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 3 wt %?(X+Y)?about 11 wt %, about 1?(X/Y)?about 6, and about 0.01<(Y/Z)?about 0.3; the trinitrile compound includes at least one selected from the group 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: A button cell includes a winding body, a first metal plate and a first layer. The winding body includes a first current collector. The first metal plate is connected to the first current collector at a first portion. The first layer covers the first portion. In the winding direction, the first layer includes a first side edge and a second side edge, the first side edge intersects with the first current collector at a first end point, and the second side edge intersects with the first current collector at a second end point. A line connecting the first end point and a winding central axis is defined as a first virtual line, a line connecting the second end point and the winding central axis is defined as a second virtual line, and an included angle between the first virtual line and the second virtual line is 54° to 66°.

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 3 wt %?(X+Y)? about 11 wt %, about 0.5<(X/Y)?about 6, about 2 wt %<Y<about 5 wt %, and about 0.01<(Y/Z)?about 0.3; the trinitrile compound includes at least one selected from the group 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 3 wt %<(X+Y)?about 11 wt %, about 0.1?(X/Y)?about 6, about 2 wt %<X?about 6 wt %, and about 0.01?(Y/Z)?about 0.3; the trinitrile compound includes at least one selected from the group 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: Methods are provided for producing a biaxially oriented nanoporous UHMWPE membrane. The method can include combining a petroleum jelly, an ultra-high-molecular-weight polyethylene (UHMWPE), and an antioxidant, forming a suspension, feeding the suspension into an extruder to produce a gel filament, pressing the gel filament to form a gel film, subjecting the gel film to an annealing temperature, and extracting the petroleum jelly from the gel film.

Abstract: A battery includes an electrode assembly, a first housing, and a second housing. The first housing includes a first bottom wall and a first peripheral wall. The second housing includes a second bottom wall and a second peripheral wall. The first peripheral wall is arranged outside the second peripheral wall in a sleeving manner. Here, the second peripheral wall includes a first annular segment and a second annular segment, the second annular segment is located on one side of the first annular segment back away from the second bottom wall, the first annular segment is spaced apart from the first peripheral wall with a spacing of T1, the second annular segment is spaced apart from the first peripheral wall with a spacing of T2, and 30%?T2/T1?95%.

Abstract: A battery includes an electrode assembly, a first housing, a second housing, and a first adhesive layer. The first housing is connected to the second housing. The first adhesive layer is located between the first housing and the second housing, the first adhesive layer includes a first section, a second section, and a third section, a boundary point between the first section and the second section is at a position from the bottom of the first adhesive layer to a distance of H/4 from a second end surface of the battery, and a boundary point between the second section and the third section is at a position at which an end of the second housing close to the first end surface is located. Thickness of the first section, thickness of the second section, and thickness of the third section are all different.

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 wt %<(X+Y)?about 11 wt %, about 0.1?(X/Y)?about 4, about 30 wt %?Z?about 50 wt %, about 2 wt %<X?about 6 wt %, and about 0.01<(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 6, 1 wt %<Y<5 wt %, about 30 wt %?Z?about 50 wt %, and about 0.02<(Y/Z)?about 0.3.

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 wt %?(X+Y)?about 11 wt %, about 1?(X/Y)?about 6, about 40 wt %?Z?about 50 wt %, and about 0.01<(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: A positive active material including a first particle and a second particle. The first particle has a chemical formula of LieCog M1-gO2-i, and the second particle has a chemical formula of LifCohN1-hO2-j. M is at least two selected from the group of Ni, Mn, Al, Mg, Ti, La, Y and Zr. N is at least one selected from a group of Ni, Mn, Al, Mg, Ti, La, Y and Zr, and 0.8?e?1.2, 0<g<1, ?0.1?i?0.2, 0.85?f?1.2, 0<h<1, ?0.1?j?0.2, the number of types of the element M in the first particle is greater than the number of types of the element N in the second particles, the particle diameter of the positive active material meets the following formula (3):(Dv90-Dv50)?(Dv50-Dv10)?2.5.

Abstract: A battery including electrode plates and a housing accommodating the electrode plates. The electrode plates include a negative electrode plate located on an outermost layer. The negative electrode plate includes a first edge extending along a first direction and a second edge extending along a second direction, and the first direction is perpendicular to the second direction. The first edge is connected to the second edge by a third edge. The first edge intersects the third edge to form a first intersection point. The housing includes a first wall, a second wall, and a third wall that are connected to each other. The first wall is connected to the second wall by a first arc wall. The first wall is connected to the third wall by a second arc wall. The second wall is connected to the third wall by a third arc wall.

Abstract: A secondary battery includes an electrode assembly and a pocket. The electrode assembly includes a plurality of electrode plates and a separator including a first separator layer and a second separator layer. The plurality of electrode plates include a first outermost electrode plate, a second outermost electrode plate, a first second-to-outermost electrode plate, and a second second-to-outermost electrode plate. The first outermost electrode plate and the second outermost electrode plate are located on two opposite sides of the plurality of electrode plates in the first direction. The first outermost electrode plate and the first second-to-outermost electrode plate are located on two opposite sides of the first separator layer. The second outermost electrode plate and the second second-to-outermost electrode plate are located on two opposite sides of the second separator layer. The pocket includes a first sidewall extending in the first direction.

Abstract: A battery cell, including a first electrode plate, a second electrode plate, a separator, and a first electrode tab. The separator is disposed between the first electrode plate and the second electrode plate. The first electrode plate, the second electrode plate, and the separator are wound along a length direction of the first electrode plate. The first electrode tab is located at an end in a width direction of the first electrode plate. In the length direction of the first electrode plate, the first electrode plate includes a first edge, and a first notch is disposed at the first edge.

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 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, about 30 wt %?Z?about 50 wt %, and about 0.01?(Y/Z)?about 0.

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 wt %<(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, about 2 wt %<X?about 6 wt %, about 30 wt %?Z?about 50 wt %, and about 0.01?(Y/Z)?about 0.

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 wt %?(X+Y)? about 11 wt %, about 0.1? (X/Y)? about 4, about 30 wt %? Z? about 50 wt %, about 2 wt %<X? about 6 wt %, and about 0.01<(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 wt %<(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, about 2 wt %<X?about 6 wt %, about 30 wt %?Z?about 50 wt %, and about 0.01?(Y/Z)?about 0.

Abstract: A battery includes a housing, an electrode assembly, a first layer and a second layer. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator. The electrode assembly is wound. The first electrode plate includes a first edge and a second edge disposed opposite to each other along a winding direction and includes a first ending end towards the second edge. Viewed along a first direction, the electrode assembly includes a first surface. The second edge divides the first surface into a first region and a second region. The first region is a region containing the first ending end. The first layer is fixed to the first region and the second region. The second layer is fixed to the first surface and at a distance from the first layer, and the second layer bonds and fixes the electrode assembly to the housing.

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 wt %?(X+Y)?about 11 wt %, about 1?(X/Y)?about 6, about 40 wt %?Z?about 50 wt %, and about 0.01<(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.