Lead Carbon Pb-C Battery

Lead carbon battery: better charge-discharge performance, more cycles, and higher efficiency

Lead carbon battery is a kind of lead-acid battery, which is made by adding acitivated carbon materials to the negative electrode of lead-acid batteries. Carbon is a very magical element with the most abundant types of compounds. Its addition greatly improves the charge and discharge performance while retaining the original power density of lead-acid batteries. At the same time, carbon lead-acid battery has high safety and reliability.

The activated carbon we add to the lead negative electrode will form a conductive network structure, which is used under energy storage conditions. The charge-discharge cycle service life of advanced lead-carbon batteries is several times that of general lead-acid batteries. In terms of environmental protection, lead carbon battery are environmentally friendly and can achieve 100% battery recycling.

The main advantages of this network structure are as follows:

Provide reaction centers: new reactive centers are formed on the surface of these carbon particles;
Form a conductive network to reduce polarization;
Form a smaller and uniform mass transfer network to promote the uniform progress of the electrochemical reaction on the surface and inside of the electrode, thereby reducing the concentrated precipitation effect of PbSO4 on the surface;
As a heterogeneous material, it hinders the growth of PbSO4 particles and makes them evenly distributed.
Improve the capacity and power characteristics of the battery through the capacitive effect of carbon.

Based on the above network structure, the lead-carbon battery advantages are to effectively suppress the sulfation trend of the negative electrode, which significantly improves the battery service life.

Moreover, carbon itself has good electrical conductivity and capacitance characteristics, so lead-carbon battery has better low-temperature start-up capabilities, charge acceptance capabilities, and high-current charge-discharge performance than traditional lead-acid batteries. When working with high current: The capacitive carbon material plays a “buffer” role. When the lead-carbon battery is charged and discharged with frequent instantaneous high-current, the current is mainly released or received by the carbon material with capacitive characteristics. At this time, the impact of the large current received by the lead metal negative electrode is small, so it is not like the traditional lead acid batteries, “negative sulfation” occurs rapidly under high current, which effectively prolongs the service life of the battery; when working at low current: It is mainly worked by the negative electrode of the sponge lead to continuously provide energy. The energy stored in the carbon by the capacitance energy due to the impact of the large current will also react with the nearby lead, and the reaction is gradually homogenized.

The advantages of lead carbon battery therefore are:

-15 years design life for 12V lead carbon battery and 20 years design life for 2V lead carbon battery

– Much less sulfation to negative plate

-Excellent high rate(high current) discharge and recharge ability

-Faster recharge efficiency saving 30% charge time

– And the overall result is greatly improved cycle life, around 4-5 times as that of general lead acid battery especially under PSoC condtion

EnerCore is a professional lead carbon battery manufacturer, including 12V and 2V battery,you are welcome to contact us.