In order to release the energy stored during the day at night, solar-powered street lights are commonly used for outdoor lighting. Lithium iron phosphate (LFP) batteries, which are essential, are the most common type of batteries. These batteries are easy to install on light poles or integrated designs due to their significant weight and size advantages. There is no longer any concern that the weight of the batteries will increase the strain on the pole, in contrast to earlier models.
Their many benefits are further demonstrated by the fact that they are more efficient and have a much larger specific capacity than lead-acid batteries. What are the primary parts of this adaptable lithium iron phosphate battery, then?
1. Cathode
Lithium is a crucial part of lithium batteries, as the name implies. Lithium, on the other hand, is an extremely unstable element. The active ingredient is frequently lithium oxide, a mixture of lithium and oxygen. The cathode, which produces electricity through a chemical reaction, is then created by adding conductive additives and binders. The lithium battery’s cathode controls both its voltage and capacity.
Generally, the higher the lithium content in the active material, the larger the battery capacity, the greater the potential difference between the cathode and anode, and the higher the voltage. Conversely, the lower the lithium content, the smaller the capacity and the lower the voltage.
2. Anode
When the current converted by the solar panel charges the battery, lithium ions are stored in the anode. The anode also uses active materials, which allow the reversible absorption or emission of lithium ions released from the cathode when current flows through the external circuit. In short, it permits the transmission of electrons via the wires.
Because of its stable structure, graphite is frequently utilized as the anode’s active material. It has little volume change, does not crack, and can tolerate extreme temperature changes at room temperature without suffering any harm. Moreover, it is appropriate for anode fabrication due to its comparatively low electrochemical reactivity.
3. Electrolyte
The safety hazards outweigh the inability to produce electricity if lithium ions pass through the electrolyte. To generate the necessary current, lithium ions only need to move between the anode and cathode. The electrolyte plays a part in this limiting function. Most electrolytes are composed of salts, solvents, and additives. Salts mainly act as channels for the flow of lithium ions, while solvents are liquid solutions used to dissolve the salts. Additives have specific purposes.
An electrolyte must have exceptional ionic conductivity and electronic insulation in order to fully function as an ion transport medium and reduce self-discharge. To ensure ionic conductivity, the lithium-ion transference number of the electrolyte must also be maintained; an amount of 1 is ideal.
4. Separator
The separator primarily separates the cathode and anode, preventing direct electron flow and short circuits, and only forming channels for ion movement.
Polyethylene and polypropylene are frequently utilized in its production. Better protection against internal short circuits, adequate safety even in overcharging situations, thinner electrolyte layers, lower internal resistance, increased battery performance, and good mechanical and thermal stability all contribute to battery quality.
Tianxiang’s solar-powered street lights are all powered by high-end lithium batteries with carefully selected high-energy-density cells. They are suitable for difficult outdoor temperature and humidity conditions, have a long cycle life, high charging and discharging efficiency, and outstanding heat and cold resistance. The batteries’ many clever protections against short circuits, overdischarge, and overcharge ensure consistent energy storage and long-lasting operation, allowing for continuous lighting even on cloudy or rainy days. Precise matching of high-efficiency solar panels and premium lithium batteries ensures a more reliable power supply and lower maintenance costs.
Post time: Jan-29-2026
