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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 25: Poster

KFM 25.15: Poster

Donnerstag, 8. September 2022, 15:00–18:00, P2

Hierarchically Porous Carbon Derived from the Activation of Waste Chestnut Shells as High Performance Electrode Materials for Supercapacitor — •Ping Hong^1,2, Yude Wang², Huaping Zhao¹, and Yong Lei¹ — ¹Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany — ²School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China

3D hierarchical porous carbon consisting of micropores, mesopores and macropores was successfully prepared through the activation of chestnut shell with potassium bicarbonate (KHCO3). The influence of KHCO3/chestnut shell ratio on the textural properties was carefully investigated. By optimizing the amount of KHCO3, 3D hierarchical porous carbon with high specific pore surface area (2298 m2 g-1) and high total pore volume (1.51 cm3 g-1) were achieved. When applying the as-prepared 3D hierarchical porous carbon as electrode materials for supercapacitors, a high specific electric capacity of 387 F g-1 was reached at a current density of 2 A g-1. The remarkable electrochemical performances are mainly attributed to the hierarchical porous structure with the high specific surface area and the eminent total pore volume. It suggests that this hierarchical porous carbon prepared by activated by using KHCO3 would have more promising foreground in the field of energy storage.