Abstract: A negative electrode active material includes graphite and amorphous carbon, where according to Raman testing, the negative electrode active material satisfies: 1.6?WD/WG?2.6, where WD is a peak width at half height of peak D within 1340 cm?1 to 1370 cm?1 in the Raman spectrum, 40 cm?1?WD?100 cm?1, and WG is a peak width at half height of peak G within 1570 cm?1 to 1590 cm?1, 15 cm?1?WG?50 cm?1. The negative electrode active material undergoes surface treatment, where the surface thereof has a higher surface lattice defect degree, effectively improving a gram capacity and kinetics performance thereof, thereby making the electrochemical apparatus including the negative electrode active material have both high energy density and good electrochemical performance.

Abstract: A flexible display screen includes: a flexible substrate (1); an OLED device layer (2) formed on the flexible substrate (1); an encapsulation layer(3), disposed on the OLED device layer(2) and encapsulating the OLED device layer (2); and an encapsulation protection layer (4) formed on the encapsulation layer (3). The embodiments of the present disclosure also provide a flexible display device and a manufacturing method of the flexible display screen.

Abstract: A multifunctional hub according to the present invention includes a box body, and the box body is provided with a sliding cavity with an upward opening therein, and an annular slider is slidably slid in the sliding cavity. The multifunctional hub of the present invention has simple and clear operation, sensitive response, saving time and labor; at the same time, the device of the present invention is rich in functions, fixed and reliable, and highly practical.

Abstract: A multifunctional hub according to the present invention includes a box body, and the box body is provided with a sliding cavity with an upward opening therein, and an annular slider is slidably slid in the sliding cavity. The multifunctional hub of the present invention has simple and clear operation, sensitive response, saving time and labor; at the same time, the device of the present invention is rich in functions, fixed and reliable, and highly practical.

Abstract: The invention discloses a slab nozzle inspection equipment with artificial measurement error avoidance, and includes a base, a left-right symmetrical bracket is fixed on the upper side of the base, and an adjustment cavity is arranged in the base. The end surface of the bracket is provided with two sets of four parking spaces, and the present invention adopts a lead screw active pulley and a wire. The belt connection between the auxiliary pulleys of the levers realizes the synchronization of the rotation of the left and right lead screws and ensures the stability of the car when it moves up and down. The hydraulic power is provided to switch the power of the left and right parking spaces to ensure that the left and right parking spaces work independently, Using a one-way bearing structure, the power is switched by whether to rotate synchronously to ensure that each parking space works independently.

Abstract: A process for preparing a catalyst comprising palladium supported on a carrier via a layered precursor, comprising the following steps: (1) synthesis of hydrotalcite layered precursor which comprises promoting metal element and aluminium on the surface of the carrier of A12O3 microspheres, the atoms of the promoting metal and aluminium being highly dispersed by each other and bonded firmly to the carrier due to the crystal lattice positioning effect of the hydrotalcite crystal; (2) introduction of palladium into the carrier through impregnation; (3) drying; and (4) calcination and reduction with H2, the hydrotalcite layered precursor being converted into a composite oxide which consists of oxides of the promoting metal and aluminium, and the promoting metal element and aluminium being highly dispersed by each other and being able to separate and disperse the mainly active palladium element loaded later.

Abstract: A process for preparing a catalyst comprising palladium supported on a carrier via a layered precursor, comprising the following steps: (1) synthesis of hydrotalcite layered precursor which comprises promoting metal element and aluminium on the surface of the carrier of Al2O3 microspheres, the atoms of the promoting metal and aluminium being highly dispersed by each other and bonded firmly to the carrier due to the crystal lattice positioning effect of the hydrotalcite crystal; (2) introduction of palladium into the carrier through impregnation; (3) drying; and (4) calcination and reduction with H2, the hydrotalcite layered precursor being converted into a composite oxide which consists of oxides of the promoting metal and aluminium, and the promoting metal element and aluminium being highly dispersed by each other and being able to separate and disperse the mainly active palladium element loaded later.