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The electrode is the basic component of a battery, consisting of a positive electrode and a negative electrode. The important electrode materials for lithium-ion batteries include:

Important components: i.e. active substances, are substances that directly participate in electrochemical reactions. The positive electrode active material of lithium-ion batteries is lithium deintercalation compounds. Currently, lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, ternary (nickel cobalt manganese oxide), lithium ferrous phosphate, etc. have been used. The important negative electrode active materials include graphitized carbon materials, amorphous carbon materials, nitrides, silicon-based materials, new alloys, and other materials. Secondary component: It does not directly participate in electrode reactions, but can improve the conductivity and processing performance of the battery. Important materials include fluid collectors, adhesives, and conductive agents.

Lithium ion batteries can be divided into:

Chemical materials: lithium cobalt oxide (lithium manganese oxide, lithium nickel oxide, ternary materials, lithium ferrous phosphate), graphite negative electrode (artificial graphite, natural graphite, MCMB, modified natural graphite), separator, electrolyte, conductive agent (graphite: KS-6, SO; conductive carbon black, such as SuperP, acetylene black, Koqin black, etc.), PVDF (polyvinylidene fluoride, with a molecular weight ranging from 300000 to 600000, is the most commonly used adhesive for positive electrodes) NMP (N-methylpyrrolidone, a good organic solvent that can quickly dissolve PVDF), oxalic acid (used for surface cleaning and micro corrosion of copper foil, enhancing the adhesion between matrix and binder), SBR (butadiene styrene rubber, latex type binder, SBR mixed with CMC as a water-based binder for negative electrode materials), CMC (sodium carboxymethyl cellulose, pectin, mixed with SBR for dispersion and thickening) PTC (polymer positive temperature coefficient thermistor, insulated above a certain temperature, electrically conductive below that temperature), high-temperature adhesive tape (used for mechanical and electrical protection of both ends and ears of the electrode and as a termination strip), copper foil (generally using electrolytic copper foil, negative current collector, single and double-sided light copper foil generally with oil-based materials, double-sided rough copper foil generally with water-based materials), aluminum foil (rolled aluminum foil, positive current collector), etc;

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