Keywords: charge materials surface treatment technology of lithium iron phosphate lithium battery
Massachusetts Institute of Technology researchers have invented a material charge surface treatment technology, the introduction of new technology for lithium-ion battery can be recharged in a few seconds to complete.
A rechargeable lithium battery generally require the completion of six minutes or longer. But traditional lithium iron phosphate material after surface treatment after the generation of nano-grooves may be to upgrade the battery charging rate of 36 times (only 10 seconds).
Can achieve rapid charge battery MIT sample timber
The use of the technology of lithium batteries is also a high rate of discharge, it can be used to accelerate the hybrid motor vehicles, so that speed of hybrid cars to catch up with the use of gasoline engine cars.
MIT has patented the technology and licensed to the two companies. MIT researchers say, because of this new technology is the basis of existing lithium-ion battery improvements, no new material, so there will be two years after the introduction of commercial products.
Guidance from Professor Gerbrand Ceder of the doctoral Byoungwoo Kang said, "Through the lithium iron phosphate material to deal with the surface of lithium-ion can rapidly move into the channel line-up was quickly sent to the terminal."
A few years ago, Ceder using computer lithium-ion batteries used in simulation of material found that lithium-ion than the transmission speed should be faster before imagined. In the subsequent in-depth simulation study found that: because of the surface material of lithium iron phosphate lithium-ion can be sent to bulk material (bulk material) within the limited number of channels, thus leading to rechargeable lithium-ion the process of the transmission speed has been restricted.
Through the accumulation of many years of experience, Kang and Ceder found: The lithium iron phosphate material surface treatment interval only to generate more than 5 nm groove can be lithium-ion transmission speed of 36 times.
"By adopting this technology, the battery will no longer be subject to charge lithium-ion transmission speed constraints. This means that after the lithium battery can be completed more quickly charge and discharge can be completed more quickly."
The researchers said that from now on mobile phones using this technology and other small devices with lithium batteries will be recharged in a few seconds to complete. For the emerging electric vehicle industry, this means that the speed of electric vehicles will be able to upgrade to a comparable car with gas.
This charge lithium battery technology for the existing product base and take two years, during which can be used in electric vehicles (electric car) chargers for home re-design to enable it to deal with the rapid energy transfer . For electric vehicles, the car battery at home, not only by the speed of charging the battery is also affected by the limitations imposed by the home owners the power to lift this limit.
So far tests show that the lithium iron phosphate material by the nano-scale surface treatment and the block after the durable materials, you can repeat the charge and discharge and will not affect the charging effect due to aging.
MIT research funding from the United States National Science Foundation (National Science Foundation), Materials Research Science and Engineering Center and the U.S. Department of Energy-sponsored program of advanced transportation batteries.
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