Development of Conductive Carbon Black for New-Generation Lead-Acid Batteries
Orion Engineered Carbons (formally Carbon Black Business Unit of Degussa then later Evonik) has supplied high-quality Specialty Carbon Black to the global lead–acid battery industry for more than 40 years. The classic grades ― Lamp Black 101 and Printex G ― have been widely used in SLI, AGM and EFB batteries in both automotive and industrial applications. In the 21th century, new-generation batteries are expected to provide high dynamic charge-acceptance (DCA) and long cycle-life performance under high-rate partial state-of-charge (HRPSoC) duty. It has been widely demonstrated that the DCA performance and the cycle-life of batteries can be significantly improved by applying new types of conductive Carbon Black. Unfortunately, however, water consumption becomes more pronounced with the increased amount of Carbon Black in the negative active-material (NAM). This presentation will describe conductive Carbon Black grades recently developed by Orion that can provide high DCA performance while maintaining water consumption / hydrogen evolution at an accepted level. It will also be shown how to improve the DCA performance with standard Lamp Black 101 by optimizing the concentration of Carbon Black and lignosulfonate in the NAM. This is a significant finding since Lamp Black always ensures a rather low water consumption for lead–acid batteries.
Zhimin Yu holds a Masters Degree from Tongji University in Shanghai. After graduation, he worked for seven years in the Technical Department of Johnson Controls. He was responsible for battery development and application support for key OEM customers, such as General Motors, Ford, and Volkswagen. Zhimin is now the Technical Marketing Manager of Orion Engineered Carbons and is responsible for Conductive Carbon Black technology and business development for the battery industry in Asia-Pacific Region.