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What is the difference between lithium batteries and colloidal batteries? Which is better between colloidal batteries and lead-acid batteries?

Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and non-aqueous electrolyte solution;

Lead acid batteries are a type of battery that can store limited electrical energy and be used in suitable locations;

Colloidal batteries are batteries in which the electrolyte is in a colloidal state and belong to a development classification of lead-acid batteries.

This article introduces the differences between lithium batteries and colloidal batteries, and which is better between colloidal batteries and lead-acid batteries?

The difference between lithium batteries and colloidal batteries

① Environmental protection: The lithium battery of solar street lights is pollution-free; Colloidal batteries are contaminated with heavy metal lead.

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

③ Long service life: Currently, lithium iron phosphate is charged 1500 times and has no memory effect. After 1500 charges, it accounts for approximately 85% of the storage capacity; And colloidal batteries are about 500 times more effective in memory.

④ Safety: The difference in safety between power lithium battery materials is that colloidal battery technology is already quite mature, with higher safety than lithium batteries.

⑤ High efficiency and good performance: Colloidal batteries have small self discharge, which is beneficial for long-term storage; High deep discharge performance is beneficial for improving the utilization rate of active substances and discharge capacity; Strong recovery ability for deep discharge and over discharge, with charging acceptance capacity exceeding national standards by more than 50%.

⑥ The working principle is different: when charging a lithium battery, the lithium ions generated on the positive electrode move through the electrolyte to the negative electrode, and the more lithium ions reach the negative electrode, the higher the charging capacity; When discharging the battery, the lithium ions embedded in the negative electrode move back to the positive electrode, and the more lithium ions return to the positive electrode, the higher the discharge capacity. Colloidal batteries use the principle of cathodic absorption to seal the battery, and the reduction effect of oxygen on the negative electrode and the increase in hydrogen overpotential of the negative electrode itself avoid a large amount of hydrogen evolution reaction.

Which is better, colloidal battery or lead-acid battery?

Lead acid batteries include two categories: colloidal and liquid batteries. These two forms of batteries are used according to regional divisions. Colloidal batteries have strong cold resistance and their energy efficiency is much better than liquid batteries below -15 ℃. Their insulation performance is excellent. If living in a place with low temperatures in winter, colloidal batteries can be chosen.

Colloidal 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 electrolyte colloidal. Batteries with a gelled electrolyte are usually referred to as colloidal batteries.

The difference between colloidal batteries and conventional lead-acid batteries is not only that the electrolyte is changed to a gel like state. Recently, a targeted coupling agent has been added to the electrode plate formula in the laboratory, greatly improving the reaction utilization rate of the active substances in the electrode plate. According to non-public information, it can reach a weight specific energy level of 70wh/kg.

The performance of colloidal batteries is superior to that of valve regulated sealed lead-acid batteries. Colloidal batteries have stable performance, high reliability, long service life, strong adaptability to environmental temperatures (high and low temperatures), strong ability to withstand long-term discharge, cyclic discharge, deep discharge, and high current discharge, as well as advantages such as self protection from overcharging and over discharge.

The colloid battery has a deep discharge protection mechanism inside, and the battery can still be connected to the load after deep discharge. Charging within four weeks does not compromise the performance of the battery. After charging, the nominal capacity of the battery is quickly restored without affecting its lifespan.

Deep discharge of lead-acid batteries will cause permanent damage to the battery. Once discharged, if it cannot be charged and restored in a short period of time, the battery will be immediately scrapped. After charging, the full length of the battery can partially recover its capacity, and the lifespan and reliability of the battery will be greatly reduced.

The above is the difference between lithium batteries and colloidal batteries, as well as which is better between colloidal batteries and lead-acid batteries. The emergence of lithium battery products is a realization of the progress of the electric vehicle industry. Although lithium batteries have many advantages, currently, electric vehicles are still mainly composed of lead-acid batteries, mainly due to imperfect technology. To replace lead-acid battery technology, lithium batteries must reach a matching height and improve cost-effectiveness in order to be accepted by more people.

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