Abstract: Embodiments of the present disclosure provide a display panel and a display terminal. The display panel includes at least one ultraviolet sensing transistor and at least one control transistor disposed on a substrate, and a color film substrate including a light blocking unit; wherein the ultraviolet sensing transistor includes an ultraviolet absorbing layer, and an orthographic projection of the light blocking unit on the substrate covers an orthographic projection of the ultraviolet absorbing layer on the substrate. According to the embodiment of the present disclosure, the light blocking unit absorbs or blocks the visible lights to prevent the visible lights from entering into the ultraviolet absorbing layer.

Abstract: Disclosed are a fuel cell polar plate structure and a fuel cell stack, including a battery block comprising a bipolar plate, carbon papers, water-holding sheets and a proton exchange membrane; said bipolar plate has a reaction bath opened on the outer surface of each polar plate body; the front and rear sides of the reaction bath are provided with water crossing ports formed with grooves extending into the reaction bath; the fuel cell stack comprising a plurality of battery blocks, current collectors, insulating plates and end plates, wherein said battery blocks being stacked end to end to form a battery pack, and pressure-adjustable fixing mechanisms are fixed to the outer surfaces of the end plates. The independent anti-dry design improves the power generation effect and the fixing pressure regulating structure facilities controlling of the pressure between the polar plates and slows down the aging of the sealing ring.

Abstract: A method for producing a membrane electrode comprises a thermal transfer printing step, a thermal combining step, a carbon paper attaching step and a hot-pressing step. The invention realizes the continuous automatic production of the membrane electrode and improves the production efficiency and the quality of the membrane electrode.

Abstract: A method for preparing a modified polypropylene film, the modified polypropylene film comprising a polypropylene film; and, an oxide layer and/or nitride layer, each of which has a thickness of 20-500 nm, on a surface of the polypropylene film; the method comprising: depositing the oxide layer or nitride layer on a surface of the polypropylene film by an Atomic Layer Deposition (ALD) process to obtain the modified polypropylene film; wherein the step of depositing the oxide layer or nitride layer comprises: placing the polypropylene film in an ALD reaction chamber; vacuumizing; heating up; introducing a carrier gas; and, passing at least two precursors into the reaction chamber alternately for reaction, resulting in the modified polypropylene film; wherein the precursors comprise a precursor for providing a metal element or Si, and a precursor for providing an oxygen or nitrogen element.

Abstract: The present disclosure relates to an electrode for supercapacitor, preparation method and use thereof. The electrode has an electrode terminal, an active layer and a coating layer from inside to outside. A material for preparing the coating layer includes an oxygenated compound, which contains at least one of transition metal elements or is doped with a substance containing a transition metal element. The coating layer on the surface of the active layer prevents organic electrolytes from being easily adsorbed and nucleated in the porous structure of the electrode surface due to interface defects, and facilitates to weaken the interface problems existing between the electrolyte and the electrode surface. The capacitor can significantly increase the operating voltage window (may be up to above 4V) and capacitance of the supercapacitor, and further increase energy density thereof.

Abstract: The disclosure belongs to the field of film materials, and discloses a high-temperature resistant modified polypropylene film, and a preparation method and use thereof. The modified polypropylene film includes a polypropylene film, and an oxide layer and/or nitride layer, each of which has a thickness of 20-500 nm, on the surface of the polypropylene film. It can significantly improve the thermal stability and high-temperature withstand voltage property of the polypropylene film by depositing the oxide layer or nitride layer of appropriate thickness on the surface of the polypropylene film by an ALD technology. The modified polypropylene film has high-temperature resistance, such as resistance to at high temperature of 150° C., and very small deformation quantity at high temperature, and can withstand a high breakdown voltage at high temperature. For example, the modified polypropylene film can withstand a voltage of 580 kV/mm at 140° C.

Abstract: The present disclosure relates to an electrode for supercapacitor, preparation method and use thereof. The electrode comprises an electrode terminal, an active layer and a coating layer from inside to outside. A material for preparing the coating layer comprises an oxygenated compound, which contains at least one of transition metal elements or is doped with a substance containing a transition metal element. Providing the coating layer on the surface of the active layer prevents organic electrolytes from being easily adsorbed and nucleated in the porous structure of the electrode surface due to interface defects, and facilitates to weaken the interface problems existing between the electrolyte and the electrode surface. The capacitor prepared by means of the electrode according to the embodiments of the present disclosure can significantly increase the operating voltage window (may be up to above 4V) and capacitance of the supercapacitor, and further increase energy density thereof.

Abstract: A hybrid power drive system is provided, including a power battery device, a range extender system, and a motor drive system. The power battery device is configured to supply power to the motor drive system. The range extender system includes an engine and a generator. The generator is able to generate power under the driving of the engine to supply the power to the motor drive system and/or charge the power battery device. The hybrid power drive system further includes a vehicle control unit configured to control the engine and/or generator of the range extender system to generate a driving force. The range extender system is mechanically connected to a main coupling mechanism to transmit the generated driving force to a main drive axle of a vehicle by means of the main coupling mechanism to drive wheels on both sides of the axle to rotate. Also provided is a vehicle having the hybrid power drive system.