Canada to use nanotechnology to develop new lithium-sulfur battery

Canada to use nanotechnology to develop new lithium-sulfur battery

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Sony laptop battery,

Researchers at University of Waterloo, Canada May 18 said they made more than a traditional large capacity lithium battery 3 times the lithium-sulfur battery prototype. The date of the relevant research published in the “natural materials” online magazine.

Lithium-sulfur batteries have a very broad application prospects, chemists have therefore conducted the study over the past 20 years. Sulfur and lithium is considered the most ideal material for a battery, these two chemicals in combination can not only provide high energy density, stability, security and better life also. In addition, the cost, the price of sulfur is also far lower than current lithium batteries are widely used in the other materials.

However, the manufacture of cathode battery problems has been a major problem of people,PCG-Z505 , partly responsible for the charge and discharge and release of electronic storage, in which reversible electrochemical reaction in order to achieve a higher current, which must be similar to the sulfur and carbon Such a conductor in close contact, and after a very effective way to no.

University of Waterloo professor琳达纳扎尔research team led by technology through the nano-carbon and sulfur close integration. They used in the experiment is known as a porous carbon mesoporous carbon material. In the nano-level, this type of carbon in the pore size and pore volume is very consistent. Through nano-technology, the group will produce a hollow carbon tubes, each 6.5 nanometer thick, 3-4 nano-aperture. Sulfur may be due to heating and melting, when the exposure to carbon nanotubes after they are inhaled and solidification contraction for sulfur nanofibers. Through electron microscopy studies on the perfusion of the carbon nanotubes have sulfur profile inspection found that in all of the aperture in both full of sulfur,PCG-V505, carbon and sulfur to achieve a perfect combination.

Nazarbayev said that by such a composite material made of battery power by up to 80% of the theoretical value, but also in maintaining a lower cost, good stability and a better circulation of the premise, its energy density than traditional lithium - transition metal oxide cathode of the battery into the high-3 times. This porous carbon materials “sucked up” technology to other composite material also provides a new way. Study in the future they will also further improve the structure of such a cathode material and performance.

Global progress in standardization of automotive batteries

Monday, May 25th, 2009

Electric vehicles in the seminar “EVS24″ on a number of organizations have on the plug-electric hybrid (PHEV) with charging systems, and automotive lithium-ion rechargeable laptop battery to deliver a speech to the standardization. PHEV,PCG-R505, the International Electrotechnical Commission standard (IEC), International Organization for Standardization (ISO) and the United States mobile Engineers (Society of Automotive Engineers, SAE) were introduced in the standardization of their efforts, which include the standardization of specifications for connecting PHEV charging facilities and communication technologies and systems. Standardization activities of these bodies by German companies (ISO), French companies (IEC) and the American Enterprise (SAE) led the implementation.

Standardization of PHEV

IEC and ISO for the realization of PHEV charging facilities and the connection of the standardization activities carried out is aimed at reunification of the two groups of “IEC / ISO JWG V2G (joint working group vehicle to grid)” organizations. German energy company RWE AG famous Ingo Diefenbach on the progress of the work of the Organization delivered a speech.

IEC / ISO JWG V2G has two working groups (WG). One is related with the physical specifications of WG1. VGP-BPS8,Include specific work on the connector, cable, both the protection and power switch backplanes, such as 2P700 , 312-0279 , 312-0383 , 312-0386 , 312-3250 . In the more controversial aspects of the connector, IEC envisages only be used to connect charging devices and automobiles, and made the largest three-phase AC voltage 500V, 63A maximum current and terminal 7 (3 for power supply, one for ground used for the two signals, one for other purposes) and so on.

The other is related to communication technologies and WG2. Including the more secure methods of communication and communication services. Focus on the content while making it clear that the circumstances at the same time to determine the specifications Inspiron XPS M170 battery , as well as to ensure that the interconnected nature of the communication protocol. IEC / ISO JWG V2G will be summarized in the 09 years the results of the above topics and to develop the program, the mid-2010, intends to vote, to develop standards by the end of 2010. Although the IEC and ISO views seem more unified, but currently “there are still large differences” (Ingo Diefenbach).

On the other hand, research institutions in the U.S. Argonne National Laboratory (Argonne National Laboratory) on the Theodore Bohn progress in the standardization of SAE delivered a speech. PHEV standardization, SAE group generally consists of two specifications.VGP-BPS9, PHEV were used to connect the specification and infrastructure group,