In order to achieve the decarbonization goals of the Paris Agreement, countries are ambitious to join the ranks of electric vehicle popularization, but with the soaring price of lithium, the price of electric vehicles is rising.
This has caused difficulties for the popularization of electric vehicles, especially in some backward developing countries, and the popularization of electric vehicles can be said to be difficult to achieve. But the era of electrification has begun, and there is no better option.
As a result, some countries are looking to another, more affordable electric car. In India, for example, since the Signing of the Paris Agreement in 2015, the Indian government announced a shocking decision in 2017: by 2030, India's electric vehicle penetration rate will reach 100%.
Four years on, India's electric vehicle industry is struggling, and polls show that the percentage of people willing to buy or able to afford to buy an electric car is very low! According to a recent bloomberg report, India intends to popularize electric tricycles to achieve decarbonization plans.
Not only India, but even some developed countries have also begun to promote cheaper electric bicycles or electric motorcycles (hereinafter referred to as electric vehicles), which are commonly known in our country, commonly known as battery cars.
There should be no one who does not know electric vehicles, and commuting in the city is very convenient, especially for food delivery. The power battery of electric vehicles generally contains lithium batteries and lead-acid batteries, the former has a high energy density and a high price, and the latter has a low energy density and a cheap price.
The battery of the electric vehicle has a feature, that is, the battery is not durable, under normal circumstances, after 1 to 3 years of use, you have to consider replacing the battery (this is written according to the information of the query, there may be discrepancies, welcome to correct), especially for electric vehicles with high frequency of use, the short battery life is a headache problem.
MAHLE Powertrain and Allotrope Energy recently unveiled a new battery technology designed primarily for electric vehicle batteries that provide ultra-fast charging and good power density.
Ultra-fast charging can be charged at 20 kW in 90 seconds, and most importantly, this battery has a cycle life of up to 100,000 times!
How did they do it?
This unique battery is called a lithium-carbon battery, a supercapacitor and a lithium-ion hybrid, and it combines the advantages of a supercapacitor and a traditional lithium-ion battery.
Anyone who knows it knows that the supercapacitor is charged fast enough to be calculated in seconds, and its cycle life can be as high as a million times, but its most fatal weakness is that the energy density is particularly low (about 10Wh/kg), which is also the most fundamental reason why it cannot provide a source of power to the vehicle.
However, both academia and industry believe that it has great potential as a source of vehicle power, so it is trying to increase its energy density.
Now, it is more common for many startups to use it in combination with lithium-ion batteries, taking advantage of its rapid charging and discharging, recovering the energy of regenerative braking, thereby optimizing the performance and life of lithium-ion batteries.
For example, the famous supercapacitor research and development company Nawa Technologies made a supercapacitor material into a body panel, combined with a lithium-ion battery, reducing the weight of the vehicle and improving the range of the electric vehicle.
The recently launched lithium-carbon battery is not combined with a lithium-ion battery, but directly uses a supercapacitor as the positive electrode of the battery, which is composed of a battery-type negative electrode, separated by an organic electrolyte.
The energy density of this battery will not be very high, about 60 Wh/kg, which is roughly equivalent to the energy density of lead-acid batteries, so the positioning is used for electric vehicles, mainly using its advantages of up to 100,000 cycle life to replace the current short-lived electric vehicle batteries.
This battery is stable and is not affected by the thermal degradation effects experienced by traditional lithium batteries, and can be transferred and charged quickly even at high temperatures, eliminating the need for external cooling or complex battery management systems.
This battery is used in the city's electric vehicle fast food delivery service, which can travel 25 kilometers on a super fast charge.
Electric vehicles have been popular in our country for many years, and recently there have been news in many developed countries to help achieve decarbonization programs.
This article is the original of science and technology cool probe, plagiarism must be investigated!
The author is a doctor of the Chinese Academy of Sciences, a researcher of the American Fujian University, science and technology control, contact with front-line scientific and technological research and development, willing to share, welcome to pay attention to science and technology cool detective.