development of lithium iron phosphate crystal material has a total cost advantage, a good consistency and a high-performance capacitance play, cost-effective even beyond the industry's expectations for the lithium battery power by domestic and foreign manufacturers panasonic CGR-D08 battery with a high degree of attention and a substantial increase the impetus for the performance of lithium batteries, for environmental protection and energy saving industry, provide a new solution.
At the same time in the past two years, Aleees actively involved in the cause of the domestic ranks of electric cars, and electric car industry has made tremendous contributions to:
1.nbspnbspnbspnbspnbsp Aleees in the country provides the world's most cost-effective lithium-iron material with excellent quality at the same time significantly enhanced the yield lithium battery electric vehicles, an increase of 40% of the profits of the downstream customers.
2.nbspnbspnbspnbspnbsp Aleees the price of lithium iron battery materials, compare United States and Europe reduced 60%, Aleees practical action in support of the cause of the domestic electric vehicles. To reduce dependence on oil and thus enhance China's energy security.
3.nbspnbspnbspnbspnbsp Aleees through the company's co-operation with domestic battery, making the price of lithium-iron battery, comparing European and American countries at the same level battery factory, reducing by 60% of the cost, an increase of 25% of the lithium battery Laptop Battery capacity, all the lithium-iron battery indicator Japan and South Korea all of Europe and the United States are the leading manufacturers, greatly elevated China's battery in the international competitiveness.
Also at the show among the academia and the industry in the lithium batteries at home and abroad are renowned researcher Dr. Huang Xuejie Chinese Academy of Sciences, said that with the coming oil shortage, in the past in order to dominate the internal combustion engine for the automotive industry, will soon become dominated by the Li-ion rechargeable battery industries will be the era of electric vehicles, while China will surpass Japan to become even more is the world's largest Li-ion battery manufacturing center Dr. Huang Xuejie look forward to having more and more companies such as Aleees right along this path, continue with a more number of partners together to enhance the industry's core competitiveness.
Taiwan Power Technology Co., Ltd. Li-Kai (Aleees), participated in the 2009 Long Beach, California in the United States of Advaned Automotive Battery and EC Capacitor Conference (hereinafter referred to as AABC) exhibition, from June 8 to June 12 for five days display, and with Exxon Mobil, Hitachi, A123, Toyota, Honda, SK energy, LG chemical and the U.S. Department of Energy the same as the main sponsor, which Aleees also held in the June 11 lunch lectures, to Asia, Europe and the United States people that lithium batteries for electric vehicles and energy-saving industry, the contribution of emission reduction, access to a warm response from all walks of life, during which a number of car dealers and battery manufacturers to produce materials for Aleees a high degree of interest and inquiry.
At the same time, Aleees also invited Taiwan Synchrotron Radiation Research Center (NSRRC) Dr. Wu for Aleees the development of a new lithium panasonic NV-DS30 battery iron phosphate (Lithium iron phosphate, LFP) Cathode Materials: LFP-NCO (Nano-Co-crystalline Olivine), LiFePO4 · zMO (MO = metal oxide) for lithium-ion battery of new technologies for the industry to profile. X-ray diffraction analysis (X ray diffraction), electron microscopy (scanning electron microscope, SEM), SEM / EDS (Scanning Electron Microscope with Energy Dispersive Spectrometer), transmission electron microscopy (Transmission electron microscopy, TEM) analysis, extended X-ray crystal X-ray Absorption Fine Structure Analysis (Extended X-ray absorption for fine structure, EXAFS) and other high-precision equipment analysis, confirm the properties of the materials and differentiation. From the TEM analysis on all the metal oxides are uniformly dispersed in the particles which shows that non-by-coated metal oxides or three exist in the form of mixed particles, but rather exists in the way of crystallization.
