According to reports, the first CSNS user scientific achievements article was published last year in Nano Energy, an authoritative journal in the field of nano-energy. The research has made important progress in the structural characteristics and formation mechanism of lithium ion battery cathode materials.
It is understood that as a new generation battery, lithium-ion batteries have the characteristics of light weight, high specific energy and long service life, and are widely used. Among all the cathode materials of lithium ion batteries, the ternary layered oxide materials containing transition metals nickel, manganese and cobalt are very promising. However, such materials generally have lithium nickel inversion structure defects that affect the material's charge and discharge performance. It is difficult to accurately determine such structural defects by experimental methods such as X-ray diffraction.
CSNS and Peking University Shenzhen Graduate School of New Materials cooperated to form a joint research team. The team used the diffractive effect of neutrons in the crystalline material to hit the beam on the crystalline powder sample, and carried out an accurate structural analysis of a lithium battery cathode material containing three transition metals of nickel, manganese, and cobalt A common structural defect in materials that affects charge and discharge performance. (Wen Cong)
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