OICC Press Journal of Nanostructure in Chemistry 2193-8865 11 4 (December 2021) 2021 09 24 Fungus bran-derived nanoporous carbon with layered structure and rime-like support for enhanced symmetric supercapacitors 10.1007/s40097-021-00448-z EN Keqi Qu Key Laboratory of Bio-Based Material Science and Technology, Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, CN Weicong Wang Key Laboratory of Bio-Based Material Science and Technology, Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, CN Cai Shi Key Laboratory of Bio-Based Material Science and Technology, Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, CN Zhe Sun Key Laboratory of Bio-Based Material Science and Technology, Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, CN Houjuan Qi Key Laboratory of Bio-Based Material Science and Technology, Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, CN Junming Shi Key Laboratory of Bio-Based Material Science and Technology, Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, CN Shuai Yang Key Laboratory of Bio-Based Material Science and Technology, Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, CN Zhanhua Huang Key Laboratory of Bio-Based Material Science and Technology, Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, CN Zhanhu Guo Integrated Composites Laboratory (ICL), Department of Chemical and Bimolecular Engineering, University of Tennessee, Knoxville, TN, 37996, US Journal Article 2021 09 24 Abstract Integrating and utilizing natural resources rationally is an important strategy for sustainable development. Herein, a novel nanoporous carbon material with rime scenery-like support was firstly established, in which waste biomass fungus bran was skillfully selected as the layered structure carbon skeletons for loading carboxymethyl cellulose derived carbon particles. The dual biomass-derived carbon with the aid of activating by KMnO 4 has a unique structure and favorable electrical conductivity. The resulting sample also has a high micropore ratio, which is optimum for the formation of double layer in aqueous electrolyte. Profiting from hierarchical nanopore structure and nitrogen self-doping, the optimized carbon electrode exhibited excellent specific capacitance of 407 F g −1 at 0.5 A g −1 , remarkable rate characteristic, and superior cycling performance (96.9% remained after 5000 cycles). More importantly, the assembled symmetric supercapacitor exhibited a high energy density of 11.4 Wh kg −1 and outstanding electrochemical performance in aqueous electrolyte, which benefited from well-connected networks and multipath channels. This research realizes the utilization of waste biomass in carbon-based electrodes and offers the basis of preparation method for the next generation of sustainable energy storage devices. Graphic abstract The fabricated rime scenery-like nanoporous carbon materials exhibit ultra-high specific capacitance and the symmetric supercapacitor possesses a high energy density and power density.