The theory guides the doping of rare earth elements in the bulk phase of LiNiCoMnO to reach the theoretical limit of energy density.

Rare earth elements, characterized by their high-energy d-shell and f-shell electrons, large charge density, and substantial atomic radius, theoretically offer enhanced electronic states near the Fermi level. Doping rare earth elements into electrode materials can improve the internal electronic conductivity of the material. However, there are relatively few studies and reports on the mechanisms of rare earth elements in optimizing LiNiCoMnO (NCM) materials.

A review on nickel-rich nickel-cobalt-manganese ternary cathode materials LiNiCoMnO for lithium-ion batteries: performance enhancement by modification.

The new energy era has put forward higher requirements for lithium-ion batteries, and the cathode material plays a major role in the determination of electrochemical performance. Due to the advantages of low cost, environmental friendliness, and reversible capacity, high-nickel ternary materials are considered to be one of ideal candidates for power batteries now and in the future. At present, the main design idea of ternary materials is to fully consider the structural stability and safety performance of batteries while maintaining high energy density.

Association between maternal psychological status and fetal hemodynamic circulation in late pregnancy.

Background: The prevalence reported of maternal depression from the first to the third trimester was 7.4%, 12.8%, 12.

[Study on separation of sulfonamides by capillary high-performance liquid chromatography and electrochromatography].

Aim: To establish separation methods of five sulfonamides by using capillary high performance liquid chromatography(mu-HPLC) and electrochromatography. The effect of mobile phase varies such as methanol content, pH, buffer solution concentration and voltage on their chromatographic behavior and electroosmesis flow was investigated. Capillary electrochromatography (CEC) was compared with mu-HPLC at the same condition.