Abstract: A transaction harmony degree-based method and system for transaction matching between a power grid and building energy. The method includes: obtaining a transaction harmony degree of a historical transaction cycle; sending, by using a blockchain, the transaction harmony degree to a corresponding building energy user, and sending a maximum compensated electricity price and an expected compensated electricity price in peak-valley regulation to all building energy users; determining, by each building energy user, a transaction-based compensated electricity price in the peak-valley regulation based on the received transaction harmony degree and the received maximum compensated electricity price and expected compensated electricity price in the peak-valley regulation, and feeding back the transaction-based compensated electricity price in the peak-valley regulation to a power grid; and determining, by the power grid, a building energy user that successfully performs transaction matching with the power grid.

Abstract: The invention provides a lithium-ion battery electrode piece and a lithium-ion battery including the same. The electrode piece includes an electrode active material layer disposed on the surface of the current collector and a protective layer disposed on the surface of the electrode active material layer. The protective layer is composed of metal oxide layers and conductive layers alternately stacked in the horizontal direction. The area ratio of the metal oxide layers to the conductive layers is 4:1-1:4, and the thickness ratio is 0.5:1-1:1. According to the invention, by regulating the shape and ratio of the high temperature stability material and the conductive active material on the electrode piece in the process of coating the protective layer, the amount of the two coating materials is precisely controlled to implement the precise regulation of the high temperature stability and rate performance of the electrode piece.

Abstract: Disclosed are a special fertilizer for intercropping maize and peanuts and a cultivation method for maintaining soil organic carbon (SOC) balance, belonging to the technical field of SOC balance. The special fertilizer for intercropping maize and peanuts includes the following raw materials: coated urea, heavy superphosphate, ammonium sulfate, fermented soybean meal, bentonite, sodium molybdate, borax, humic acid, ammonium dihydrogen phosphate, plant ash and zinc sulfate heptahydrate. The cultivation method includes the steps of land selection, land preparation, fertilizing, sowing, field management, and rotation.

Abstract: A laser powder bed fusion additive manufacturing method including performing laser melting of layers of a powder bed of steel powder in a protective atmosphere including nitrogen, wherein a temperature of the powder bed is below 220° C. A composition of the steel powder may include, by weight: 3% to 7% Cr, 2-5% Mo, 0.2% to 0.7% V, max 0.7% Si, max 1% Mn, max 1.5% C, and a balance of Fe.

Abstract: An additive manufacturing method wherein an object is formed by selectively solidifying layers of powder with at least one energy beam. The method includes forming the object from a nickel-based superalloy, wherein exposure parameters and an exposure pattern for the at least one energy beam result in the object having a directionally solidified microstructure with columnar grains aligned with a build direction, perpendicular to the layers. A composition of the nickel-based alloy by weight % may include: 9.3-9.7W, 9.0-9.5Co, 7.5-8.5Cr, 5.4-5.7Al, 3.1-3.3Ta, 1.4-1.6Hf, 0.6-0.9Ti, Mo 0.4-0.6, 007-0.015Zr, 0.01-0.02B with a carbon concentration of around 0.07-0.09 wt % and a balance of Ni.

Abstract: A resin bath device for wet winding provided herein includes a resin stirring bath and a resin impregnation bath, where a bottom of a side wall of the resin stirring bath is connected to the resin impregnation bath, two ingredient baths are provided at two ends of the resin stirring bath, and a stirring mechanism is arranged inside the resin stirring bath. A resin dipping roller is mounted at a middle of the resin impregnation bath where a pressure roller is mounted at tops of side walls; an electric heating coil is arranged inside a bottom wall of the resin impregnation bath, and an electric heating rod is arranged at an axis of the pressure roller; and wire guide rollers are mounted at two ends of the side wall of the resin impregnation bath.

