A new battery: Lithium - air batteries

In addition, the industry has also been the other attempts, while still using an organic solvent, but different is a new composition to improve the energy density of batteries(lenovo battery). This is the lithium - air batteries. In this attempt, the Japanese Institute of Industrial Science and Technology and Japan Society for the Promotion has developed a new structure of lithium - air batteries.

Lithium - the concept of air batteries have long brought up. Because the positive use of oxygen in the air as the active material, so in theory the capacity of positive density is infinite, can increase the capacity. In addition, if the use of lithium metal anode, theoretical capacity than lithium-ion rechargeable battery(thinkpad t60 battery,thinkpad t61 battery) to improve a few.

However, lithium - air batteries, so far none popularity. The reason is that there is a fatal flaw, namely, 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.
Made in Japan & Research Institute is divided into two kinds of electrolyte solution through this problem. In the negative (lithium) side of the use 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.

The negative use of lithium. 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. Water-based alkaline electrolyte cathode using water-soluble gel, and after the micro-based catalyst for the formation of oxides of carbon and low-cost combination of the positive.

In the cell, generated by the discharge reaction is not a solid Li2O, but easily dissolved in the aqueous electrolyte in the LiOH (lithium hydroxide). Therefore, the oxidation of lithium accumulation in the air after the electrode does not lead to work was stopped. In addition, water and nitrogen through the solid electrolyte and will not next door, so there is no place with a lithium metal anode reaction risk. Moreover, in charge, if the configuration-specific positive charge, but also conductive to prevent charge-induced corrosion and aging of the air electrode.

To 0.1A / g discharge rate of discharge, the discharge capacity is about 9000mAh / g. The previous lithium - air battery discharge capacity of only 700 ~ 3000mAh / g, can be said to achieve a substantial increase.The better than li-ion batteries(thinkpad t60 battery)

In addition, if the use of aqueous solution to replace the water-soluble gel can be in the air to 0.1A / g discharge rate of continuous discharge for 20 days, the discharge capacity of about 50000 mAh / g, compared with the original high-single digits. As the lithium metal battery capacity than lithium-ion battery had a high a number, so the value of a total of more than lithium-ion rechargeable batteries–thinkpad t400 battery,thinkpad t40 battery. high double-digit. High performance solution, but in ease of use even better on the gel. In the future need to consider which of these two, one for development.

This technology could also be considered with a simple to use rechargeable batteries(lenovo laptop battery) of different ways. If no battery charging, 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. It can be said is a new type of lithium-fueled fuel cell