(555a) CO2 Conversion to 3D Graphene for Clean-Energy Application

Abstract: In the recent year, we discovered several reactions for the synthesis of 3D graphene [1-5]. In the presentation, I will highlight recent findings for CO₂ conversion to 3D graphene in my group: (1) CO₂ can react with alkaline metals (Li, Na, or K) to form various types of 3D graphene; (2) the synthesized 3D graphene materials possesses unique properties (such as high electrical conductivity and large accessible surface area); and (3) the 3D graphene materials exhibited excellent performance as electrodes for solar cells, supercapacitors, and batteries.

References:

1. H. Wang, K. Sun, F. Tao, D. J. Stacchiola, Y. H. Hu, “3D Honeycomb-Like Structured Graphene and Its High Efficiency as Counter Electrode Catalysts for Dye-sensitized Solar Cell”, Angew. Chem. Int. Ed. 52, 9210(2013).
2. W. Wei, K. Sun, L. Cheng, A. J. Pak, E. Paek, G. Hwang, Y. H. Hu, “The Bright Future for Electrode Materials of Energy Devices: Highly Conductive Porous Na-Embedded Carbon”, Nano Lett. 16, 8029(2016).
3. L. Chang, D. J. Stacchiola, Y. H. Hu, “An Ideal Electrode Material, 3D Surface-Microporous Graphene for Supercapacitors with Ultrahigh Areal Capacitance”, ACS Appl. Mater. Interface 9, 24655(2017).
4. W. Wei, B. Hu, F. Jin, Z. Jing, Y. Li, A. A. G. Blanco, D. J. Stacchiola, Y. H. Hu, “Potassium-Chemical Synthesis of 3D Graphene from CO₂ and Its Excellent Performance for HTM-free Perovskite Solar Cells”, J. Mater. Chem. A, 5, 7749 (2017).
5. L. Chang, K. Sun, Y. H. Hu, “New Chemistry for New Material: Highly Dense Meso-Porous Carbon Electrode for Electric Double-layer Capacitors with Ultrahigh Areal, Gravimetric, and Volumetric Capacitances”, ACS Appl. Mater. Interface, 10, 33162(2018).