Abstract: A negative electrode including a negative electrode active material layer and an additive. The additive includes a metal sulfide. The additive is distributed in the negative electrode active material layer, and/or distributed on the surface of the negative electrode active material layer. The negative electrode effectively improves the performance of the lithium ion battery, and greatly improves the capacity and cycle performance of the lithium ion battery.

Abstract: A battery includes a housing; an insulation member; and a first active substance layer and a second active substance layer having opposite polarities. The housing includes a first wall body, a second wall body, and a third wall body, forming an accommodation cavity. The first wall body is a conductive wall body and disposed opposite to the third wall body. The insulation member, the first active substance layer, and the second active substance layer are accommodated in the accommodating cavity. The second active substance layer is disposed on a surface of the first wall body that faces the third wall body. The first active substance layer is disposed between the second active substance layer disposed on the surface of the first wall body and the third wall body. The insulation member is disposed between the first active substance layer and the second active substance layer.

Abstract: A battery including a first conductive part, an electrode assembly, a second conductive part, and a first layer. The first conductive part includes a cover part and a concave part connected to the cover part. The concave part includes a first wall and a first side wall connected to the first wall. The electrode assembly is electrically connected to the first conductive part and the second conductive part, and is configured inside the concave part. Viewed in a first direction, the second conductive part and the electrode assembly partly overlap, the second conductive part is located in the first conductive part, the second conductive part includes a first surface and a second surface, and the second surface faces away from the first conductive part. The first layer includes a part located between the first conductive part and the second conductive part; and an insulating material.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 2.3, about 5 wt %?Z?about 50 wt %, 1 wt %<Y<5 wt %, and about 0.02?(Y/Z)?about 0.3; wherein the dinitrile compound is one or more compounds selected from butanedinitrile, adiponitrile, 1,4-dicyano-2-butene, and ethylene glycol bis(2-cyanoethyl) ether; and the trinitrile compound is one or more compounds selected from 1,3,6-hexanetricarbonitrile, 1,2,6-hexanetricarbonitrile and 1,2,3-tris(2-cyanoethoxy)propane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z; where about 2 wt %?(X+Y)?about 11 wt %, about 0.1?(X/Y)?about 8, and about 0.01?(Y/Z)?about 0.3. The dinitrile compound comprises a compound of Formula (5): N—R2—(O—R3)n—O—R4—CN (5). The electrolyte is capable of effectively inhibiting the increase in DC internal resistance of an electrochemical device so that the electrochemical device has excellent cycle and storage performance.

Abstract: An electrochemical device, including an electrode and an electrolyte. The electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z. Wherein about 2 wt %?(X+Y)? about 11 wt %, about 0.1?(X/Y)? about 8. The electrode including a coating, which including a single-sided sub-coating and a double-sided coating, the electrode with the single-sided sub-coating has an electrode compaction density D1, and the electrode with the double-sided coating has an electrode compaction density D2, where about 0.8?D1/D2? about 1.2. The electrolyte and D1/D2 of the electrodes has a significant effect on the cycle performance of the electrochemical device.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 2.3, about 5 wt %?Z?about 50 wt %, 1 wt %<Y<5 wt %, and about 0.02<(Y/Z)?about 0.3; wherein the trinitrile compound comprises at least one selected from the group consisting of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1,1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 2.3, about 5 wt %?Z?about 50 wt %, 1 wt %<Y<5 wt %, and about 0.02?(Y/Z)?about 0.3; wherein wherein the dinitrile compound is one or more compounds selected from the group consisting of butanedinitrile, adiponitrile, and 1,4-dicyano-2-butene; and the trinitrile compound is one or more compounds selected from the group consisting of 1,3,6-hexanetricarbonitrile, 1,2,6-hexanetricarbonitrile and 1,2,3-tris(2-cyanoethoxy)propane.

Abstract: A battery including a first conductor and a first conductive material layer. The first conductor includes a first surface and a second surface. The first surface and the second surface are two opposite surfaces of the first conductor. The first conductive material layer is disposed on the first surface. The first conductive material layer includes a first recess. The first conductor further includes a first region and a second region. A first preset spacing exists between the first region and the second region. The first region is exposed from the first recess. The second region is provided without the first conductive material layer. The battery further includes a first conductive plate. In the second region, the first conductor is connected to the first conductive plate.

Abstract: A battery includes a housing including includes a first housing body and a second housing body mounted on the first housing body, and electrically isolated from each other; a battery cell accommodated in the housing and including a first electrode plate, a second electrode plate, and a separator located between the first electrode plate and the second electrode plate; a first conductive member and a second conductive member forming a conductive structure are accommodated in the housing and electrically isolated from each other. The first conductive member electrically connects the first electrode plate and the first housing body. The second conductive member electrically connects the second electrode plate and the second housing body. The first electrode plate, the separator, and the second electrode plate are wound around the conductive structure to form the battery cell.

