Jun 19, 2019 Pageview:828
Lithium air battery is a very promising high-specific capacity battery technology. Using the reversible reaction of lithium metal and oxygen, the theoretical energy density limit reaches 11,000 Wh/kg, far exceeding the current actual energy density of 200 + Wh/kg of lithium batteries., Therefore, it has been hailed by academia and industry and is widely regarded as a future subversive technology in the battery field.
However, lithium-ion battery research has always been a lot of doubts in the industry. Many people think that the definition of lithium-ion battery is unknown (should be called lithium oxygen), the reaction mechanism is complex, the polarization is low, and the cycle life is not good. It is not the reliable development direction of the battery industry in the future (power battery demand is the driving force of important industries). Of course, in the process, researchers continue to work hard and produce a lot of results, and the discussion on the future of this direction is also deepening.
Recently, American scientists and others reached a breakthrough in the research of lithium air batteries. In the "NATURE" article, they successfully made batteries that can circulate more than 700 times in Air-like atmosphere. It has solved the problem that many systems can only react with pure oxygen and have a poor cycle life(often only a few dozen times), and has made significant progress in scientific research in this field.
Lithium air battery technology has always been a hot technology that people pay attention to. Its high theoretical energy density has been widely expected, but the problems and challenges of this technology have always been very many. Recent research shows that there is great hope of solving an important technological bottleneck. However, if industrial practicality is the desired goal, it still has a long way to go. It also requires the joint efforts of the scientific research industry and industry.
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