Researchers at Deakin University in Australia say they have managed to use common industrial polymers to make solid electrolytes, which is expected to double the energy density of lithium-ion batteries, which will not explode when overheated Or catch fire.

Dr. Fangfang Chen and Dr. Xiaoen Wang from the Frontier Materials Institute at Deakin University claimed to have made new breakthroughs, calling this â€œthe first clear and useful example of liquid-free and efficient lithium ion transportation in the scientific community.

This new technology uses a solid polymer material that is weakly bound to lithium ions to replace the volatile liquid solvents commonly used as electrolytes in current battery cells. Dr. Fangfang Chen said in a press release: "If the industry adopts our technology, I can foresee such a future, for example, it is possible to safely install battery-related equipment in aircraft luggage, or electric vehicles will not be as good First aid personnel pose a fire hazard. "

The team believes that in addition to making the battery safer, the solid polymer electrolyte will eventually make the battery work with lithium metal anodes. This will be a major news in the battery world. Recently, the research team described the lithium anode in "Trends in Chemistry" as "the key to breaking the current energy density bottleneck of lithium ion chemistry"-this was previously considered to prevent electric vehicles, aircraft and portable The bottleneck in the development of electronic products at a due speed.

Dr. Wang Xiaoen said that this may be a way to double the energy density of lithium batteries. In the commercial environment, the peak energy density of lithium batteries currently reaches about 250 Wh / kg (for example, in the Tesla Model 3 battery pack ). Increasing it to 500 Wh / kg can extend the cruising range, or use a smaller, cheaper and lighter battery pack.

The Deakin University team stated that it only uses existing commercial polymers in new technologies, which means that industrial production should be able to proceed "easily." At present, the team has tested in button batteries, the size of which is equivalent to the size of watch batteries, but the team is now working on building a battery that can be used in mobile phones, and once installed and running, they will look for business partners to replace these solid-state batteries Bring to market.

A paper on this research has been published in the journal "Joule".

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