Institute of Industrial Science and Technology of Japan and the Japan Society for the Promotion has developed a new structure of lithium - air batteries.
Lithium - the concept of air inspiron 1520 battery have brought up for many years. Because we see the positive use of oxygen in the air as the active material, so in theory the capacity of positive density is infinite, and can increase the capacity. In addition, if used lithium metal anode, theoretical capacity can be improved a few than lithium-ion rechargeable battery
However, lithium - air battery so far is not popular,such as inspiron 6000 battery . The reason is there is a fatal flaw, it is that reaction products of solid lithium oxide (Li2O) accumulate in the anode, so that the electrolyte had been cut off contact with the air, leading to discharge stops.
Japan & Research Institute divided electrolyte of Dell inspiron 1525 battery into two kinds tio solve this problem. In the negative (lithium) side, make used of organic electrolyte in the cathode (air) side of the use of water-based electrolyte. Set between the two electrolyte lithium-ion only through the solid electrolyte membrane to divide them. This will prevent the electrolyte mixture, and to promote the battery react.
Make Use of lithium metal anode. Cathode is used in combination with the electrolyte containing organic lithium salt electrolyte. Although we can not abandon the organic solvent, but it limits the use.
In the Dell latitude d600 battery , generation by the discharge reaction is not a solid Li2O, but the LiOH (lithium hydroxide) easily dissolved in the aqueous electrolyte . Therefore after the oxidation of lithium accumulat in the air ,it does not lead to work to stopp In addition, water and nitrogen can not go through the solid electrolyte, so there is no place with a lithium metal anode reaction risk.
At 0.1A / g discharge rate to discharge, the discharge capacity is about 9000mAh / g. The previous lithium - air Dell inspiron 1721 battery discharge capacity is only 700 ~ 3000mAh / g, it can increase capacity.
In addition, if make use of aqueous solution to replace the water-soluble gel ,it can be in the air to 0.1A / g discharge rate of continuous discharge for 20 days, the discharge capacity is about 50000 mAh / g, the number is higher than the original. As the lithium metal battery, battery capacity had a high a number than lithium-ion battery,like Dell latitude d830 battery , so the value of a total of is more high double-digit than lithium-ion rechargeable batteries. performance solution is high, but gel is even better in ease of use. In the future we need to consider which of these two is worth for developing.
This technology could also consider a different ways for rechargeable batteries. If battery is not charged , but replace the cathode through the aqueous base electrolyte, card boxes, etc. in order to recharge the lithium metal anode, cars will be no need to charge waiting time, immediately running. Through the recycling of used water-based electrolyte, the electric means to regenerate lithium, but also achieve the repeated use of lithium from latitude d600 battery . It can be said it is a new type of lithium-fueled fuel cells .
The article via: laptopinfo
Related articles: laptop-batteries
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