Abstract: A resin bath device for wet winding provided herein includes a resin stirring bath and a resin impregnation bath, where a bottom of a side wall of the resin stirring bath is connected to the resin impregnation bath, two ingredient baths are provided at two ends of the resin stirring bath, and a stirring mechanism is arranged inside the resin stirring bath. A resin dipping roller is mounted at a middle of the resin impregnation bath where a pressure roller is mounted at tops of side walls; an electric heating coil is arranged inside a bottom wall of the resin impregnation bath, and an electric heating rod is arranged at an axis of the pressure roller; and wire guide rollers are mounted at two ends of the side wall of the resin impregnation bath.

Abstract: A powder bed fusion additive manufacturing method includes forming layers of powder of a powder bed and exposing the layers to one or more energy beams to melt the powder to form an object. The exposure of each layer to the or each energy beam forms melt pools in a conduction or transition mode with an exposure distance between adjacent exposures within the layer being 40% to 60% of a width of the melt pools generated by the exposures and an offset of exposures between successively melted layers in a direction in which the exposure distance is measured being 40% to 60% of the exposure distance.

Abstract: An alkaline storage battery which is excellent in charge and discharge cycle life characteristics and high-rate discharge characteristics is provided by constructing it using an electrode made of an MmNi type hydrogen-absorbing alloy powders having modified surface. The alkaline storage battery comprises a negative electrode made using a hydrogen-absorbing alloy in the form of powders comprising at least one rare earth element, nickel and at least one transition metal in which the surface portion of the alloy has nickel in metallic state exposed at the surface, pores positioned between the nickel and the nickel, and a nickel-rich layer present on the alloy surface contacting with the pores, a positive electrode made using a metal oxide, a separator, and an alkaline electrolyte.

Abstract: The present invention provides an alkaline storage battery excellent in high-rate charge and discharge characteristics, and a hydrogen-absorbing alloy electrode suitable for the battery and a method for producing the same. The hydrogen-absorbing alloy is preferably produced by wet grinding in water a hydrogen-absorbing alloy having at least one rare earth element, nickel and at least one transition metal element, treating the resulting alloy powders in an aqueous alkali solution, and then consecutively treating the powders in an acidic aqueous solution. The hydrogen-absorbing alloy powders have a structure of a nickel-condensed layer being exposed and have many pores.

Abstract: The present invention provides an alkaline storage battery excellent in high-rate charge and discharge characteristics, and a hydrogen-absorbing alloy electrode suitable for the battery and a method for producing the same. The hydrogen-absorbing alloy is preferably produced by wet grinding in water a hydrogen-absorbing alloy comprising at least one rare earth element, nickel and at least one transition metal element, treating the resulting alloy powders in an aqueous alkali solution, and then consecutively treating the powders in an acidic aqueous solution. The hydrogen-absorbing alloy powders have a structure of a nickel-condensed layer being exposed and have many pores.

Abstract: An alkaline storage battery which is excellent in charge and discharge cycle life characteristics and high-rate discharge characteristics is provided by constructing it using an electrode made of an MmNi type hydrogen-absorbing alloy powders having modified surface. The alkaline storage battery comprises a negative electrode made using a hydrogen-absorbing alloy in the form of powders comprising at least one rare earth element, nickel and at least one transition metal in which the surface portion of the alloy has nickel in metallic state exposed at the surface, pores positioned between the nickel and the nickel, and a nickel-rich layer present on the alloy surface contacting with the pores, a positive electrode made using a metal oxide, a separator, and an alkaline electrolyte.

Abstract: The present invention provides an alkaline storage battery excellent in high-rate charge and discharge characteristics, and a hydrogen-absorbing alloy electrode suitable for the battery and a method for producing the same. The hydrogen-absorbing alloy is preferably produced by wet grinding in water a hydrogen-absorbing alloy comprising at least one rare earth element, nickel and at least one transition metal element, treating the resulting alloy powders in an aqueous alkali solution, and then consecutively treating the powders in an acidic aqueous solution. The hydrogen-absorbing alloy powders have a structure of a nickel-condensed layer being exposed and have many pores.