IBM air lithium battery lasts more than five times longer
[Technical Channel of Quanzhou Yisheng Machinery Co., Ltd.] Speaking of electric vehicles, although environmental protection and energy saving are good, they are also small and smart, but they will definitely be loved by everyone, but God opens a door for you and will You throw a window away-short cruising range, this short rib of electric vehicles that always makes car owners sigh when talking about it, in the final analysis, is caused by the low energy storage efficiency of on-board lithium batteries and the small energy storage capacity. After so many years of development, there is no authoritative organization in the industry to break this bottleneck, and IBM, which is committed to building a more intelligent global village, finally can't sit still-launching a new type of car air lithium battery. What is an air lithium battery? What are the similarities and differences between it and the commonly used lithium-ion batteries? What is the development prospect? This article will tell you about it!Experience the image reading mode
I currently want to Toyota Prius, Chevrolet Vo Lithium-ion batteries are used in mainstream electric car bodies such as Landa, Ford C-Max, etc. to provide electrical energy to the motor. In the pure electric mode, the full-charged state can cover an average of 160 kilometers of cruising range. Since the current number of charging stations has not reached the scale of gas stations, this cruising range is not enough for many people. On the contrary, if you insist on expanding the capacity on the basis of the current lithium battery technology, it will cause the car battery to be too large and heavy. It can be seen that the current lithium battery capacity and cost, volume and weight are a bunch of irreconcilable contradictions.
IBM air lithium battery is proposed to solve this problem. As early as 2009, IBM proposed the Battery 500 Project, which aims to develop an air lithium battery technology that allows the battery to maintain a battery life of at least 805 kilometers on a single charge while maintaining the volume and weight of the current on-board battery and cost control. The mileage, compared with the current cruising range of electric vehicles, has been increased by five times.
The structure of the IBM air lithium battery is shown in the figure. The anode is a lithium metal plate, the cathode is a surface carbon layer, and there are two layers of electrolyte in the middle, one of which is close to the lithium metal plate. The electrolyte on the side is responsible for receiving the lithium ions released by the lithium metal plate, and the electrolyte on the side close to the carbon layer is responsible for better permeating the received lithium ions into the carbon layer. There is a barrier film between the two electrolytes to prevent interpenetration and contamination between substances of different layers.
When charging the vehicle, oxygen reacts with lithium ions from the anode to generate lithium oxide and store current. When the battery is discharged, the lithium oxide compound is decomposed into lithium ions and oxygen. The lithium ions penetrate through the electrolyte and the electrolyte intermediate layer back to the anode lithium battery, and the oxygen is released back to the atmosphere. Both processes occur inside the cathode carbon layer.
According to the official introduction, the energy density produced by air lithium batteries (unit: Joule/kg; represents the amount of electricity stored per unit mass of battery) is 10 times that of ordinary lithium batteries (such as the one on Nissan Leaf). However, while obtaining such a high power load, its stability also has much room for improvement.
What is the development prospect of this technology? As an emerging technology, IBM officially stated that it has not planned for the mass production of this technology in recent years, because it is currently aimed at Some engineering hurdles of the technology have not been broken, but officials are very optimistic that the technology will be mass-produced from 2020 to 2030.
Summary: If IBM's technological innovation is successful, it will undoubtedly record a great contribution to the popularization of electric vehicles, five times the mileage increase, even with the current government Without funding the Ministry of Energy for power station expansion, my mother no longer has to worry about the car breaking down halfway. Of course, this is the United States. In addition to working on extended range wholeheartedly, IBM should not forget to ensure the life of the battery.
For more technical channel articles, please click the following link to view: