Application of lithium iron phosphate battery industry



Carbon-coated aluminium foil brings technological innovation and industrial upgrading for lithium power industry, improves the performance of lithium power products, and improves the discharge rate.


With the increasing requirements of battery manufacturers for battery performance, new energy battery materials are generally recognized in China: conductive materials, conductive coated aluminium foil, copper foil.


Its advantage is that when dealing with battery materials, they often have high rate charge-discharge performance and large specific capacity, but the cycle stability is poor and the attenuation is serious, so they have to give up.


It's a magical coating that brings the performance of batteries into a new era.


The conductive coating is composed of dispersed nano-conductive graphite coated particles and so on. It can provide excellent static conductivity and is a protective energy absorbing layer. It can also provide good covering and protection performance. The coating is water-borne and solvent-borne, and can be used on aluminium, copper, stainless steel, aluminium and titanium bipolar plates.


Carbon coating improves the performance of lithium batteries as follows:


1. Reduce the internal resistance of the battery and inhibit the increase of dynamic internal resistance during charge-discharge cycle.


2. Improving the consistency of battery packs and reducing the cost of battery packs;


3. Improve the adhesion of active materials and collectors, and reduce the cost of plate manufacturing.


4. Reduce polarization, improve rate performance and reduce thermal effect;


5. Prevent the corrosion of electrolyte to collector;


6. Comprehensive factors can prolong the service life of batteries.


7. Coating thickness: conventional one-sided thickness of 1-3 um.


In recent years, Japan and Korea have mainly developed power lithium-ion batteries with modified lithium manganate and lithium nickel cobalt manganate as cathode materials, such as Panasonic EV Energy Company, Hitachi, Sony, New Kobe Motor, NEC, Sanyo Motor, Samsung and LG.


The United States mainly develops power lithium-ion batteries with lithium iron phosphate as cathode materials, such as A123 Systems Company and Valence Company, but the main automobile manufacturers in the United States choose manganese-based cathode material system power lithium-ion batteries in their PHEV and EV. It is said that the American A123 Company is considering entering the field of lithium manganate materials, while Germany. European countries such as China mainly adopt the way of cooperation with battery companies of other countries to develop electric vehicles, such as Daimler Benz and Saft Union of France, Volkswagen of Germany and Sanyo Agreement of Japan. Volkswagen in Germany and Renault in France are also developing and producing power lithium-ion batteries with the support of their governments.


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