2009年5月26日 星期二
"Honeycomb" Crystal available
Super "Honeycomb" Crystal debut is expected for the hydrogen fuel cell vehicles in the storage dell inspiron 510m battery , dell inspiron 600m battery
U.S. scientists have invented a super "honeycomb" crystal, filled with numerous internal microporous If all can extend to a total area of "staggering." This new invention is expected for fuel cell vehicles in the storage of hydrogen.
According to the latest issue of "Nature" magazine, only 1 gram of such a crystal, its internal pore surface area and the equivalent of 17 tennis courts on such a big area microporous crystal set a new record. The previous record is that 1 gram of crystal and the pore size is equivalent to the size of 12 tennis courts.
Arbor University of Michigan by the United States, who invented this new type of molecular crystals from zinc oxide and a carbon compounds constitutes the molecular interaction, the formation of a strong lattice structure, with the tremendous internal surface area.
Although this called "MOF-177" new type of crystal is still at an experimental stage, but the invention of hope, it may in future be used for fuel cell vehicle hydrogen storage. Porous crystal chemical industry is an important area of research.
Advent of a new type of lithium battery car
February 8, Kuroiso city in Japan, engineers in the pre-test a new type of electric vehicles "Eliica". Keio University in Japan invented such a lithium dell latitude d500 battery-powered cars by the eight wheels, more than 315 km per hour, will be in Italy next month to test its maximum speed of 400 kilometers.
Six months to complete the triple jump
In less than six months time, Veken Group has acquired the domestic first third of Ningbo Baowang Battery Co., Ltd., the world's third after the U.S. giant battery RENOV Capital companies. Yesterday, it joined hands the world's top 500 companies ranked No. 16 and Itochu of Japan, the world's leading enterprises in polymer lithium 6y270, c1295,dell inspiron 500m battery company in Denmark Danionics. The frequency of "triple jump", showing the Veken domestic battery energy industry, "the new hegemony" ambition.
Veken Group aimed at the battery of the development prospects of the energy industry to holding Baowang as the breakthrough point, determined in July last year to enter the battery energy industry. Following the successful implementation of the capital and RENOV cooperation, Veken will reach out into the prospect of a more representative of the polymer lithium battery cell production. Yesterday, with Japan's Itochu, Denmark Danionics company reached an agreement to set up joint venture in Ningbo, the production of notebook batteries, cell phone batteries, PDA batteries and battery-power batteries, such as high-grade. A company, the second phase investment of 100 million U.S. dollars, respectively, completed the second phase is expected to achieve sales of 400 million U.S. dollars. Veken Energy Technology Investment Co., Ltd. Zhu Guangyao Chairman said that this new Baowang will bring a qualitative leap in the energy sector to achieve Veken product mix, at the same time, it will further optimize the industrial structure Ningbo battery.
2009年3月18日 星期三
Mercury-free alkaline manganese battery of technical issues that need to be resolved(c)
Mercury-free Process and Control
(1) to improve the electrical conductivity properties of zinc ointment
Mercury’s “wet” between zinc and zinc help with the collection of fluid connection between the (sticky) Then, to improve the conductivity of zinc ointment, so that the battery has a good anti-vibration performance. Go mercury dell laptop battery, dell g5260 battery, dell g5266 battery, dell latitude cpi battery, the conductivity decreased significantly. Conductive paste to improve the performance of zinc from the use of high viscosity stability Thickening good zinc cream, zinc cream in an appropriate increase in the proportion of zinc in zinc paste and add a few other conductive material aspects.
(2) to control pollution in the production process
Mercury-free alkaline manganese battery production must be kept clean and pollution-free production environment of the production process. According to the battery industry experience, the general requirements for the production of wet conditions at constant temperature, the appropriate temperature of 20 ℃ ~ 28 ℃, humidity 30% ~ 60% (RH). Not suitable for negative electrode assembly assembly at low temperatures, the steel should not be coated graphite conductive at high humidity conditions. Entire production process to be clean, to prevent hydrogen evolution into making zinc impurities increase. Intermittent parts processing, many manual, fittings beyond the control of pollution, the quality can not be assured.
