Provided are binder particles for an all-solid-state battery with which an all-solid-state battery having excellent battery characteristics can be obtained even in a situation in which the all-solid-state battery is produced by a dry method. The binder particles for an all-solid-state battery are formed of a polymer and have a cohesion of not less than 1% and less than 30% and a volume-average particle diameter D50 of not less than 10 μm and not more than 100 μm. Moreover, a composition for an all-solid-state battery contains these binder particles for an all-solid-state battery and solid electrolyte particles. Furthermore, a functional layer for an all-solid-state battery is formed from this composition for an all-solid-state battery. Also, an all-solid-state battery includes this functional layer for an all-solid-state battery.

Provided are binder particles for an all-solid-state battery with which an all-solid-state battery having excellent battery characteristics can be obtained even in a situation in which the all-solid-state battery is produced by a dry method. The binder particles for an all-solid-state battery are formed of a polymer and have a cohesion of not less than 1% and less than 30% and a volume-average particle diameter D50 of not less than 10 μm and not more than 100 μm. Moreover, a composition for an all-solid-state battery contains these binder particles for an all-solid-state battery and solid electrolyte particles. Furthermore, a functional layer for an all-solid-state battery is formed from this composition for an all-solid-state battery. Also, an all-solid-state battery includes this functional layer for an all-solid-state battery.

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The negative electrode may include a silicon-based negative active material and a binder, where the binder is an acryl-based copolymer, the acryl-based copolymer including an acrylic acid first monomer, an acrylonitrile second monomer, and a (meth)acrylate third monomer. The acrylic acid first monomer may include acrylic acid substituted with lithium ions. The (meth)acrylate third monomer may include an ethylene glycol group, and a weight-average molecular weight (Mw) of the (meth)acrylate third monomer is less than about 900 g/mol.

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The negative electrode may include a silicon-based negative active material and a binder, where the binder is an acryl-based copolymer, the acryl-based copolymer including an acrylic acid first monomer, an acrylonitrile second monomer, and a (meth)acrylate third monomer. The acrylic acid first monomer may include acrylic acid substituted with lithium ions. The (meth)acrylate third monomer may include an ethylene glycol group, and a weight-average molecular weight (Mw) of the (meth)acrylate third monomer is less than about 900 g/mol.

The present disclosure relates to an anode mixture for a secondary battery, an anode and a secondary battery including the same. Specifically, in one embodiment of the present disclosure, there is provided an anode mixture for a secondary battery including a binder composition, which is a mixture of an AAM/AA/AN copolymer and HASE, in a specific content range.

The present disclosure relates to an anode mixture for a secondary battery, an anode and a secondary battery including the same. Specifically, in one embodiment of the present disclosure, there is provided an anode mixture for a secondary battery including a binder composition, which is a mixture of an AAM/AA/AN copolymer and HASE, in a specific content range.

A quad-polymer composition includes monomers of (a) acrylonitrile, (a) vinylimidazole, (c) methyl acrylate and (d) either acrylic acid or itaconic acid. Such quad-polymer compositions may be used to form fibers (such as by melt spinning) that may then be annealed, stabilized, and/or carbonized to produce carbon fibers. The quad-polymer composition may be used for supercapacitors, lithium battery electrodes once carbonized, and as synthesized, it may be used for wound healing fibers, fabrics, coatings, and films, and anti-bacterial/anti-microbial fibers, fabrics, coatings and films. The carbon fibers formed from the quad-polymer composition may be used for the fiber composites for automobile, aerospace structures, marine structures, military equipment/parts, sporting goods, robotics, furniture, and electronic parts.

A nanofiber for an air filter and a method for manufacturing the same are proposed. The nanofiber may include a styrene-(meth)acrylate-acrylonitrile random copolymer having a zwitterionic functional group in a side chain. The nanofiber can greatly enhance the bonding of particulate matter (PM) particles with the surface of a polymer by having a high dipole moment derived from the zwitterionic functional group, thereby providing high efficiency of filtration (>99.9%) of the PM particles. Furthermore, the nanofiber can be very usefully used as a core material for air purifier filters and vehicle air purification filters by having low airflow resistance and excellent antibacterial properties.

A nanofiber for an air filter and a method for manufacturing the same are proposed. The nanofiber may include a styrene-(meth)acrylate-acrylonitrile random copolymer having a zwitterionic functional group in a side chain. The nanofiber can greatly enhance the bonding of particulate matter (PM) particles with the surface of a polymer by having a high dipole moment derived from the zwitterionic functional group, thereby providing high efficiency of filtration (>99.9%) of the PM particles. Furthermore, the nanofiber can be very usefully used as a core material for air purifier filters and vehicle air purification filters by having low airflow resistance and excellent antibacterial properties.

A method of preparing an acrylonitrile-based copolymer for a carbon fiber. The method includes: preparing a reaction solution including a (meth)acrylonitrile-based monomer and a first reaction solvent; adding a first portion of a radical polymerization initiator to the reaction solution to initiate polymerization; and adding a second portion of the radical polymerization initiator to the reaction solution when a polymerization conversion ratio is between 70 to 80%.