Abstract: A battery includes an electrode assembly and a housing. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator. The housing includes a curved surface and a plurality of side walls, the housing further includes a concave part accommodating the electrode assembly, the plurality of side walls enclose to form the concave part, and any three adjacent side walls are connected through the curved surface to form a junction. The three adjacent side walls include a first side wall formed by a main plane parallel to the first direction, a second side wall disposed parallel to the first direction and at an angle to the first side wall, and a third side wall disposed at an angle to the first direction.

Abstract: A Syringa microphylla seed extract includes the following components by weight based on a total weight of the Syringa microphylla seed extract: 0.4944-0.7142 mg/g of echinacoside, 6.624-7.617 mg/g of oleuropein, 0.4276-0.6309 mg/g of verbascoside, 3.927-4.684 mg/g of syringin, and 4.505-5.250 mg/g of forsythiaside B. A method of preparing the Syringa microphylla seed extract is disclosed. A composition for treating antibiotic-resistant infections that includes the Syringa microphylla seed extract is also disclosed.

Abstract: A battery including a negative electrode active material layer, a positive electrode active material layer and a separator. In a first direction, the positive electrode active material layer includes a first portion and a second portion connected to the first portion. The second portion includes a first end, and the first portion includes a first surface. The first surface is connected to the second portion through a first connection, the first end is away from the first connection and is an end of the positive electrode active material layer, and a thickness of the second portion in a second direction perpendicular to the first direction decreases from the first connection to the first end in the first direction.

Abstract: An electrode assembly comprises: a first electrode plate, a second electrode plate and a first layer containing an insulating material, the first layer is sandwiched between the first electrode plate and the second electrode plate, and the first electrode plate, the second electrode plate and the first layer are stacked and then partially folded back to form the electrode assembly; the first electrode plate includes a first surface and a second surface that are opposite to and connected with each other, the first surface and the second surface are formed by the folding-back and separated by an inflection point of the folding-back; a first distance is provided between the first surface and the second surface in a first direction; the first distance is different along a second direction perpendicular to the first direction.

Abstract: A battery includes a negative electrode active material layer, a positive electrode active material layer. The negative electrode active material layer includes a first portion and a second portion including a first surface and a first end. The first surface is connected to the first portion by using a first connection part. A thickness of the second portion decreases from the first connection part to the first end. The positive electrode active material layer includes a third portion and a fourth portion including a second surface and a second end. The first surface is at least partially opposite to the second surface, and the second surface is connected to the third portion by using a second connection part. A thickness of the fourth portion gradually decreases from the second connection part to the second end. The first connection part is located between the second connection part and the second end.

Abstract: A battery includes an electrode assembly; and a housing assembly made of a conductive material for accommodating the electrode assembly. The housing assembly includes a first housing and a second housing electrically insulated from each other. The electrode assembly includes a first electrode plate having a first current collector and a first active material layer; a second electrode plate having a second current collector and a second active material layer; and a separator. The first current collector includes a first blank foil region located at an edge region of the first current collector, extending from a winding start end toward a winding termination end of the first electrode plate and electrically connected to the first housing. The second current collector includes a second blank foil region located at a winding start end and/or a winding termination end of the second electrode plate; and electrically connected to the second housing.

Abstract: An electrode plate includes: a current collector, including, in a width direction, a first edge region, a second edge region, and a middle region located between the first edge region and the second edge region; a first coating layer, including a first portion and a second portion disposed on the first edge region and the second edge region respectively; and a second coating layer. A part of the second coating layer is disposed on the middle region, another part of the second coating layer is disposed on the first coating layer. The second coating layer includes an active material. A first bonding force between the first portion and the first edge region and a second bonding force between the second portion and the second edge region are both greater than a third bonding force between the second coating layer and the middle region.

Abstract: An electrochemical apparatus including an electrode assembly including a first electrode plate, a second electrode plate and a separator disposed between the first electrode plate and the second electrode plate. The first electrode plate includes a current collector and an active material layer, the current collector includes a first zone and a second zone, the second zone is provided with an active material layer, the first zone includes a third zone and a fourth zone, the third zone is arranged in overlap with the separator, and the fourth zone is provided with a conductive layer. The conductive layer is disposed in a zone of the current collector that has no active material layer disposed thereon and that does not overlap the separator.

Abstract: An electrochemical device includes: an electrode assembly and a first adhesive tape. The electrode assembly includes a body portion and a first metal portion. The body portion includes a first part and a second part, the first part is electrically connected to the first metal portion. A junction between the first part and the first metal portion in the first direction is a first boundary line, and a junction between the first part and the second part is a second boundary line. The first adhesive tape includes a first tape edge. The first adhesive tape is disposed on the first surface and the third surface. Viewed from a direction perpendicular to the first surface, the first tape edge is located between the first boundary line and the second boundary line.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 2.3, about 5 wt %?Z?about 50 wt %, 1 wt %<Y<5 wt %, and about 0.02?(Y/Z)?about 0.3; wherein wherein the dinitrile compound is one or more compounds selected from the group consisting of butanedinitrile, adiponitrile, and 1,4-dicyano-2-butene; and the trinitrile compound is one or more compounds selected from the group consisting of 1,3,6-hexanetricarbonitrile, 1,2,6-hexanetricarbonitrile and 1,2,3-tris(2-cyanoethoxy)propane.