Abstract: The present disclosure relates to the technical field of preparation of a lithium-ion cathode material, and discloses a lithium manganese iron phosphate cathode material and a preparation method thereof, a manganese iron phosphate precursor and a preparation method thereof, and a lithium-ion battery. The cathode material has a composition represented by Formula I: LidMn1-a-b-cFeaRbPO4/C, Formula I, where 0.1?a?0.5, 0?b?0.08, 0.9?d?1.2, and R is selected from at least one of Al, Mg, Ca, Sr, V, Cr, Y, Mo, Nb, B, Al, W, La, Sm, Co, Ni, Cu, Zn, Zr, and Ti. The cathode material has a volume resistivity ranging from 10 ?·cm to 104 ?·cm. The cathode material includes specific doping elements and has a low volume resistivity. When the cathode material is used to prepare the lithium-ion battery, electrochemical performance of the lithium-ion battery can be effectively improved.

Abstract: A semiconductor device may include a channel layer including a two-dimensional material layer and a molecular crystal layer on the two-dimensional material layer, the two-dimensional material layer including a two-dimensional semiconductor material; a source electrode and a drain electrode, which respectively may be on both sides of the channel layer; and a gate insulating layer and a gate electrode, which respectively may be on the channel layer between the source electrode and the drain electrode. The molecular crystal layer may include a plate-shaped aromatic compound of C20-C40, and may have a thickness of 1 molecular layer to 5 molecular layers.

Abstract: The present application discloses a liquid crystal display panel, a driving method thereof, and a display device. The liquid crystal display panel includes a pixel structure, which includes a plurality of sub-pixels arranged in a matrix; data lines and scan lines arranged perpendicularly cross each other, wherein each of the sub-pixel groups includes two of the sub-pixels of same color; a first driving unit electrically connected to the scan lines, wherein the first driving unit inputs scan signals to the scan lines in a preset sequence, the sub-pixel groups of the pixel modules sequentially obtain the scan signals, two of the sub-pixels in each of the sub-pixel groups obtain the scan signals at a same time, and two of the sub-pixels in a same one of the sub-pixel groups obtain the scan signals at a same time.

Abstract: An iron manganese phosphate precursor, a lithium iron manganese phosphate positive electrode material and a method for preparation thereof, an electrode material, an electrode, and a lithium-ion battery are disclosed. The lithium iron manganese phosphate precursor is represented by (NH4)Mn1-x-yFexMyPO4H2O/C, wherein 0.1<x?0.6 and 0?y?0.04, and M is selected from at least one of Mg, Co, Ni, Cu, Zn, and Ti. Lithium iron manganese phosphate positive electrode material prepared from the precursor is uniform in carbon coating, has a dense secondary spherical morphology, is high in compaction density, can improve the electrochemical performance of the lithium-ion battery when applied to the lithium-ion battery, is high in specific capacity and good in cycle performance.

Abstract: Provided are a semiconductor device including a two-dimensional material and a method of manufacturing the semiconductor device. The semiconductor device may include a substrate, first and second two-dimensional material layers on the substrate and junctioned to each other in a lateral direction to form a coherent interface, a first source electrode and a first drain electrode on the first two-dimensional material layer, a first gate electrode between the first source electrode and the first drain electrode, a second source electrode and a second drain electrode on the second two-dimensional material layer, and a second gate electrode between the second source electrode and the second drain electrode.

Abstract: The present application discloses a liquid crystal display panel, a driving method thereof, and a display device. The liquid crystal display panel includes a pixel structure, which includes a plurality of sub-pixels arranged in a matrix; data lines and scan lines arranged perpendicularly cross each other, wherein each of the sub-pixel groups includes two of the sub-pixels of same color; a first driving unit electrically connected to the scan lines, wherein the first driving unit inputs scan signals to the scan lines in a preset sequence, the sub-pixel groups of the pixel modules sequentially obtain the scan signals, two of the sub-pixels in each of the sub-pixel groups obtain the scan signals at a same time, and two of the sub-pixels in a same one of the sub-pixel groups obtain the scan signals at a same time.

Abstract: An iron manganese phosphate precursor, a lithium iron manganese phosphate positive electrode material and a method for preparation thereof, an electrode material, an electrode, and a lithium-ion battery are disclosed. The lithium iron manganese phosphate precursor is represented by (NH4)Mn1-x-yFexMyPO4H2O/C, wherein 0.1<x?0.6 and 0?y?0.04, and M is selected from at least one of Mg, Co, Ni, Cu, Zn, and Ti. Lithium iron manganese phosphate positive electrode material prepared from the precursor is uniform in carbon coating, has a dense secondary spherical morphology, is high in compaction density, can improve the electrochemical performance of the lithium-ion battery when applied to the lithium-ion battery, is high in specific capacity and good in cycle performance.