This technology developed by LFP-NCO materials can significantly improve the traditional lithium iron phosphate material with low conductivity, impurities and more problems, and provide customers with cost-effective products. The participants for a new lithium iron phosphate material are extremely excited about the new development, so that the application of battery power to produce excellent performance.
LFP-NCO of the particle size distribution is very uniform,panasonic PV-BP17 battery D50 particle size of 6 microns, D95 particle size of 10 microns or less and characterization of a single peak, another from the electron microscope, all the particle size of the particles show a good consistency. The physical characteristics of a stable battery manufacturers to provide a stable production and decrease in cost, reduction of defect generation. G generated by the same time, the capacitance characteristics of good, button batteries 0.1C discharge, the Croatian electric capacity to play up to 155 mA h / g, while the capacitance is to play up to 0.2C g 130 mA h / g, so that power batteries to play the electric capacity of the battery beyond the current industry expectations.
From the industry point of view, Aleees considered relevant by the industry must solve the vehicle battery to poor quality, high price of the issue, including China, the entire industry and can not be fully expect the taxpayers to subsidize to solve, but rather should be Li-ion battery co-operation of upstream and downstream firms to be overcome.
Aleees that the current industry-accepted by the battery for the price that consumers can not get the attention it deserves, panasonic VW-VBD210 battery a PHEV40 price of lithium batteries two trillion U.S. dollars, consumer enthusiasm for environmental protection will be high prices dampen the battery. Aleees that within two years, Asia's automotive lithium battery manufacturers can generally reach USD1 / Ah objectives, such price changes can make PHEV40 lower prices for consumers to purchase more than 50% this way with the Government 10 City 1000 plan, can effectively accelerate the expansion of Li-ion battery applications in the Chinese market, making electric car industry in the Chinese market to bear fruit.
From a technical point of view, Aleees that although the LFP has been generally regarded as a vehicle lithium battery safety issues and pricing issues, one of the analytical process, but due to the prevalence of LFP upstream materials over the past two-valent iron is difficult to control, as well as electrical conductivity due to good question, making lithium-ion batteries manufactured by manufacturers of lithium batteries, mostly there is not as good as the expected yield and capacity problems in such a question also makes the LFP battery price has not yet reached USD1 / Ah technical key Aleees believe that China has a number of home Doping by the way vendors have successfully solved the problem of a poor electrical conductivity, but still there are two panasonic CGA-DU21 battery hidden ferrous beyond our control, so that makes the potential problem of price and quality lithium batteries are still disturbing.
At the same time the face of strong foreign competition and commercial interference with the patent means, making China the world's lithium batteries into the door is not easy questions. LFP materials as the sole representative of the Asian manufacturers Sanjia AABC's Aleees that this issue still have to work together to solve the world's manufacturers, over the past fourteen years, LFP due to the existence of the patent monopoly, hindered the development of LFP at the moment the patent The issue of monopoly no longer exists, the Chinese manufacturers should take advantage of this opportunity to strengthen cooperation and exchanges, co-operation as soon as possible so that the battery manufacturers have a stable quality, panasonic CGA-DU14 battery affordable LFP upstream materials, allowing electric vehicles to expeditiously complete the Sheung ideal.

