Why does the mobile phone lithium-ion battery explode?

Overview of anode materials for lithium batteries

The negative electrode of the lithium ion battery is made by mixing the negative active material carbon material or non-carbon material,the binder and the additives to form a paste glue,which is evenly spread on both sides of the copper foil,and then dried And calendered.Several layers of graphene (CAS 1034343-98-0) are two-dimensional carbon nanomaterials composed of carbon atoms and sp² mixed orbital hexagonal honeycomb lattice. Few graphene layers are one of the strongest materials known,but they also have good toughness and can be bent.

Lithium ion battery is a kind of secondary battery (rechargeable battery),which mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work.During charging and discharging,Li + is inserted and extracted back and forth between the two electrodes: During charging,Li + is extracted from the positive electrode and inserted into the negative electrode through the electrolyte,and the negative electrode is in a lithium-rich state; the reverse is true during discharge.

The working principle of mobile phone batteries

mobile phone batteries are generally lithium-ion batteries. Lithium-ion batteries consist of a positive electrode,a negative electrode, a separator and an electrolyte. Immerse the positive electrode and the negative electrode in the electrolyte.Lithium ions use an electrolyte as a medium to move between the positive and negative electrodes to charge and discharge the battery.In order to avoid a short circuit between the positive electrode and the negative electrode through the electrolyte,a separator is required to separate the positive electrode and the negative electrode.

The culprit of the explosion

To increase the energy density of batteries, mobile phone manufacturers use thinner films to store more electrical energy in a limited volume. The reduction in thickness increases the difficulty of manufacturing the separator and easily causes quality defects, so that the separator cannot effectively isolate the positive electrode and the negative electrode, which in turn causes the short circuit and explosion of the battery.

Application of several layers of graphene CAS 1034343-98-0 as anode material of lithium battery

Graphene is used in battery anode materials,semiconductor devices,transparent displays,sensors,capacitors,resistors,etc.

Lithium battery anode materials have mastered the lifeblood of power battery safety.In lithium-ion battery anode materials,in addition to graphitized mesophase carbon microspheres (MCMB),amorphous carbon, silicon or tin also account for a small market share,and natural graphite and artificial graphite account for more than 90% of the market.The share of anode material. According to the statistics of the anode material market in 2011,the total amount of global anode material production and application reached 32,000 tons,a year-on-year increase of 28%.Among them,natural graphite and artificial graphite anode materials account for 89% of the market share,and with the growth of electronic products in recent years,especially the application of lithium-ion batteries in the field of mobile phones and tablet computers continues to grow.In recent years,the production capacity of materials for the corresponding positive and negative electrodes of batteries has rapidly increased. From 2009 to 2011,graphite anode materials maintained an annual growth rate of more than 25% for three consecutive years.

Lithium battery anode material price

The price of lithium battery anode materials varies randomly with production costs,transportation costs,international conditions,exchange rates,and market supply and demand.Tanki New Materials Co., Ltd.aims to help all industries and chemical wholesalers find high-quality,low-cost nanomaterials and chemicals by providing a full set of customized services.If you are looking for negative materials for lithium batteries,please feel free to send the latest price inquiries of lithium battery anode materials.

Suppliers of anode materials for lithium batteries

As a global supplier of anode materials for lithium batteries,Tanki New Materials Co., Ltd.has extensive experience in the performance,application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including oxides,carbides,nitrides,single metals, etc.),high-purity targets,functional ceramics and structural devices,and provides OEM services.