Abstract: An electrode, a lithium battery, and a motor vehicle are provided. The electrode includes a current collector and an electrode active material layer arranged on at least one side surface of the current collector. The electrode active material layer includes at least two electrode active material sub-layers. The electrode active material sub-layers meet: n×?i?10000, n?2, and ?i?5000; and Hi-1<Hi. The first electrode active material sub-layer is in contact with the current collector.

Abstract: A positive electrode material and an application thereof are provided. The positive electrode material comprises a secondary particle formed by stacking a plurality of primary particles. The positive electrode material further comprises a rock-salt phase cladding layer disposed on a surface of the secondary particle. A ratio of a particle size of the secondary particle to an average particle size of the primary particles is greater than or equal to 1.5; and the primary particles and the rock-salt phase cladding layer respectively comprise a nickel-based active material.

Abstract: An electrode plate includes an electrode active material layer. The electrode active material layer includes a three-dimensional conductive network base, and an electrode active material and a binder that are loaded on the three-dimensional conductive network base. The three-dimensional conductive network base and the electrode active material satisfy a relational expression below: d × 6 ? D 2 × ( m ? / ? ? D 3 6 ) ? V ? ( D 3 - ? ? D 3 6 ) × ( m ? / ? ? D 3 6 ) where V is an actual volume of the three-dimensional conductive network base, whose unit is cm3; m is mass of the electrode active material, whose unit is g; D is a D50 particle size of the electrode active material, whose unit is ?m; ? is true density of the electrode active material, whose unit is g/cm3; and d is a thickness of a single layer carbon atoms with a value of d is 0.334 nm.

Abstract: A battery includes a positive electrode plate, a negative electrode plate, an electrolyte solution, and a separator between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive current collector and a positive material layer disposed on the positive current collector. The negative electrode plate includes a negative current collector and a negative material layer disposed on the negative current collector. The positive electrode plate and the negative electrode plate are configured to have a strong liquid retention capability for the electrolyte solution that can reduce the occurrence of lithium plating during charging.

Abstract: A lithium iron phosphate positive electrode active material includes a first lithium iron phosphate material and a second lithium iron phosphate material. D1mo is a first particle size of first particles that have a largest volume distribution value of the first lithium iron phosphate material, and 0.3?D1mo?3.2. D2mo is a second particle size of second particles that have a largest volume distribution value of the second lithium iron phosphate material, 1?D2mo?5, and D1mo<D2mo. A distribution discreteness of the first particle size of the first lithium iron phosphate material is A1, and a distribution discreteness of the second particle size of the second lithium iron phosphate material is A2, where 1?A1?3, and 2?A2?4. D1mo and A1 meet: 4.07<A1×(2.31+D1mo)<16, and D2mo and A2 meet: ?0.4<A2×(D2mo?1.15)<14.

Abstract: A lithium iron phosphate positive electrode active material includes a first lithium iron phosphate material that meets: 0.49<0.643D1mo+0.439A1<2.3, and a second lithium iron phosphate material that meets: 0.41<1.07D2mo+2.44A2?1.70D2mo×A2<1.9. D1mo is a particle size of first particles that have a largest volume distribution value of the first lithium iron phosphate material. D2mo is a particle size of second particles that have a largest volume distribution value of the second lithium iron phosphate material. A1 represents a sphericity of the first lithium iron phosphate material. A2 represents a sphericity of the second lithium iron phosphate material. 0.3?D1mo?3.2, 1?D2mo?5, and D1mo<D2mo.

Abstract: A lithium iron phosphate positive electrode active material includes: a first lithium iron phosphate material having a particle size of D1v50 ?m in a range of 0.3-0.95 at 50% cumulative volume distribution of the first lithium iron phosphate material, and a second lithium iron phosphate material having a particle size of D2v50 ?m in a range of 1.0-3.5 at 50% cumulative volume distribution of the second lithium iron phosphate material. Particle sizes of the lithium iron phosphate positive electrode active material are respectively Dv90 ?m, Dv10 ?m, and Dv50 ?m at 90%, 10%, and 50% cumulative volume distribution of the lithium iron phosphate positive electrode active material, a particle size of the lithium iron phosphate positive electrode active material is Dn50 ?m at 50% cumulative number distribution of the lithium iron phosphate positive electrode active material, and 0.16 ? D v ? 90 - D v ? 10 D v ? 50 + D v ? 50 × D n ? 50 ? 31.1 .

