Graphene and Porous Carbon: From Large Scale Production to Supercapacitor Application
Institute of Coal Chemistry, Chinese Academy of Sciences
Abstract: Oxidation-reduction method is a primary strategy for mass production of graphene materials. The chemical engineering process is consisted of synthesis, purification, drying and thermal reduction of graphite oxide. However, due to the special two-dimensional nanostructure of graphene, it is a big challenge for the scale-up preparation and application of the material.
Since 2007, we initiated the pioneer research on graphene. On 2014, we mastered the key technology for mass production of graphene and set up a pilot plant with capability of one ton per year. On the pilot line, we can produce powder and slurry form graphene products in kilogram batch, and the products has been supplied to over 300 customers around the world. According to the energy storage application of graphene materials, we carried out a series of common science and technology investigation such as surface chemistry, macroscopic assembly and nano-dispersion etc.
Collaborated with the Shanxi Sanwei Group, we built up a platform for assembly and evaluation of advanced energy storage devices. We fabricated the wounded and stacked type supercapacitors, and realized the demonstration of these devices in the PV street light and EV applications. Therefore, we have bridged up the innovation from raw materials, composite electrodes, energy storage devices to final applications.
Besides, we also cooperate with the Meijin Energy Group to initiate the pilot trial of activated carbon for supercapacitor. The research and development of graphene and activated carbon, as well its application in supercapacitor significantly enhanced the energy and power density of the final devices.
Key words: graphene; activated carbon; supercapacitor; assembly; energy storage
Biography: Dr. Cheng-Meng Chen, born in 1985, associate professor of the Institute of Coal Chemistry, Chinese Academy of Sciences, principal investigator of Group 709, the founder of Carmery® brand. He is the member of the Youth Innovation Promotion Association of CAS, Committee of China Innovation Alliance of the Graphene Industry, Chinese Society of Particuology, vice group leader of TG2 of China Graphene Standardization Work Group of SAC etc. He is engaged in R&D on carbon materials for applications in energy storage and functional composites. He has been in charge of more than 20 projects, and published more than 80 papers in Adv Mater, Adv Func Mater, Chem Commun, J Mater Chem, Carbon etc., with over 2000 citations. Dr. Chen held 11 granted patents, directed 7 standards and published 1 book at Springer.