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The Difference Between Lithium-ion Batteries And Gel Batteries, Which Is Better, Gel Batteries Or Lead-acid Batteries

Jun 12, 2020

Lithium-ion batteries are different from gel batteries. Which is better, gel batteries or lead-acid batteries? Lithium ion battery is a kind of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution; lead-acid battery is one of the batteries. Its purpose is to store limited electrical energy and use it in a suitable place; Gel batteries are batteries with electro-hydraulic colloids, and belong to a development category of lead-acid batteries.

The difference between lithium ion batteries and gel batteries

①Environmental protection: The lithium ion battery of the solar street lamp is not polluted; the colloidal battery is polluted by heavy metal lead.

②The electrolyte is different: the electrolyte of the lithium ion battery is a non-aqueous liquid organic electrolyte; the electrolyte of the gel battery is a gel electrolyte.

③Long service life: At present, lithium iron phosphate is generally charged 1500 times without memory effect. After 1500 charges, it accounts for about 85% of the storage capacity; while the gel battery is about 500 times, the memory effect is obvious.

④Safety: There are different differences in the safety of power lithium-ion battery materials. Gel battery technology is quite mature, and its safety is higher than that of lithium-ion batteries.

⑤High efficiency and good performance: small self-discharge of colloidal batteries is good for long-term storage; high deep discharge performance is good for improving the utilization rate and discharge capacity of active materials; deep discharge and over-discharge recovery ability is strong, and the charge acceptance capacity exceeds national standards by more than 50% .

⑥The working principle is different: when charging a lithium ion battery, the lithium ions generated on the positive electrode move to the negative electrode through the electrolyte, the more lithium ions reaching the negative electrode, the higher the charging capacity; when the battery is discharged, the lithium embedded in the negative electrode The ions move back to the positive electrode, and the more lithium ions return to the positive electrode, the higher the discharge capacity. Colloid batteries use the principle of cathode absorption to seal the battery. The reduction of oxygen on the negative electrode and the increase in the hydrogen overpotential of the negative electrode prevent a large amount of hydrogen evolution reactions.

Which is better, gel batteries or lead-acid batteries?

Lead-acid batteries include two types of colloid and liquid. These two types of batteries are used according to geographical area. The colloid battery has strong cold resistance. Its working energy efficiency is far better than that of liquid batteries below -15°C, and its insulation The performance is very good, if the place of life is very cold in winter, you can choose the gel battery.

Gel batteries belong to a development classification of lead-acid batteries. The simplest method is to add a gelling agent to sulfuric acid to make the sulfuric acid electro-hydraulic become colloidal. The battery with electro-hydraulic colloid is usually called a gel battery. The difference between a gel battery and a conventional lead-acid battery is not just that the electro-hydraulic is changed to a gel state. Recently, a laboratory has added a targeted coupling agent to the plate formulation to greatly improve the reaction utilization rate of the plate active substance. According to non-public data, it can reach a weight specific energy level of 70wh/kg.

The performance of the colloidal battery is better than the valve-regulated sealed lead-acid battery. The colloidal battery has stable performance, high reliability, long service life, strong adaptability to the ambient temperature (high and low temperature), and can withstand long-term discharge capacity and cycle discharge capacity. , Deep discharge and large current discharge ability is strong, with the advantages of over-charge and over-discharge self-protection.

There is a deep discharge protection mechanism inside the colloidal battery, and the battery after deep discharge can still be connected to the load. Charging within four weeks will not damage the performance of the battery. The nominal capacity of the battery will be restored quickly after charging, and it will not affect the life of the battery. The deep discharge of lead-acid batteries will inevitably cause permanent damage to the batteries. Once discharged, if the batteries cannot be recharged within a short time, the batteries will be scrapped immediately. That is, the full length of the battery can be restored to a part of the capacity after charging, and the life and reliability of the battery will be greatly reduced.

The above is the difference between the lithium ion battery and the gel battery and which is better. The emergence of lithium-ion battery products is a realization of the progress of the electric vehicle industry. Although lithium-ion batteries have many advantages, for the time being, electric vehicles are still dominated by lead-acid batteries. The important factor is the imperfect technology. To replace the lead-acid battery technology, the lithium-ion battery must achieve a matching height, and at the same time improve the cost performance, so that it can be accepted by more people.

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