Lithium-ion rechargeable battery from the 20th century, the early 90s has been officially practical,Laptop Battery in less than 20 years, the capacity of a rapid increase in the market growing rapidly. Is estimated that in the future will be extended to the use of portable electric vehicles and environmentally friendly power-storage and other fields.
Lithium-ion rechargeable battery for the status and issues and the future direction of development of an interview from the practical stage for many years prior to the study in the development, known as the father of the original lithium batteries Sony's chief executive, executive director of the Spanish-American thread. (Interviewer: Security Hideo)

Q: Lithium-ion rechargeable batteries are used to how to expand up?

West: 90 years in the 20th century the import issue, we once made home video cameras,canon CV-11 battery and MD players, AV products as the application of lithium-ion rechargeable battery goal. But at that time a very small production alone can fully meet the market simply did not anticipate that the battery will become mainstream products.

However, soon begin using lithium-ion laptop battery, from this market began to expand rapidly. It is learned that at that time played a computer makers "in from New York to Los Angeles in five hours flight itinerary without charge," the advertisements played an important role. Period to period from universal prosperity and promoting the development of lithium-ion rechargeable batteries for notebook computers, and then a cell phone.

Into the 21st century, the lithium-ion batteries began to be digital cameras, power tools (PowerTool) and game consoles such as adoption. The face of the building of low-carbon society in the future requirements of the times, it is estimated will be its use in future hybrid vehicles, electric vehicles, industrial and household fixed power supplies expand.

Lithium-ion rechargeable battery along with technological development, its energy density is increasing every year. To ensure the safety measures canon BP-608 battery to be accumulated. These measures have contributed to market expansion.

Q: To improve the energy density is the key what? Energy density of the future will be raised?

West: to improve the energy density of batteries, there are two ways. First, generate electricity without reducing the contribution of the Ministry of material, such as thinning of positive and negative electrodes of the collector body and diaphragm to reduce the binder and conductive auxiliary materials. In short, through the battery designed to improve. But the limits of that approach.

Another method is to increase the electrode active material (positive and negative) of the unit weight or unit volume capacity. The material development has long been going on. LiCoO2 cathode of lithium-ion rechargeable battery from the start the start to almost close to the theoretical limit of the capacity to use, totally dependent on the improvement of battery capacity anode performance.

For example, the initial negative lithium-ion canon ZR-CV battery rechargeable battery using carbon (coke), its capacity 250mAh / g or so, the initial charge-discharge efficiency, but about 80%. And now the negative carbon (graphite) the ability to infinitely close to the theoretical capacity of 372mAh / g, the initial efficiency of more than 95%. Energy density respectively, in the early 200Wh/kg, 80Wh/kg to the present 600Wh/kg, 220Wh/kg.

However, in the negative use of carbon (graphite) under the condition of the battery capacity has now almost reached the theoretical limit, it is imperative that developing a new generation of negative. Alternate materials tin (Sn) and silicon (Si), the former theory, three times the capacity of graphite, which is 10 times higher than in the graphite.

On the other hand, cathode material in terms of capacity and basic living is not progress. Higher capacity than LiCoO2 cathode are LiNiO2, canon NB-2LH battery is expected to cathode capacity would be increased by 10 ~ 20%. However, LiNiO2 the issue of security is very large, is basically not used.

Recently, some products will be used lithium-ion rechargeable battery voltage up to 4.2V or more, such as 4.4V, the discharge current value is the same as the energy capacity (Wh) increase the cathode material.

As noted above, at least from the negative point of view, rising from the material capacity is correct.

Q: To improve the energy density, should pay attention to what is the problem?

West: using demand side is not necessarily limited to the capacity. Emphasis on output characteristics of some useful purpose, such as power tools, while the satellite with the auxiliary power focused on the cycle characteristics. Sometimes requires cycles to reach 15 million times, far more than canon NB-2L battery the computer battery.

Must take to meet the above requirements of materials and design methods. Of course, all properties have excellent battery is non-existent. Emphasis on performance, according to what is to decide what battery to use materials and adopt design.

And, not only to meet these multiple requirements, the security of this important and indispensable element must also be compliance. Therefore, the resulting safety factors must be considered and what the nature of the material, as well as how to develop materials to reduce these factors.

For example, if, as mentioned above, in order to Si as a negative, then negative capacity of carbon materials can reach more than 10 times, but also consider other features (such as load characteristics and cycle characteristics) and security. In addition, if we adopt the Si, followed the original cathode material, in order to maintain a balance with the negative,canon DM-MV30 battery positive living material need to be increased to 10 times the thickness of coating. But in fact, it is not possible.

In view of this, only individual to improve the negative, and not improve the characteristics of the battery itself, but also need to re-consider the positive electrode, electrolyte and separator and all other materials.

Finally to ensure the security problems facing developers face. High-energy battery is sealed in a limited narrow space. And use a little bit of a slow release of energy. Sometimes, however, for some reason, a sudden release of energy. Will cause an accident.

Capacity greater focus on the energy released could be higher, therefore a higher risk. Therefore, the greater the energy density, safety measures, the more important.

Increase energy capacity, with the corresponding security measures essential to the development.

Q: What is the key security measures?

West: As already mentioned, due to the higher canon BP-512 battery energy density, the greater the risk, so the more important security issues.

