Preparation of graphite ①Mesophase UHP Graphite Electrode Micro Beads (MCMB) is the use of coal tar pitch, petroleum heavy oil, etc. Preparation of non-graphite type ② Non-graphitizable type-hard carbon (the most potential for development) Hard carbon is not easy to graphitize. The crystal size is small, usually below a few nanometers, and it is randomly arranged. Sn and Li can be reversibly formed into The alloy of Li4. Poor cycle performance. Problem:
A. Chemical vapor deposition of hydrocarbons (CVD) reaction, and then heat-treated at different temperatures to form the negative electrode (4) B. (3) Preparation of A and graphite. Its shape is spherical, and its crystal structure is basically the same as graphite. The discharge curve of the material is sloping, which is beneficial to use voltage to monitor the consumption of battery capacity. Negative electrode (7)-transition metal nitride (Li—M—N, M=Co, Ni, Cu, etc.15V (VS Li+/Li)
, the first week charge and discharge efficiency is about 88%-90%, and the cycle and high current performance are good. Negative electrode (2) Graphite has a layered structure, which is formed by stacking the carbon mesh plane along the C axis with a layer spacing of 3. Problem: Lithium intercalation-the lithium removal potential is high (1. Its main features: high lithium insertion capacity, generally up to 600mAh/g. heated at 350-500 ℃ temperature and separated, washed, dried and classified and other processes
The prepared carbon microspheres with an average particle size of 6-10 microns are then subjected to graphitization heat treatment at 28000C to obtain carbon materials. The lithium is embedded between the carbon layers.3V (VS. The carbon layers are combined with weak van der Waals forces. The actual specific capacity of MCMB is about 310-330mAh/g, the average lithium insertion potential is about 0. It is a carbon material with an almost amorphous structure that is different from graphite. There are fine voids. The average lithium insertion potential is about 0.5V, VS..
https://www.china-graphiteelectrode.com/product/graphite-electrode/uhp.html
A. Chemical vapor deposition of hydrocarbons (CVD) reaction, and then heat-treated at different temperatures to form the negative electrode (4) B. (3) Preparation of A and graphite. Its shape is spherical, and its crystal structure is basically the same as graphite. The discharge curve of the material is sloping, which is beneficial to use voltage to monitor the consumption of battery capacity. Negative electrode (7)-transition metal nitride (Li—M—N, M=Co, Ni, Cu, etc.15V (VS Li+/Li)
, the first week charge and discharge efficiency is about 88%-90%, and the cycle and high current performance are good. Negative electrode (2) Graphite has a layered structure, which is formed by stacking the carbon mesh plane along the C axis with a layer spacing of 3. Problem: Lithium intercalation-the lithium removal potential is high (1. Its main features: high lithium insertion capacity, generally up to 600mAh/g. heated at 350-500 ℃ temperature and separated, washed, dried and classified and other processes
The prepared carbon microspheres with an average particle size of 6-10 microns are then subjected to graphitization heat treatment at 28000C to obtain carbon materials. The lithium is embedded between the carbon layers.3V (VS. The carbon layers are combined with weak van der Waals forces. The actual specific capacity of MCMB is about 310-330mAh/g, the average lithium insertion potential is about 0. It is a carbon material with an almost amorphous structure that is different from graphite. There are fine voids. The average lithium insertion potential is about 0.5V, VS..
https://www.china-graphiteelectrode.com/product/graphite-electrode/uhp.html
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