Abstract: Disclosed is a solid lithium-lead blanket for a fusion reactor, where a solid lithium-lead alloy is adopted as a neutron multiplier and a tritium breeder, and is placed in a form of a unitary or binary pebble bed inside a structural skeleton composed of structural materials; and nuclear thermal deposition in the solid lithium-lead alloy generated due to an interaction between the solid lithium-lead alloy and a fusion neutron is moved out by a coolant. A proportion of lead atoms in the solid lithium-lead alloy is low, so that, under normal operations and accident conditions of the blanket, the solid lithium-lead alloy always remains in a solid state without melting, and tritium can be brought out of the reactor by purge gas flowing through the pebble bed to allow tritium self-sufficiency. The blanket of the present disclosure does not require beryllium to meet the requirements of tritium breeding.

Abstract: Disclosed is a porous silicon negative electrode material, comprising a sparse-silicon inner core, and a transition ring, a dense-silicon ring and a carbon coating layer which are sequentially coated on the surface of the sparse-silicon inner core. In the sparse-silicon inner core, the transition ring and the dense-silicon ring, the porosity sequentially decreases, and the silicon density sequentially increases. Further disclosed are a negative electrode sheet and a lithium-ion battery which are prepared from the described porous silicon negative electrode material. The porous silicon negative electrode material of the present disclosure effectively reduces the expansion and contraction stress of the electrode material during cycle and slows down the capacity attenuation, and thus the battery capacity retention rate is high, and the cycle performance is stable.

Abstract: The present disclosure provides a porous silicon-carbon anode electrode material. The anode electrode material has a core-shell structure and the core-shell structure sequentially includes a porous sparse silicon-carbon core, a transition layer, a dense silicon-carbon layer, and a carbon coating layer from inside to outside. Porous carbon of the porous silicon-carbon anode electrode material in the present disclosure has a porous gap structure. Metal elements doped in the porous carbon with the silicon particles distributed in the gaps of the carbon skeleton structure, the carbon coating layer, and the dense carbon layer have good electrical conductivity, which may improve the conductivity of the material.

Abstract: Disclosed are a cathode plate and a preparation method therefor, and a lithium ion battery, which relate to the technical field of batteries. The cathode plate includes: a cathode current collector and a cathode film provided on the cathode current collector, wherein a cathode active material of the cathode film comprises a first active material, a second active material and a third active material, the first active material is a medium-nickel low-cobalt or cobalt-free transition metal oxide, the second active material is a high-nickel transition metal oxide, and the third active material is a lithium-containing phosphate having an olivine structure. A medium-nickel material and a high-nickel material are compounded, which can improve the energy density, low-temperature dynamic performance and cycle performance of the material; the phosphate material and the layered transition metal material have different discharge plateaus, which can improve the low-temperature power performance of the material.

Abstract: The disclosure relates to a graphite-silicon composite anode electrode material, a preparation method therefor, and the application thereof.

Abstract: The present disclosure belongs to the technical field of secondary batteries, and in particular, to a battery and an electric device. A capacity voltage difference ratio of the battery in a capacity test at 45° C. and 1/1C, which is the ratio of an intensity maximum value Q1 between a high-nickel H2-H3 phase transition peak 3.9-4.2 V to an intensity Q2 at 3.9 V of the battery satisfies 1<Q1:Q2?1.6; a positive electrode sheet of the battery comprises a positive electrode active material, and the positive electrode active material comprises a transition metal oxide A: Lia1(Nix1Coy1Mnz1Gb1)O2-c1Dc1, and a transition metal oxide B: Lia2(Nix2Coy2Mnz2Mb2)O2-c2Ec2. The positive electrode active material provided in the present disclosure can take into account lower costs, low-temperature dynamic performance, high-temperature cycle performance and high-temperature storage performance.

Abstract: Disclosed is a lithium ion battery. The lithium ion battery comprises: a positive electrode piece, comprising a positive electrode coating area and a positive electrode empty foil area, herein the positive electrode coating area has macro-pores and micro-mesopores, the specific surface area of the macro-pores of the positive electrode coating area is 3.0˜7.0 m2/g, and the specific surface area of the micro-mesopores of the positive electrode coating is 2˜5 m2/g; and a negative electrode piece, comprising a negative electrode coating area and a negative electrode empty foil area, herein the negative electrode coating area has macro-pores and micro-mesopores, the specific surface area of the macro-pores of the positive electrode coating area is 0.8˜2.0 m2/g, and the specific surface area of the micro-mesopores of the positive electrode coating is 0.6˜1.7 m2/g.

Abstract: A heat-collecting and energy-efficient pot for gas stove is formed of a main body, an outer casing outside said main body, a top edge made integrally with said main body, a base of said main body smaller than said top edge, a loop molded inwards at the bottom of said outer casing, said loop being in contact with said base, a plurality of through-holes evenly provided on said loop for the flame to pass through, two symmetrical handles on said outer casing, a plurality of smoke exhaust holes on the wall between said two handles at the upper end of said outer casing, and a heat-collecting chamber between said outer casing and said main body; when the heat-collecting and energy-efficient pot for gas stove is used, the extended flame enters the heat-collecting chamber via the through-holes and exchanges heat with the side wall of the main body to facilitate energy collection and the smoke is discharged from the smoke exhaust holes.

Abstract: Disclosed are a fast-charging graphite and a battery. The graphite has a graphitization degree of 90-97% and a lithium-ion diffusion coefficient of 2.3×10?14?8.7×10?12 cm2/s at 25° C. and a state of charge (SOC) of 10%. The battery includes a cathode plate, an anode plate, a separator arranged between the cathode plate and the anode plate, and an electrolyte. The anode plate includes an anode current collector and an anode coating coated on at least one side of the anode current collector. The anode coating includes an anode active material, and the anode active material includes the fast-charging graphite.

Abstract: An assembly structure of a cover and a terminal for a power battery, including a cover and a terminal. The terminal includes a base and a post extending downwards from the base. The cover is provided with a mounting hole through which the cover is inserted against the terminal. A high-temperature resistant component is provided between the base and the cover, and a conductive block is riveted to a lower end of the terminal. A sealing member is provided between the conductive block and the cover. Different from the existing terminals, the present terminal is T-shaped. Therefore, current carrying area and capacity of the upper surface of the terminal are increased. Further, the riveting structure is provided at a bottom of the terminal, which can avoid the inaesthetic appearance of the terminal caused by soldering. The reliable assembly structure can avoid the terminal loosening and short circuit of the cell.

Abstract: An assembly structure of a cover and a terminal for a power battery, including a cover and a terminal. The terminal includes a base and a post extending downwards from the base. The cover is provided with a mounting hole through which the cover is inserted against the terminal. A high-temperature resistant component is provided between the base and the cover, and a conductive block is riveted to a lower end of the terminal. A sealing member is provided between the conductive block and the cover. Different from the existing terminals, the present terminal is T-shaped. Therefore, current carrying area and capacity of the upper surface of the terminal are increased. Further, the riveting structure is provided at a bottom of the terminal, which can avoid the inaesthetic appearance of the terminal caused by soldering. The reliable assembly structure can avoid the terminal loosening and short circuit of the cell.