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Whether photovoltaic or nuclear, human civilization must turn to renewable energy sooner or later. Considering the ever-increasing energy demands of mankind and the limited nature of fossil fuels, this trend in renewable energy is considered inevitable.
Therefore, in order to develop alternative energy sources, scientists have conducted a lot of research, most of which are using electricity as the main energy carrier.
With the extensive development of renewable energy, new products and equipment based on renewable energy have also been developed rapidly. The most notable change is the rapid spread of electric vehicles.
While 10 years ago, electric vehicles were barely visible on the road, now millions of electric vehicles enter every household every year.
The electric vehicle market has become one of the fastest-growing new energy industries, and Musk has become one of the richest people in the world.
Unlike conventional cars, which derive their energy from the combustion of hydrocarbon fuels, electric vehicles rely on batteries as their energy storage medium. However, batteries have long had a much lower energy density than hydrocarbons, resulting in very low ranges for early electric vehicles.
Despite huge improvements in battery technology, electric vehicles still face an embarrassing problem: The batteries charge too slowly.
Currently, it takes about 10 hours for an electric car to fully charge at home at a charging point, and even at a dedicated fast-charging station it takes 20 to 40 minutes to fully charge the vehicle. This brings extra time cost and bad experience to consumers, and makes some potential consumers stop looking for trams.
Is there any new technology that can shorten the charging time?
To solve this problem, scientists searched for answers in the mysterious realm of quantum physics. They continued to explore, and finally found that quantum technology can achieve faster charging of batteries.
The concept of such a "quantum battery" was first proposed by scientists Alicki and Fannes in a seminal paper published in 2012. In theory, it is possible to speed up the battery charging process by charging all the batteries at the same time in a collective manner.
This is especially exciting. Such collective charging is not possible in conventional batteries, where the cells are charged in parallel and independently of each other.
The advantage of this collective charging versus parallel charging can be measured by a ratio called the " quantum charging advantage ."
Later, around 2017, it was noted that there may be two sources behind this quantum advantage, namely "global operation" (all cells talking to all other cells at the same time, i.e. "all people sitting at one table" ) and "fully coupled" (each cell can talk to every other cell, i.e. "many discussions, but only two participants per discussion").
However, it is unclear whether these two sources are necessary and whether there are any limitations to the charging speeds that can be achieved.
Recently, scientists from the Center for Theoretical Physics of Complex Systems (IBS) of the Korea Institute for Basic Science (IBS) have given a new technical solution through further exploration - quantum charging technology. Research has shown that full coupling is inappropriate in quantum batteries, and the existence of global operations is an advantage in the quantum field.
The team further pinpointed the exact source of this advantage, while ruling out other possibilities, and even provided a clear way to engineer such a battery. Using quantum charging technology, the traditional electric vehicle charging process can be accelerated by a factor of 200, which means that the charging time will be reduced from 10 hours to about 3 minutes (at home), or from 30 minutes to 9 seconds at a charging station.
Source: The current electric car of IBS in South Korea, compared with the future car based on quantum battery technology
The implications of this technical solution could be far-reaching, the researchers say, and the realization of quantum charging could extend well beyond electric vehicles and consumer electronics. For example, it may find critical use in future nuclear power plants, where large amounts of energy are required to charge and discharge instantaneously.
Of course, quantum technology is still in its infancy, and there is still a long way to go to implement these methods in practice.
However, findings such as these open up a promising direction and could motivate funding agencies and businesses to further invest in these technologies. If realized, it is believed that quantum batteries will revolutionize the way we use energy and bring us closer to a sustainable future.
Original address: https://www.eurekalert.org/news-releases/946882
From: eurekalert, academic headlines, etc.
Copyright statement: This article comes from the Internet, and the copyright belongs to the original author. Copyright issues, please contact to delete.
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