With the increasing global awareness of renewable energy and environmental protection, the field of new energy technology is developing rapidly. As an innovator in this field, Zhiliang Xincai was invited to participate in the 2024 Shanghai International New Energy Lithium Battery Exhibition (BTF2024) to participate in the grand event with global counterparts to jointly explore the future development of new energy technology. BTF2024 Shanghai International New Energy Lithium Battery Exhibition provides an excellent opportunity for Zhiliang New Materials to show its strength and exchange and cooperation. It is believed that during the exhibition, Zhiliang New Materials will fully demonstrate its innovative strength in the field of new energy science and technology, and work hand in hand with global counterparts to jointly promote the prosperity and development of the new energy industry. And here I wish BTF2024 Shanghai International New Energy Lithium Battery Exhibition a full success.

There are mainly four kinds of olivine phosphate LiMPO4 (M represents metal, mainly iron Fe, nickel Ni, manganese Mn and cobalt Co); The voltages are 3.4~3.5V (iron), 5.0~5.4V (nickel), 4.0~4.2V (manganese) and 4.7~4.8V (cobalt) respectively. At the same time, the four phosphates can be doped with each other to form multiple olivine series materials. The charge-discharge curves and cyclic voltammetry curves of the multi-element system can be simply regarded as the linear superposition of the charge-discharge curves and cyclic voltammetry curves of the four separate olivines. Since the voltage of lithium nickel phosphate exceeds the current upper limit of electrolyte stability, cobalt is not the main constituent element. On the contrary, manganese is friendly to the environment, and the working voltage of lithium manganese phosphate is ideal (at 4.1V), which can be matched with the existing commercial electrolytic solution.

Among the high voltage 5V cathode materials with spinel structure, lithium nickel manganate (LiNi1-xMnxO4) has good stability. The actual discharge capacity of LiNi0.5Mn1.5O4 is about 140mA h/g, which is close to the theoretical capacity. The charge and discharge platform is about 4.7V. At the same time, LiNi0.5Mn1.5O4 is simple to synthesize and is one of the mainstream directions of cathode development.