MIT analyzes the cause of battery drop -Lithium - Ion Battery Equipment

MIT analyzes the cause of battery drop -Lithium - Ion Battery Equipment

In the past 30 years, the cost of rechargeable lithium-ion batteries for mobile phones, laptops and automobiles has dropped significantly and become the main driving force for the rapid growth of these technologies. However, attempts to quantify the results of cost reduction are ambiguous and contradictory, which hinders attempts to predict the future of the technology or design useful policies and research priorities.

Now, researchers at MIT have carried out a detailed analysis of the research on the price decline of these batteries, which are the leading rechargeable technologies in the world today. The new research reviewed more than 30 years of history, including analyzing the original basic data sets and documents as much as possible to obtain the development track of the technology.

The researchers found that the cost of these batteries has dropped by 97% since they were first commercially available in 1991. This improvement speed is much faster than what many analysts claim, which is comparable to the improvement speed of solar photovoltaic panels. Some people once thought that solar photovoltaic panels were a special case. The new research results today reported a paper by MIT postdoctoral Micah Ziegler and associate professor Jessika Trancik in the journal Energy and Environmental Science.(Lithium - Ion Battery Equipment)

Trancik said that although it was obvious that the cost of some clean energy technologies (such as solar energy and wind energy) had declined significantly, when they began to study the price decline of lithium-ion batteries, they saw that there were great differences on the rate of cost decline of these technologies. Similar disagreements also arise in other important aspects of tracing the development of batteries, such as increasing energy density (energy stored in a given volume) and specific energy (energy stored in a given mass).

These trends are so influential in getting us to where we are now and in thinking about what may happen in the future. Trancik, an associate professor at the MIT Institute for Data, Systems and Society. Although we all know that the decrease of battery cost is the booster of the recent sales growth of electric vehicles, it is not clear how large the decline is. She said: Through this detailed analysis, we can confirm that the lithium-ion battery technology has improved in terms of cost, and its improvement speed is comparable to that of solar technology, especially photovoltaic modules, which are generally regarded as a gold standard for clean energy innovation.

It seems strange that there are so many uncertainties and disagreements about how much the cost of lithium-ion batteries has decreased and what factors are causing it. But in fact, many information exists in the form of data closely held by enterprises, which is difficult for researchers to obtain. Most lithium-ion batteries are not sold directly to consumers -- you can't go to a typical corner pharmacy to buy replacement batteries for your iPhone, your PC, or your electric car. Instead, manufacturers buy lithium-ion batteries and use them in electronics and cars. Big companies like Apple or Tesla buy batteries at millions of prices, or produce them themselves. The price is negotiated or calculated internally, but has never been disclosed publicly.

In addition to helping promote the ongoing electrification of transportation, the further reduction of the cost of lithium-ion batteries may also increase the use of batteries in fixed applications to make up for the intermittent supply of clean energy such as solar energy and wind energy. Both of these applications can play an important role in helping curb greenhouse gas emissions from climate change in the world. I can't overstate the importance of these trends in clean energy innovation for us to get to where we are now. Here, we begin to see the rapid electrification of vehicles and the rapid growth of renewable energy technologies. Of course, there is still much to do to deal with climate change, but this is really a game changer. Trancik said.

Ziegler pointed out that the new discovery is not only to trace the history of battery development, but also to help guide the future. After reviewing all the published literature on the cost reduction of lithium ion batteries, he found that the measurement criteria for historical improvement were very different. And in various papers, researchers are using these trends to put forward suggestions on how to further reduce the cost of lithium ion technology, or when the cost target can be reached. However, due to the large difference of basic data, the suggestions put forward by researchers may be quite different. Some studies have shown that for some applications, the cost of lithium ion batteries will not decline rapidly, while other studies are much more optimistic. 



Contact Us

24 hours online service