What is expandable graphite? Graphgraphite crystal has a layered structure of hexagonal mesh composed of carbon elements. Carbon atoms in the layer plane are strongly covalently bonded, while layers combine with van der Waals force, with weak binding and large interlayer distances. Therefore, under appropriate conditions, various chemicals such as acids, alkali metals, and salts can be inserted into graphite layers and combined with carbon atoms to form a new chemical phase —— graphite interlayer compounds. When heated to the appropriate temperature, this interlayer compound can instantly decompose quickly, producing a large amount of gas. The graphite expands along the axial direction into a new worm-like substance, namely the expanding graphite. This unexpanded graphite interlayer compound is expandable graphite.
Main uses of expandable graphite Expansible graphite adds expanded graphite to the zinc anode that can be charged with zinc, which can reduce the polarization of the zinc anode when charging, improve the conductivity of the electrode and electrolyte, provide good molding characteristics, dissolve and deform the anode, and prolong the battery life. In addition, lithium can form GICs by gas, liquid, solid, and lithium salt electrolysis and graphite. The GICs have low electrode potential and good reversibility of the inlay. Preparation of expandable graphite expanding graphite Expandable graphite mostly adopts chemical oxidation and electrochemical oxidation. The traditional chemical oxidation process is simple and stable quality, but acid waste and high sulfur content. The electrochemical method does not use oxidants, and acid can be used many times, with small environmental pollution, low cost, low yield, and high requirements for electrode materials, the current laboratory research. Except for different oxidation methods, the post-treatments, such as deacidification, washing, and drying, are the same for these two methods. Among them, the chemical oxidation method is widely used, with mature technology, and has been widely promoted and applied in industry. Price of expandable graphite The different price of expandable graphite purity is also different. The market price of expandable graphite is in the process of dynamic change. The price of expandable graphite can be found on our company's official website. If you need it, you can ask us at any time. Expandable graphite supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including molybdenum Silicide, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective expandable graphite, you are welcome to contact us or inquire at any time.
