What about the components and structure of the lithium titanate battery?

Titanium acid lithium battery positive and negative plate (the positive active material are for ternary lithium, negative extremely lithium titanate), membrane, electrolyte, ear, stainless steel, aluminum alloy shell, etc. Positive and negative plate is the area of electrochemical reaction, the diaphragm, electrolyte with Li + transport channel, ears have the effect of direct current.

The battery when charging, Li + migration from the ternary lithium materials to the surface of a crystal, emerge from the positive plate material, under the action of electric field force, into the electrolyte, through the diaphragm, then through the electrolyte to migrate to the surface of the anode for lithium titanate crystal, then embedded anode material in lithium titanate spinel structure. At the same time, the electron flow through the anode aluminum foil, the ear, battery pole columns, column load, negative pole, the cathode ears flow to the cathode foil electrodes, then through the conductive body flows to the anode, and lithium titanate charge to make the balance.

Battery discharging, Li + from lithium titanate spinel structure materials, embedded into the electrolyte, through the diaphragm, then through the electrolyte to ternary lithium crystal surface, and then embedded in the ternary lithium materials again. At the same time, the electronic flow by the conductive to the cathode foil electrode, ear, battery cathode polar column, column load, the positive pole, the positive pole ear flow battery anode aluminum foil electrodes, and then by the conductive to ternary lithium anode, the balance of charge to.

Thus, titanateThe lithium batteryBasic principle, it is in the process of charging and discharging, the corresponding back and forth between lithium ion across the electrodes in embedded, completion of the battery charge and discharge and load of power supply.titanateLithium electricityPool of charge and discharge diagram as shown.


When the battery, the positive electron, lithium ion emergence, embedded in the cathode;The cathode embedded lithium ions and electron as rich lithium state.The process of discharging the opposite.In Li + embedded or embedded in the process of the reaction, lithium titanate (Li4TI5O12) is a kind of ideal embedded type electrode materials, Li + insert and embedded or not has no effect on the material structure, so called "zero strain" materials, thus ensuring the good cycle performance.

Lithium titanate is the molecular structure of the two different phase Li7TI5O12 and Li4TI5O12.Produce the crystal structure and crystal structure of Li4Ti5O12 Li7TI5O12 are spinel structure, and the lattice constant change is very small, also small volume change.To avoid the charge and discharge cycle of electrode materials of structural damage caused by scaling back and forth, so as to improve the cycle performance and service life of the electrode, reduced along with the increase of cycling times bring capacity attenuation, make lithium titanate has excellent cycle performance.

Lithium titanate battery electrochemistry reaction equation:


The total chemical reaction equation is:

The architecture of the lithium titanate battery

The positive: lithium iron phosphate, lithium manganese acid, or ternary material, nickel and manganese acid lithium.

Negative: lithium titanate material.

Diaphragm: with carbon as anode of lithium battery diaphragm.

: electrolyte with carbon as anode of lithium battery electrolyte.

Battery shell: the lithium battery shell of carbon as negative.

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