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- January 17, 2023
- battery industry, battery knowledge, lead acid battery
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- 05 mins
Promising And Systematic Report Of Lead Carbon Battery
- Introduction to lead carbon battery
- Lead carbon battery advantages vs disadvantages
- Layout of lead carbon battery industry
- Lead carbon battery industry standard
The lead-acid battery is composed of lead dioxide positive plate, lead negative plate, microfiber diaphragm, sulfuric acid electrolyte, battery shell, and pole. When discharging, lead dioxide on the positive plate and sulfuric acid electrolyte undergo a reduction reaction to obtain electrons to generate sulfuric acid.
Lead carbon battery is a properly promising lead-acid battery in energy storage batteries. The latest top 10 energy storage battery manufacturers in China will be a good choice to learn more about energy storage batteries. In terms of energy storage, it has its unique advantages.
Lead, the spongy lead on the negative plate and the sulfuric acid electrolyte undergo an oxidation reaction to generate lead sulfate, that is, bipolar sulfation. When charging, it returns to its original state, the positive electrode generates lead dioxide, and the negative electrode generates spongy lead.
Introduction to lead carbon battery
Lead carbon batteries are low-cost and large-capacity, and have become one of the options for energy storage batteries. Lead carbon battery is a capacitive lead-acid battery, which is a technology evolved from traditional lead-acid batteries. It adds activated carbon to the negative electrode of lead-acid batteries, which can significantly improve the life of lead-acid batteries.
The lead carbon battery combines the lead-acid battery and the supercapacitor, which not only takes advantage of the supercapacitor’s instantaneous large-capacity charging, but also takes advantage of the specific energy of the lead-acid battery, and has a very good charge and discharge performance – 90 minutes and it can be fully charged. Moreover, due to the addition of graphene, the sulfation of the negative electrode is prevented, which improves a factor of battery failure in the past and prolongs the battery life.
Lead carbon battery material technology is the mainstream technology in the field of energy storage batteries.
Due to its outstanding advantages such as low cost and high safety, large-capacity lead carbon energy storage batteries can be widely used in various new energy storage systems such as solar energy, wind energy, and wind and solar hybrids, smart grid, micro-grid system, power supply energy storage system in areas without mains power and harsh grid, power frequency regulation and load tracking system and energy storage and charging system in living quarters, etc.
Lead carbon battery advantages vs disadvantages
Compared with vanadium batteries at this stage, lead carbon batteries are the lowest-cost electrochemical energy storage technology among several types of batteries. And because the lead carbon battery is suitable for working under partially charged conditions and has good safety, it is suitable for application in various scales of energy storage.
Under the similar output power level, discharge time, efficiency, life and other indicators, the construction cost of lead carbon batteries is only half of that of lithium batteries and a quarter of that of vanadium batteries. Compared with vanadium battery, carbon batteries have stronger competitive advantages.
The main problem with lead carbon batteries is that energy storage per unit weight is at an obvious disadvantage compared to vanadium batteries. The energy storage density of traditional lead-acid batteries is only 30-40Wh/kg, and the energy storage density of lead carbon batteries can reach 30-60Wh/kg after improvement, but it is still lower than the energy storage level of 120-200Wh/kg of lithium battery packs.
Therefore, in environments with strict requirements on battery weight, such as consumer electronics and new energy vehicles, ordinary lead-acid batteries or lead carbon batteries do not have a strong competitive advantage. However, in the environment of large-scale stationary energy storage, the construction of energy storage power stations is not as strict as the application environment of consumer electronics for the consideration of battery volume and quality, so the disadvantage of lead carbon batteries in this respect is not obvious.
At the same time, in view of the fact that the construction environment of the energy storage station is not fixed, it may be built in an environment such as high altitude or facing extreme climate. The energy storage performance of lead carbon batteries in extreme high and low temperature environments is more stable than that of lithium batteries, and the storage capacity and working power are less affected. Compared with other batteries, they also have obvious advantages.
Layout of lead carbon battery industry
Traditional lead-acid batteries occupy the mainstream technical route and need to be upgraded. Since lead carbon batteries are essentially an upgraded product of traditional lead-acid batteries, the current large-scale competitors in the industry are mainly leaders in the lead-acid battery industry, mainly including Tianneng, Sacred Sun, Narada Power, and Shoto Group and other enterprises, the technical routes adopted are basically the same, and the homogeneous competition is more obvious.
International Power Company (Axion) in the United States established a lead carbon battery production line in 2006, and began to sell lead carbon batteries in batches in 2009. Lead-acid battery manufacturers in China have carried out research and development and production of lead carbon batteries one after another, and Sacred Sun has carried out localized production of lead carbon batteries in Chinese factories.
Narada has developed 2MWh in Lin’an, 4MWh micro-grid energy storage in Luxi Island, Zhejiang, and 6MWh in Zhuhai Wanshan Island. In 2018, Chaowei Group “lead carbon battery 2V1000 for power energy storage.
Lead carbon battery industry standard
Lead carbon batteries have high requirements for innovation capabilities and technical reserves. As a new energy storage technology, lead carbon batteries require a lot of basic research and the support of a complete R&D system.
The manufacturing process of battery products is also relatively complicated. Important processes in the production process, such as casting and welding, chemical formation and coating, etc., as well as alloy formula proportion, grid material innovation and other production processes.
According to existing lead carbon batteries, there are disadvantages such as low capacity of a single battery, short cycle life, and low energy density. Scientists have designed and invented a large-capacity lead carbon energy storage battery preparation technology using the unique aluminum-based lead alloy grid preparation technology.
The aluminum-based lead alloy grid is used to replace the die-cast lead alloy grid in the traditional lead carbon battery, which greatly improves the battery capacity, higher energy density, longer cycle life under shallow charge and discharge conditions, and reduces the overall weight of the battery.