Is no single cause of the accident. Need to accurately grasp the positive active material, negative active material, electrolyte, separator, and binder and all other material in the process of charging and discharging the move and its impact mechanism of security.

Recently, the cost of increasing competition, the technical side and the seller proposed to reduce the cost of production sites have become increasingly demanding. Although you can think of replaced by cheaper materials and shorten the manufacturing cycle and other methods, but the technical aspects to be cognizant of these pairs of battery performance, particularly in security, impact of, maintaining a place can not make concessions uncompromising stance.

On the other hand, concern is not without using the party not in accordance with the battery designers to use the designated application situation. I have also heard that because of machine-building side strongly demands for fast charging, in its temptations, the charging voltage is designed to limit the phenomenon of more than 4.2V is also beginning to emerge.

In the lithium-ion rechargeable battery run-in period, the battery technicians and sales personnel to use the side with an introduction to the technical staff, clearly tell each other what to do and what not to do. Now sales are business-led, fewer and fewer such scenes.

Q: how to improve the strength of young technical personnel?

West: Lithium-ion rechargeable battery with the original battery is different from other chemicals except electrical, material aspects canon BP-511 battery of knowledge but also wide. These include organic chemistry (electrolyte, binder, diaphragm), polymer chemistry (divide, binder, gel electrolyte), metal (positive and negative collector body), ceramics (positive living material), carbon materials (anode ), etc..

Also, lithium-ion rechargeable battery applications, wide range of areas, use the method (charge and discharge conditions) are also diverse, so also need to understand the application of the machine a little. Therefore, can not shut ourselves in, "I am positive expert," such a narrow area. In mastering a wide range of knowledge (even if you can kick the tires) then, should be established areas of expertise.

Q: Could you tell us about the business system problems.

West: I hope that the battery manufacturers do not forget that more attention should be paid in relation to the cost of quality and safety principles. Otherwise, no matter how to improve the energy density and output characteristics, eventually will become a mirage.

Want to use lithium-ion rechargeable batteries and battery manufacturing side to the exchange Canon Camcorder battery of technical personnel to go to learn more about lithium-ion rechargeable battery is used. Of course, this issue is not only machine-building side, the battery designer must also pay attention.

U.S. Automotive News China, "Tokyo - Toyota Motor Corporation has developed a can significantly Compaq EVO N100 battery improve the storage capacity lithium-ion battery of new technologies, so as to develop a more practical electric cars provided an opportunity.

Toyota Motor Corp. spokesman Paul Nolasco said that this progress - the processing of single crystal lithium cobalt oxide - from Tohoku University in Japan on joint research.

This new technology toward a more adequate manufacturing capacity battery has taken a big step, but Nolasco declined to the possible increase in battery storage capacity, Compaq Evo N1020V battery or endurance mileage of electric vehicles for evaluation.

Japan's "Nikkei Business Daily" reported that the technology will ultimately make lithium-ion batteries can store 10 times its current capacity of similar cells. The newspaper said that this progress can be roughly 10 times the mileage increase. A higher storage capacity also enables the Toyota Motor Corporation reduce the battery size, weight and possible costs.

Lithium-ion batteries are seen as the key to mass marketing electric vehicles because they are more than current hybrid vehicles use nickel-metal hydride batteries lighter, and more abundant electricity.

However, the Toyota Motor Corporation to a large extent still have to bypass the electric vehicles Compaq Evo N1000C battery on the grounds that modern lithium-ion battery power is still too weak to contain, not for the all-electric drive system to provide sufficient endurance mileage vehicles.

"The Nikkei Business Daily" reported that Toyota Motor Corporation is now using lithium-ion battery cathode usually with multi-crystalline form of lithium cobalt oxide-doped graphite particles produced.

However, the use of single-crystal form, the Toyota Motor Corporation to reduce the use of graphite, which also helps to produce lithium-ion current to create more storage space.

The newspaper reported that non-graphite cathode may have to spend another 10 years to develop, and then lithium-ion battery should be able to store 10 times Compaq Evo N115 battery the current capacity of similar cells.