Headed by Prof. Yan Lu from the Institute of Soft Matter and Functional Materials at the Helmholtz-Zentrum Berlin (HZB), a team of scientists created a cathode material for the use in lithium-sulphur batteries, which is characterized by a high storage capacity and a long lifespan.
The nanomaterial made from nanoparticles of a titanium oxide compound (Ti4O7) will be capable to improve cathode performance due to its highly porous structure. With their innovation, the scientists hope to offer an alternative to lithium-ion batteries and their high-priced and toxic cathode materials. Sulphur is known to be more harmless to the environment and easier to access than the heavy metals normally used in the production of lithium-ion batteries, but its quickly decreasing storage capacity has been a drawback in comparison of these two other battery technologies.
The HZB scientists used nanoparticles that consist of Ti4O7 molecules in order to confine the sulphur. These nanoparticles possess stronger binding abilities than the conventional titanium dioxide particles. Project leader Prof. Yan Lu announces: “We have been working to improve the repeatability of this synthesis for over a year. Now we know how to do it. Next, we will work on fabricating the material as a thin-film”. This will make the new technology useable for commercial production.
Source: Helmholtz-Zentrum Berlin
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