The reporter learned from Jilin University that the Lin Haibo team of the College of Chemistry of Jilin University is the first in the world to prepare high-performance battery-grade carbon materials from rice husks, and use this material to develop cost-effective lead-carbon batteries, which have reached the international advanced level. Recently, the scientific research results have built a 100-ton supercapacitor carbon and a kiloton battery carbon production line.
Lead-acid batteries are one of the most widely used batteries. In 2005, scientists combined lead-acid batteries with supercapacitors to invent super-cells (lead-carbon batteries), which have significantly improved performance compared to traditional lead-acid batteries. Carbon battery is called a new generation of lead-acid battery, which is a research hotspot in the field of international lead-acid batteries.
Lin Haibo introduced that rice husk contains silica and carbon. After removing silica, it can form porous carbon, and after further activation, it becomes a very valuable activated carbon material. 'This activated carbon has large pores. Mesoporous, microporous multi-stage pore structure, with excellent electrochemical energy. ' He said that only rice husk can bring such wonderful effects, other carbon materials obtained after processing such as coconut shell, palm shell, etc. This multi-level pore structure.
After more than 10 years of hard work, the team has overcome the key technologies of biomass green rice-shell capacitor carbon green preparation, rice-shell battery carbon additive and lead carbon battery anode to develop a cost-effective lead-carbon battery. Compared with ordinary lead acid Battery, lead carbon battery cycle life is increased by 6 times, charging speed is increased by 8 times, discharge power is increased by 3 times, and has the advantage of low cost.
The lead carbon battery has passed the test of the third-party authority of the National Chemical Power Product Quality Supervision and Inspection Center. The results have been published in more than 50 papers in international core journals, and applied for more than 20 invention patents.
The achievement achieved a complete industrial chain of rice-shell battery carbon materials, lead carbon batteries and product applications, mainly used in automotive start-stop power supply, automotive hybrid power and energy storage.