Scientists from China’s leading Tsinghua University and the American Massachusetts Institute of Technology have worked long and hard to extend the life of lithium-ion batteries. However, negligence brought the desired result to the researchers. The batch of anodes accidentally remained under chemical treatment for several hours longer than expected. As a result, their strength has quadrupled … The degradation of the anode material is the main reason for shortening the battery life. Several hundreds of charge-discharge cycles noticeably affect the “survivability” of the battery. For the anodes of lithium-ion batteries, scientists decided to use aluminum instead of graphite, although it expands and contracts more. Because of this, the destruction of the material occurs faster. The researchers decided to stop the formation of an oxide coating on aluminum nanoparticles by soaking the materials in sulfuric acid and titanium oxide-sulfate. This replaced alumina with a more conductive titanium oxide. One of the scientists accidentally left the anodes in the chemical solution soaked for several hours longer than they should be. As a result, the party was ruined. Fortunately, the researchers did not think of throwing it away, but decided to check it out. It turned out that the new anodes have a shell of solid nanoparticles in which aluminum material is enclosed. It expands and contracts without damaging the outer coating. This design quadruples the number of charge-discharge cycles of batteries.