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Note: according to user requirements of nano particle can provide different size products. Product performance The unique structure of carbon nanotubes determines that they have many special physical and chemical properties.The C=C covalent bond of carbon nanotubes is the most stable chemical bond in nature, so carbon nanotubes have excellent mechanical properties.Theoretical calculations show that carbon nanotubes have great strength and toughness. Application direction Application of carbon nanotubes in cathode materials for lithium ion batteries: 1. Carbon nanotubes - silicon matrix composites Silicon, as the cathode material of lithium battery, has a very high theoretical specific capacity (4200 mAh/g). At the same time, silicon material has a low discharge potential, which is conducive to the output of higher voltage of lithium ion battery, and silicon is abundant. However, in the process of charging and discharging, the volume of silicon changes greatly (about 400%), which makes the silicon material rapidly powder and fail after several cycles, resulting in the cycling stability and rapid change. And silicon doesn't conduct well. The introduction of carbon nanotubes can not only inhibit the volume change of silicon during charging and discharging process. At the same time, the excellent electrical conductivity of carbon nanotubes also helps to improve the transport and diffusion rate of lithium ions in the material, thus improving the lithium storage performance of the composite material. 2.Carbon nanotubes - metal oxide composites Similar to silicon materials, metal oxides also have the problem of low conductivity and large volume change during charging and discharging. Carbon nanotubes can be compounded with metal oxides on the nanoscale, so as to overcome the disadvantage of poor conductivity of metal oxides and reduce the polarization phenomenon in the charging and discharging process. In addition, carbon nanotubes also provide a mechanical framework for metal oxide particles to avoid capacity degradation due to their pulverization. Storage conditions This product should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition should avoid the heavy pressure, according to ordinary goods transportation. | ||||||||||||||||||||
Q: Can you draw up a quote/proforma invoice for me? A: Yes, our sales team can provide official quotes for you.However, you must first specify the billing address, shipping address, e-mail address, phone number and shipping method. We cannot create an accurate quote without this information. Q: How do you ship my order? Can you ship “freight collect”? A: We can ship your order through Fedex, TNT, DHL, or EMS on your account or prepayment. We also ship"freight collect" against your account. You will receive the goods in Next 2-5 Days after shipments, For items that are not in stock, the delivery schedule will vary based on the item.Please contact our sales team to inquire whether a material is in stock. Q: Do you accept purchase orders? A: We accept purchase orders from customers that have acredit history with us, you can fax, or email the purchase order to us. Please make sure the purchase order has both the company/institution letterhead and authorized signature on it. Also, you must specify the contact person, shipping address, email address, phone number, shipping method. Q: How can I pay for my order? Q: About the payment, we accept telegraphic transfer,western union and PayPal. L/C is only for above 50000USD deal.Or by mutual agreement,both sides can accept the payment terms. No matter which payment method you chose, please send us the bank wire by fax or email after you finished your payment. Q: Are there any other costs? A: Beyond product costs and shipping costs, we do not chargeany fees. Q: Can you customize a product for me? A: Of course. If there is a nanoparticle that we do not have in stock,then yes, it is generally possible for us to get it produced for you. However,it usually requires a minimum of quantities ordered, and about 1-2 weeks lead time. Q. Other. A: According to every specific orders, we will discuss with customer about the suitable payment method, cooperate with each other to better complete the transportation and related transactions. | ||||||||||||||||||||
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