Time：2023.08.25Browse：1
Carbon materials are chemically inert in non oxidizing media. Under normal temperature and pressure, no chemical changes will occur. Except for long-term immersion in nitric acid, hydrofluoric acid, or in fluorine, bromine, and other strong oxidizing atmospheres, interlayer compounds will slowly form. It is not corroded by other acids, bases, and salts, and does not interact with any organic compounds. There is no significant oxidation phenomenon of graphite within 450 ℃ in the air. It only reacts with water vapor above 700 ℃ and with CO and CO2 above 900 ℃. The temperature at which graphite produces carbides with certain metal and oxide powders is mostly above 1000 ℃.
The chemical reactions of carbon materials can be divided into the following three types:
(1) Gasification reaction and high-temperature oxidation reaction;
(2) Solid solid reactions with metals, ceramics, etc;
(3) Formation reaction of interlayer compounds.
2024-03-19Graphite plays a pivotal role in battery technology. As a negative electrode material for lithium-ion batteries, graphite has become a key component of modern battery technology due to its excellent lithium storage performance and cycle stability.
Graphene already exists in nature, but it is difficult to peel off a single layer structure. Graphene is stacked layer by layer to form graphite, with a thickness of 1 millimeter containing approximately 3 million layers of graphene. A pencil lightly scratches on paper, leaving traces that may be several or even just one layer of graphene.
Because the battery -specific graphene has the above nano -scale effect, good conductivity and excellent mechanical properties, it is widely studied by scientists from all over the world and produced the concept of "graphene lithium battery". Battery?1. anode materialDue to its unique two -dimensional structure, excellent electronic transmission ability, and large surface area of battery -specific graphene, it has a huge potential to replace graphite to become a new generation of lithium -ion battery negative materials. The lithium storage mechanism of graphene is similar to other carbon materials. Both sides of the elene can store lithium ions. At the same time, graphene can also store lithium because of the presence of folds. Therefore, theoretically its capacity may be twice the graphite, which is higher than 744mAh/g.In addition, graphene is mostly micr -nano -size, far less than block graphite, which makes the diffusion path of lithium ions shorter, and the laminar spac2023-04-20Electronic effect of graphene
2023-07-21Let's talk about the role of battery dedicated graphene in lithium battery
Haifeiling owns domestic advanced technology, equipment and high-level R D team, and is committed to creating well-known brand trademarks of Haifeiling products
4008-168-001