Abstract: A positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer arranged on at least a surface of the positive electrode current collector. The positive electrode active material layer includes a positive electrode active material, which includes a first lithium iron phosphate material and a second lithium iron phosphate material. When the cumulative volume distribution percentage of the first lithium iron phosphate material is 50%, the particle size is D1v50 ?m. When the cumulative volume distribution percentage of the second lithium iron phosphate material is 50%, the particle size is D2v50 ?m. D1v50 is 0.3-0.95, and D2v50 is 1.0-3.5. When the volume density of the positive electrode active material reaches a maximum value, the particle size is Dmo ?m, the compaction density of the positive electrode sheet is PD g/cm3 under a pressure of 1.5 Mpa, and 0.45?PD×Dmo?12.38.

Abstract: A HEMT structure includes a compound semiconductor substrate, a gate electrode, a source electrode, a drain electrode, a first metal pillar, a second metal pillar, a dielectric layer, and a metal layer. The gate electrode is disposed on the compound semiconductor substrate. The source electrode is disposed on the compound semiconductor substrate at a first side of the gate electrode. The drain electrode is disposed on the compound semiconductor substrate at a second side of the gate electrode. The first metal pillar is disposed on the source electrode. The second metal pillar is disposed on the drain electrode. The dielectric layer is disposed on the compound semiconductor substrate. The dielectric layer surrounds the gate electrode, the first metal pillar, and the second metal pillar. The metal layer is disposed on the dielectric layer. The metal layer straddles the gate electrode, the first metal pillar, and the second metal pillar.

Abstract: A compound of the general formula: wherein x is equal to or greater than 0.175 and equal to or less than 0.325 and y is equal to or greater than 0.05 and equal to or less than 0.35. In another embodiment, x is equal to zero and y is greater than 0.12 and equal to or less than 0.4. The compound is also formulated into a positive electrode for use in an electrochemical cell.

Abstract: A method for preparing a lithium iron phosphate positive electrode material includes: sequentially grinding, spray-drying and sintering a first mixture slurry containing iron phosphate, a lithium source, a carbon source and a solvent to obtain a spherical first lithium iron phosphate material; sequentially grinding, spray-drying, sintering and crushing a second mixture slurry containing iron phosphate, a lithium source, a carbon source and a solvent to obtain a second lithium iron phosphate material with an irregular morphology; and mixing the first and second lithium iron phosphate materials in equal mass ratio to obtain a lithium iron phosphate positive electrode material, the fitted value of the maximum compaction density of which is C, where C=0.0847t1+0.0196T1?0.0095t2+0.0261T2?33.6716.

Abstract: A flexible electrode and a fabrication method therefor are provided. The flexible electrode is formed by mixing organic-soft-matrix with inorganic-hard-material. The inorganic-hard-material is composed of silicate lamellar blocks and electrochemically active materials. Each of the silicate lamellar blocks is formed by multiple stacked nano-scaled sheet-like silicate lamellae. The organic-soft-matrix includes conductive polymer and binder. The binder is water-soluble and ionically conductive. The flexible electrode has a floor-ramp like opened-perforated layer structure formed by hierarchically aggregated inorganic silicate lamellar blocks, and pores of the opened-perforated layer structure are filled with the organic-soft-matrix, so as to form a network channel structure having organic phase and inorganic phase interlaced with each other.

