Spontaneous explosion, short life, and low battery life... With the popularization of electric vehicles and smart phones, the defects of the battery increasingly plague people's daily lives. Nowadays, with the research results of Lu Bing'an, an associate professor of the School of Physics, the availability of aluminum-ion batteries, these problems are expected to be solved, and the battery industry will also undergo revolutionary changes. On April 6, London time, the world's top academic publication "Nature" published the paper "Fast Charge and Discharge Aluminum Ion Battery" by Lu Bing'an as the first author. This marks a zero breakthrough in our school's "Nature" paper.
Batteries, especially lithium-ion batteries, are frequently used in daily life. However, lithium batteries have a low capacity, a short life span, and are prone to spontaneous ignition or explosion under high temperature and collision conditions. High-capacity and safe rechargeable aluminum batteries have always been a substitute for existing batteries that the scientific community is dedicated to research. However, since aluminum cathode materials are easily corroded and cannot be discharged efficiently, they have been used for charging aluminum for the past 30 years. The battery is always in the conceptual stage.
Can be quickly charged, flexible, ionic liquid, secondary aluminum battery successfully developed
Prof. Lu Bing'an and others used graphite as the positive electrode material and used an ionic liquid equivalent to the salt solution as the electrolyte, thus solving the bottleneck problem of aluminum battery research. The experiment found that the use of three-dimensional graphite as a battery cathode material, due to the three-dimensional graphite excellent conductivity and a large surface area, can greatly reduce the battery charging time. In the past, it took 1 hour for a mobile phone using a lithium battery, such as an iPhone, to complete the charging in one minute on the aluminum battery. In the future, when the aluminum battery is charged for one hour, the use of the mobile phone for three or four days is no longer a hypothetical one. At the same time, aluminum batteries have a longer life. Experiments have shown that the capacity of the aluminum battery is almost not attenuated after 7500 cycles. The general lithium battery cycle life is generally 300 times.
Morphology and Characterization of Aluminum Battery Materials with Three-dimensional Graphite as Positive Electrode
In addition to the advantages of safety, long life, quick charge and slow discharge, compared with lithium batteries, aluminum battery production costs will be lower, as well as the environmental advantages of electrolytically produced ionic liquids such as non-toxic. In the future, aluminum batteries can be used not only in small household appliances such as mobile phones that are commonly used today, but also in place of current batteries in places where electric vehicles and the like are prone to violent collisions and high temperatures.
Lu Bingan demonstrates fast charging, flexible, ionic liquid, secondary aluminum battery
In the world's energy development trend from the development of new energy to energy reserves today, "Nature" magazine believes that the research results for the first time to achieve a rechargeable aluminum ion liquid battery, can be applied to a variety of modern electronic devices to improve human lifestyle. At present, this achievement has obtained a number of patent protections in the United States, and several well-known companies are committed to buying the patent.
It is understood that "Nature" magazine is one of the most influential academic journals in the world. His published papers represent substantial progress on an important scientific issue, with important implications for the immediate and long-term future.
Lu Bing'an was born in 1985. After graduating from Ph.D. in 2012, he worked at the school. He is now an associate professor at the School of Physics and Microelectronics of Hunan University. In May 2014, under the auspices of the China Scholarship Council, as a visiting scholar, he went to the US Department of Chemistry, Stanford University Dai Hongjie task group for a one-year exchange visit.
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