(3) control of carbonated
Effective control of the production process is the carbonation anode are mercury-free alkaline manganese batteries, one of important process measures. First of all, to control the concentration of CO2 in air, zinc ointment preparation conditions in a vacuum, the electrolyte, zinc paste, cathode powder must be sealed packaging, KOH, such as mercury-free zinc powder should minimize exposure to air time, packing damaged should put an end to the use and so on. Sealing process equipment and transfer the former track security guard shall add, to reduce air exchange to prevent the battery carbonated products. Batteries should also be noted that control online time, mercury-free battery production in exceptional circumstances the longest downtime in general may not be more than two hours. The reliability of domestic equipment relatively poor, prone to failure, equipment failure should be to prevent the contingency measures.
(4) the attention of Cu and ultra-fine zinc powder on the impact of mercury-free dell inspiron 8200 battery, dell inspiron 8000 battery , dell inspiron 8100 battery, dell inspiron 4000 battery
At alkaline manganese battery copper cathode in the basic state to compound exist in the role of electric potential, the easy migration to the anode, the zinc anode batteries go because of mercury, has accelerated the relocation of ultrafine particles to the cathode, when the diaphragm tube defects have points when, Cu2 + and Zn deficiencies in point happened in the redox reaction, the formation of copper hydroxide crystal sticks gradually penetrate the membrane, forming a short circuit. The production process must be strictly controlled Cu pollution, mercury-free zinc powder in the ultrafine particles there should be restrictions to prevent the migration of zinc powder to form short-circuit the battery.
(5) is more suitable for studies of mercury-free battery capacity requirements and improve the new structure
Made alkaline manganese battery is still the current structure of Japan’s Fuji prevailing on the sealed form, because of mercury-free alkaline manganese batteries Analysis of gas increases, the reliability of such a structure is open to question. Des films with cathode assembly more conducive sealed nylon because of the consistency is better, mercury-free alkaline manganese batteries to consider the reliability of seals from polypropylene nylon than good, unfortunately the high cost of nylon ring. Europe and the United States structure of alkaline-manganese battery is worth drawing on our country, besides a reliable seal, the cell can make use of space has become larger and more conducive to the improvement of dell inspiron 4100 battery, dell inspiron 2500 battery, dell latitude cpx battery, dell latitude c600 battery capacity.
Mercury-free alkaline manganese battery of technical issues that need to be resolved(b)
Equipment for the assembly of the main mold material there is bad, do not wear-resistant, dust pollution is serious and so on. Mechanical plant should be strengthened with metal materials research department collaboration, select the applicable cathode ring mold materials and heat treatment method.
Raw materials and spare parts
To promote mercury-free alkaline manganese dell laptop battery, dell inspiron 6000 battery, dell gd761 battery, dell c1295 battery, the process, it is necessary to down-to-earth manner, some base building. Mercury-free alkaline manganese batteries need to be dedicated to further improve the quality of EMD, in particular heavy metal impurities are no longer content to be reduced, but also improve the battery at high voltage potential and discharge capacity of the whole point of martial arts.
For alkaline manganese batteries graphite powder, a lot are processed by the squamous form of graphite, and graphite in squamous Fe, Cu and other elements with a high level. Without effective control measures and testing means, such graphite production of mercury-free batteries, can lead to major quality accidents.
China has not completely mercury-free zinc clearance from the selection of high-quality zinc starting material, but also must look at appropriate processing methods. Al with Ca in place of the In-Bi 1 Ca zinc alloy is more conducive to reduce the mercury-free alkaline manganese battery storage period of chronic short-circuit. Analysis selection depth of discharge gas on the low zinc dependent solution are mercury-free dell d5318 battery, dell 75uyf battery, dell inspiron 6400 battery, dell 6y270 battery storage and resistance to leakage of important performance measures.
Alkaline manganese batteries divide need to further improve performance, improve density and uniformity, increase block. Korea provided technology divide winding spiral winding method, to meet the requirements for mercury-free, to recommend appropriate winding adjust the angle so that the effective increase in low-rise. Reduce the membrane thickness of paper to increase the winding layers, which is the international alkaline manganese battery industry is a tendency.