Abstract: Disclosed are a mixed positive electrode material, a positive electrode plate and a manufacturing method therefor, and a battery. The mixed positive electrode material includes: a ternary material and a phase change material, where the phase change material undergoes a phase change in a charging/discharging voltage range of the ternary material, the ternary material has a single crystal structure, and the phase change material has a single crystal structure or an aggregate structure; a mass fraction ratio of the ternary material to the phase change material is 70:30 to 99.8:0.2; and the ternary material has a nanohardness of 0.001-5 Gpa, and the phase change material has a nanohardness of 0.01-10 GPa.

Abstract: A dispersant for a lithium ion battery and a preparation method thereof, a positive slurry, and a lithium ion battery are provided. The dispersant includes a structural unit A derived from N-vinylpyrrolidone, a structural unit B derived from a conjugated diene monomer, and a structural unit C derived from an organic acid monomer. The organic acid monomer includes one or more of an unsaturated sulfonic acid monomer, an unsaturated phosphoric acid monomer, and an unsaturated carboxylic acid monomer.

Abstract: A semiconductor chip includes an active device and a passive device formed over a substrate. A passivation layer covers the active device and the passive device. A barrier structure surrounds the active device. A ceiling layer is formed across the barrier structure over the active device. The ceiling layer has an opening exposing the barrier structure.

Abstract: A dispersant for a lithium ion battery and a preparation method thereof, a positive slurry, and a lithium ion battery are provided. The dispersant includes a structural unit A derived from a solvophilic monomer, a structural unit B derived from a conjugated diene monomer, and a structural unit C derived from a high-adhesion monomer. The solvophilic monomer includes one or both of N-vinylpyrrolidone and an acrylamide monomer. The high-adhesion monomer includes one or both of an unsaturated nitrile monomer and an acrylate monomer.

Abstract: The present invention discloses a composite positive electrode material, a positive electrode plate and a preparation method thereof, and a battery. The composite positive electrode material comprises a ternary material (11) and a phase-transition material (12). The phase-transition material (12) undergoes phase transition in the charge/discharge voltage window of the ternary material (11). The ternary material (11) has a single crystal structure, the phase-transition material (12) has a single crystal structure or a poly-crystalline structure, and the phase-transition material (12) is coated on the surface of the ternary material (11). The weight ratio of the ternary material (11) to the phase-transition material (12) is 80:20-99.8:0.2. The ternary material (11) has a nanohardness of 0.001-5 GPa, and the phase-transition material (12) has a nanohardness of 0.01-10 GPa.

Abstract: Provided is a lithium-ion battery, including a positive electrode plate, a separator, and a negative electrode plate. The separator is arranged between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode active layer laminated in sequence. A positive electrode active material in the positive electrode active layer includes lithium manganese iron phosphate and a ternary material. The negative electrode plate includes a negative electrode current collector and a negative electrode active layer laminated in sequence. The negative electrode active layer includes a composite layer and a lithium replenishing layer. A negative electrode active material in the composite layer includes a carbon material and SiOx. An areal density of lithium in the lithium replenishing layer is m2=a*M1*m1*?*(1??)/M2.

Abstract: A positive electrode active material of a lithium ion battery includes lithium manganese iron phosphate and a ternary material. A negative electrode active material is graphite. The lithium ion battery meets the following formulas: 1.08 ? M 3 * ? 3 * y / M 1 * ? 1 * A 1 + M 2 * ? 2 * A 2 * x ? 1.12 ? and 0.49 ? M 1 * 1 - ? ? 1 * A 1 + M 2 * 1 - ? 2 * A 2 * x / M 3 * 1 ? - ? 3 * y ? 1.

Abstract: Provided is a positive electrode plate, including a current collector and a positive electrode active layer arranged on the current collector. The positive electrode active layer includes m positive electrode active sub-layers. A positive electrode active material in each positive electrode active sub-layer includes a main positive electrode material and an auxiliary positive electrode material. The D50 particle size of the main positive electrode material in the positive electrode active layer satisfies 1/(?{square root over (2)}?1)n?1D501?D50n?n(?{square root over (2)}+1)n?1D501. The D90 particle size of the auxiliary positive electrode material is less than the D10 particle size of the main positive electrode material in a first positive electrode active sub-layer.