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Lithium batteries like to use graphite anode materials

As the European Union tries to reduce its dependence on Russian energy, the Russian president recently said Russia would try to shift its energy exports to the east, adding that there was no way for European countries to give up Russian gas immediately.

Russia supplies about 40 percent of the EU's gas, and western sanctions imposed over the conflict with Ukraine have complicated financing and logistical arrangements for existing agreements, hitting Russian energy exports, the report noted.  

Russia has been building closer ties with China and other Asian countries as the European Union debates whether to impose sanctions on Russian gas and oil and member states seek supplies from elsewhere, Reuters said.  

"So-called partners from unfriendly countries admit that they cannot survive without Russian energy, including gas," the Russian president said in a televised government meeting. There is no reasonable alternative to Russian gas in Europe right now."  

He also said Europe was driving up energy prices and destabilizing markets by talking about cutting off Russia's energy supplies. Russia, which produces about a tenth of the world's oil and a fifth of its natural gas, will need new infrastructure to increase energy supplies to Asia, he said.

He ordered Moscow to submit a plan by June 1, including "the expansion of transport infrastructure to countries in Africa, Latin America, and the Asia-Pacific region".  

He also sought to clarify the possibility of integrating two pipelines -- the Sakhalin-Khabarovsk-Vladivostok gas pipeline in the Far East and the "Power of Siberia" gas pipeline to China -- into Russia's unified gas supply system. In theory, connecting these routes to larger gas networks could allow Russia to divert gas from Europe to Asia.

Because of the ever-changing international situation, the supply and prices of international bulk graphite are still very uncertain.

Lithium-ion battery refers to a secondary battery system in which two different lithium intercalation compounds that can reversibly intercalate and deintercalation lithium ions are used as the battery's positive electrode and negative electrode, respectively. During charging, lithium ions are deintercalated from the positive electrode through the electrolyte and separator and embedded in the negative electrode; on the contrary, lithium ions are deintercalated from the negative electrode through discharge of the electrolyte the separator and embedded in the positive electrode. The negative electrode of the lithium-ion battery is made of harmful electrode active material, binder, and additives mixed to make a paste glue, which is evenly spread on both sides of the copper foil, dried, and rolled.

Advantages of graphite as anode material

Graphite is an allotrope of carbon, and the two are closely related. Graphite is the most stable form of carbon. (Diamond is a metastable allotrope of carbon. Although its hardness is much higher than graphite, it is the hardest substance in nature, but its stability is lower than that of graphite.)

The word "graphite" comes from the Greek word "graphein," which is resistant to high temperature and corrosion, has good electrical conductivity, thermal conductivity, and stable chemical properties, and is lighter than aluminum. In addition to being used as anode material for lithium-ion batteries, high-quality graphite can also be used in different fields such as fuel cells, solar cells, semiconductors, light-emitting diodes, and nuclear reactors.

In general, graphite has the advantages of high electronic conductivity, the small volume change of layered structure before and after lithium intercalation, high lithium intercalation capacity, and low lithium intercalation potential, and has become the mainstream commercial lithium-ion battery negative electrode material.

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How to get graphite?

There are two ways to obtain graphite: one is natural ore, and the other is the synthesis of coal tar. The graphite materials used in lithium-ion batteries are generally prepared by blending 55% synthetic graphite and 45% low-purity natural graphite.

Manufacturers once favored synthetic graphite because the uniformity and purity of synthetic graphite were better than natural graphite. Now it is not the same. The application of modern chemical purification methods makes it possible to obtain 99.9% pure natural graphite after heat treatment. In contrast, synthetic graphite is 99% pure, making the former more popular.

Compared with synthetic graphite, purified natural flake graphite has higher crystallinity and exhibits better electrical and thermal conductivity. In addition, natural graphite is expected to reduce the production cost of lithium-ion batteries while achieving equal or better battery performance.

High-quality graphite supplier

Luoyang Moon & Star New Energy Technology Co., LTD, founded on October 17, 2008, is a high-tech enterprise committed to developing, producing, processing, selling, and technical services of lithium-ion battery anode materials. After more than 10 years of development, the company has gradually developed into a diversified product structure with natural graphite, artificial graphite, composite graphite, intermediate phase, and other negative materials (silicon-carbon materials, etc.). The products are widely used in high-end lithium-ion digital power and energy storage batteries. If you are looking for Lithium battery anode material, click on the needed products and send us an inquiry:sales@graphite-corp.com

 


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