Lithium batteries are lithium-ion batteries (LIB for short); Lithium polymer batteries are mostly “lithium ion polymer batteries” (LPB for short). LIB and LPB use similar chemical materials and electrochemical properties. The main difference is that certain colloidal substances are used to help the battery plate adapt or absorb the electrolyte, which reduces the use of liquid electrolyte and thus improves the battery's performance. Changed from metal shell to foil packaging. Electrode materials and battery structure 1. Cathode materials (1) Lithium cathode materials: mainly LiCoO2, LiNiO2 and LiMnO2. (2) Polymeric cathode materials: mainly heterocyclic polymers such as polypyrrole (Ppy), polythiophene (PTh) and their derivatives. 2. Negative electrode materials (1) Carbon materials: principlealso natural graphite, coke and carbon fibers, etc. At present, the most advanced negative electrode layered graphite particles have adopted nanocarbon. (2) Tin oxide negative electrode material: using a mixture of SnO, SiO2 and a small amount of Al2O3, B2O3, P2O3, etc., to gradually heat up to 1 000°C or a slightly higher temperature for 12 hours under argon. atmosphere, divalent tin can be produced from mixed oxides. 3. Positive electrode structure LiCoO2 (lithium cobalt oxide) + conductive agent (acetylene black) + binder (PVDF) + current collector (aluminum foil or aluminum strip) positive electrode 4. Structure d graphite negative electrode + conductive agent (acetylene black) + thickener (CMC) + binder (SBR) + current collector (copper foil or nickel strip) The actual ingredients and production process of the negative electrodeve are quite detailed and complex.
Does a lithium battery electric drill have an insulating effect?
Because cell phone lithium batteries are made of layers of metal foil and insulating paper wrapped around each other. ?
As the current collector of lithium batteries, the thickness of the copper foil of lithium batteries is generally between 7 and 20 μm. At present, the thickness of the copper foil equipped with new energy vehicles is 8-12μm, and the copper foil mass of the whole vehicle reaches more than 10kg. The smaller the thickness of the copper sheet of the lithium battery, the lighter the weight of the battery will be.
At the same time, thinner copper foil for lithium battery also means lower resistance and the performance of the battery will also be improvedes. Therefore, reducing the quality of copper foil on batteries, reducing the raw material cost of copper foil, and providing higher energy density have become the key for copper foil to power lithium batteries.
Lithium battery is a type of battery that uses lithium metal or lithium alloy as positive/negative electrode materials and uses non-aqueous electrolyte solution. Lithium metal batteries were first proposed and studied by Gilbert N. Lewis in 1912.
In the 1970s, M. S. Whittingham proposed and began studying lithium-ion batteries. Due to the highly active chemical properties of lithium metal, lithium metal food processing, storage and use meet very high environmental requirements. With the development of science and technology, lithium batteries arebecome common. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.
Yes.
Lithium electric drill is a single-insulated hand-held electric drill, which has the advantages of safety, reliability, reasonable structure, advanced technology, fast rotation speed, high efficiency and ease of use. interview.
The lithium electric drill is a drilling tool that uses electricity as energy. It is a conventional product among power tools and it is also the most demanded power tool product.
Lithium electric drills have various torque and speed switching gears, two-speed, three-speed, and advanced drills even have regulationstepless speed and torque switching and speed regulation are what professional grade lithium battery electric drills should be. have. basic functions.