CMC, such as traditional zinc ointment Thickening the use of mercury-free zinc powder stability variation, can not meet the requirements of mercury-free battery. To enhance the mercury-free alkaline manganese batteries of anti-vibration performance and storage performance, the proposed selection of PA and PA 1 Na high viscosity, good stability of zinc paste thickener, and select the appropriate ratio, the performance of battery will be more the desired results. Alkaline manganese battery of standardized parts alkaline manganese batteries are mercury-free implementation of the basic conditions. Alkaline manganese battery set up some spare parts base, strengthen the quality control of parts of the alkaline manganese battery improve the quality of implementation of mercury-free alkaline manganese dell inspiron 9300 battery, dell inspiron 9400 battery, 310-6321 battery, 310-6322 battery is very important.
Mercury-free alkaline manganese battery of technical issues that need to be resolved(a)
Mercury-free alkaline manganese battery of technical issues involved in the following areas:
Mechanical equipment and tooling moldChina’s industrialization late alkaline manganese batteries, mercury-free technology by the study because of equipment, spare parts and materials to such constraints is still in its infancy, especially for low, mercury-free alkaline manganese aspire 1300 battery, compaq presario x6000 battery production of domestic machinery and equipment not yet sophisticated, the vast majority of plant is still used for intermittent production of equipment, spare parts processing, tooling mold has not yet considered mercury-free requirements.Anode preparation equipment is currently in use is still the largest pharmaceutical machinery, including the mixed powder, tablet or relief rolled article, into tablets, screening and preparation, such as zinc cream. Equipment exist the following main aspects:
(1) mold tooling, machinery and equipment did not attach importance to material corrosion resistance, stability and wear resistance, particularly in domestic equipment. Mixing barrels, roll, zinc cream containers, etc., etc. Although the use of high-grade stainless steel materials, it has still not reached the requirements for mercury-free, ordinary stainless steel corrosion, oxidation and wear resistance are inferior. Mercury-free alkaline manganese battery anode of Fe, Mo and other elements is 7 ~ 10 1 10 1 6 control, materials corrosion, electrochemical reaction and mechanical factors such as the anode is likely to result in more than the allowable values of impurity elements. Korea’s Rocket anode preparation equipment required to adapt to mercury-free and consider a more comprehensive, it is worth drawing on its inner wall mixing machine the wear-resistant non-metallic coating material, contact zinc cream containers full of machinery and the use of engineering plastics, completely avoid metal impurities mixed people.Acer battery, Apple battery, Asus battery
(2) genuine low rate of serious cross-contamination. By the mixed powder to screen out qualified silt, general equipment into tablets in a 65% rate is only about 2 / 3 for the unqualified goods, required repeated at several machine cycle, this increase in cross-cathode powder pollution. While Europe and the United States of powder processing systems, its first rate into tablets of 65% ~ 80%, greatly reduces equipment wear and particles of cross-contamination.
(3) of the equipment Chuan (to) the use of moving parts of copper and other harmful metals. Mercury-free alkaline manganese batteries are particularly sensitive to copper cathode, copper cathode and other impurities mixed powder people are caused by chronic mercury-free Compaq battery, Dell battery short circuit potential.
(4) alkaline medium conditions, drying process easily lead carbonate powder cathode, and also prone to cross-contamination. High concentrations of lead carbonate are alkaline batteries climb one of the factors for mercury-free alkaline manganese batteries require higher concentrations of carbonate.
(5) anode current collector assembly also mainly depend on domestic add mechanical intermittent manual processing. On aspects of product quality by man-made factors, on the other hand, such processing can not meet the requirements for mercury-free. This is also the necessary machinery and equipment, one of the problems as soon as possible. Set nail and negative flow at the end of the welding method is also worthy of study, are currently widely used by DC energy storage explosion welding, this welding of copper is not easily lead to contamination collector assembly, are caused by mercury-free alkaline manganese batteries short-circuit an important risk of chronic . Import anode current collector assembly equipment required hundreds of thousands or even hundreds of million yuan, the battery should be attached great importance to the mechanical plant equipment, research and development, improve labor productivity is also an important aspect. Fujitsu battery, HP battery, IBM battery, Sony battery, Toshiba battery