Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

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Still bothering you about charging your phone one day a day? Still for new energy vehicles dare not run high-speed and tangled? The CO2 batteries studied by Professor Xie Keyu of Northwestern University’s Nanoenergy Materials Research Center offer the possibility to solve these problems once and for all. Experimental data show that the team developed a battery seven times more powerful than conventional lithium batteries of the same mass, and the materials used are more environmentally friendly. The research has broad application prospects in all kinds of electronic products, transportation vehicles and even aviation and aerospace.

Still bothering you about charging your phone one day a day? Still for new energy vehicles dare not run high-speed and tangled? The CO2 batteries studied by Professor Xie Keyu of Northwestern University’s Nanoenergy Materials Research Center offer the possibility to solve these problems once and for all. Experimental data show that the team developed a battery seven times more powerful than conventional lithium batteries of the same mass, and the materials used are more environmentally friendly. This research has broad application prospects in all kinds of electronic products, transportation vehicles and even aviation and aerospace.

This battery is amazing.

With the rapid development of human society, energy depletion and global warming and other issues are becoming more and more serious, finding solutions to these problems has become the top priority of researchers. With the emergence of new energy technology, all kinds of energy storage and conversion devices gradually developed, in recent years, lithium-ion batteries have been playing an important role in the global social economy. However, the theoretical energy density of lithium-ion batteries is low and the battery life is short, and it is difficult to meet people’s needs. How to develop a new battery, in the battery life and other indicators have been greatly improved, has been the direction of Professor Xie Keyu’s team research.

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

In Professor Shekoyu’s lab, we saw a variety of new power supplies, including a round button battery that caught the reporter’s attention, not to mention its small head, which is the “lithium-carbon dioxide battery” that Professor Xie’s team has been studying. If you look closely, you will find that one side of the battery is not a closed structure, but is made up of many holes. According to Professor Xie, the biggest advantage of lithium-oxide batteries over lithium batteries, which are now widely used commercially, is that they have a higher energy density. Experimental data show that it is more than seven times the capacity of lithium batteries, assuming that the cell phone batteries we are using today can last three days, and that lithium-co2 batteries of the same weight may be used for 21 days or more in the future.

Another advantage is the use of carbon dioxide gas to provide electricity, can be described as “waste” treasure. At the same time, the entire energy conversion process, than the traditional lithium battery greener. In addition, in certain environments, such as the surface of Mars as high as 95% of carbon dioxide concentration, deep-sea and other extreme environmental co2 concentration is high, in such exploration projects, lithium-CO2 batteries can be “in-place” to better play its advantages.

Breakthroughs in core technology

Lithium-CO2 batteries have great potential for development and application value, as one of the metal gas battery family, the working principle is compared with traditional batteries are completely new.

How can this huge challenge be overcome? Professor Shekko’s team solved this problem from the catalytic reaction mechanism and the macro design of electrodes.

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

Since no such research has been done before, everything starts from scratch, and everything from basic experimental bodies, experimental conditions to testequipment needs to be built by the team itself. “We fumbled for a whole year to figure out the process, ” said Wang Hui, a member of the project team.

In one experiment, the team found that XPS peaks shifted, in order to find the reason, they discussed many times, in-depth analysis, research, and even “cross-border” reading solid physics books, consult a number of physics teachers, and finally found the answer in solid matter. The team designed a two-way catalyst for zinc sulfide-nitrogen doped graphene with strong interface electron interactions, introducing interface interactions into lithium-carbon dioxide batteries for the first time and revealing its mechanism of action. The electrochemical properties of lithium-CO2 batteries have been greatly improved.

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

Not satisfied with this, in terms of materials, Professor Shekko’s team worked with Professor Loh Kian Ping of the National University of Singapore to design a covalent organic framework with a stable structure. For the first time, it is introduced into the lithium-carbon dioxide battery as a gas battery diffusion layer, which effectively improves the efficiency of the battery charge and discharge cycle, and greatly alleviates the problems such as slow mass transfer in the process of battery charge and discharge. After using this material as a positive gas diffusion layer, the excellent electrochemical properties of lithium-CO2 batteries are among the best in similar research at home and abroad. The findings were published in Advanced Materials (2019, 2019, 31: 1905879.), Advanced Energy Materials 2019, 9, 1901806.

Disruptive Research: Small Battery Big Energy

According to the experimental data, the lithium-co2 batteries currently studied by Professor Shekko’s team are already capable of being used in certain environments, but are still a long way from actual mass production. For example, in the charging efficiency, battery charge and discharge times, cost control and so on need to further optimize the promotion. “We may have to do some protection around the lithium metal negativeto to improve the cycle efficiency of the battery.” Team member Zhou Lijiao said. In addition, the team will try to replace existing electrolytes with solid polymers in the future, providing more applications for lithium-carbon dioxide batteries.

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

Teachers and students of the Nanoenergy Materials Research Center

From lead-acid batteries to lithium-ion batteries, the rapid development of science and technology has brought profound changes to many industries. The key materials and mechanisms of lithium-CO2 batteries are different from tradition, and their disruptive technologies will certainly bring infinite possibilities for the future.

Human progress is closely related to energy development. Many years ago, ShekoYu, a student, accidentally read an article in which he mentioned that energy was at the forefront of the major social problems facing mankind. Since then, Mr. Shekko has made up his mind to use his knowledge to contribute to solving energy problems.

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries

At the Nanoenergy Materials Research Center of Northwestern University of Technology, there are also a group of teachers like ShekkoYu, who conduct cutting-edge research on the design, synthesis and its foundation and application in the field of new energy, and look forward to leading the international field of nano-new material preparation and its cross-application.

In recent years, the Nano-Energy Materials Research Center has made fruitful scientific research achievements in scientific research, has undertaken a number of national key research and development projects, GF strong-base projects and other projects, research has been published in Nature Reviews Materials, Nature Communications and other international top SCI journals; Relying on the team to establish a provincial-level key laboratory 1.

We should speed up the construction of an innovative country, strengthen basic applied research, expand the implementation of major national science and technology projects, highlight key common technologies, cutting-edge leading technologies, modern engineering technology, disruptive technological innovation… Perhaps one day in the future, carbon dioxide will no longer be called exhaust gas, lithium-CO2 batteries can really come into our lives. We use mobile phones with long life, drive more environmentally friendly cars, travel on Mars, in the abyss, everywhere with lithium-co2 batteries…

Western Industrial University develops a 7x increase in battery life to boost carbon dioxide batteries