Secondary battery electrode, and method for producing same
摘要
說明書
The carbon precursor included in the raw material as an additive may include one or more selected from the group comprising cokes, pitch, thermocurable resins, and thermoplastic resins. Cokes may include petroleum or coal tar-based cokes (petroleum or coal tar pitch-derived cokes), and pitch may include petroleum-based pitch, coal tar-based pitch, or a mixture thereof. Pitch may include isotropic pitch, mesophase pitch, a mixture thereof, or the like. A resin used as the carbon precursor may include a thermocurable resin, a thermoplastic resins, or a mixture thereof. A thermocurable resin may include an epoxy resin, a polyester resin, a phenol resin, an alkyd (unsaturated polyester) resin, a polyimide resin, a vinylester resin, a polyurethane resin, a polyisocyanurate resin, a mixture thereof, or the like, and a thermoplastic resin may include a polyethylene resin, a polypropylene resin, a polyvinylalcohol resin, a polyvinylidene chloride resin, a polyethylene terephthalate resin, a polyester resin, a polystyrene resin, a polymethylmethacrylate resin, a polyvinyl chloride resin, an acrylonitrile butadiene styrene (ABS) resin, a polyamide resin, a polycarbonate resin, a polyoxymethylene resin, an acryl resin, a polyvinylsulfide resin, a polyetheretherketone resin, a polytetrafluoroethylene resin, a mixture thereof, but are not limited thereto. Without particular limitation thereto, the resin used as the carbon precursor may have a carbonization yield of 10% or more, specifically 30 to 90%, and more specifically 40 to 90%. Here, when a resin-based carbon precursor having a carbonization yield of 40% or less is used, the carbon precursor may also serve as the pore forming agent. As described above, carbon which is produced by pyrolysis of carbon precursor (pyrocarbon) may serve as a conductive material and as a binding, agent which binds the active materials, and also, may serve as the active material involved in a charge/discharge reaction.
