Fatsia Japonica-Derived Hierarchical Porous Carbon for Supercapacitors With High Energy Density and Long Cycle Life

Frontiers in Chemistry

Feng Wang¹  Gaigai Duan¹  Lihua Cao¹  Changtong Mei¹  Huiling Li¹  Shaohua Jiang²  Guoying Zhang²  Kunming Liu³  Wenhui Xu⁴  Meng Yang⁶ 

[1] Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China;College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, China;School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, China;School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, China;Shangdong Key Laboratory of Biochemical Analysis, Qingdao, China;Xiangyang Environmental Protection Monitoring Station, Xiangyang, China;

关键词: supercapacitors;    hierarchical porous carbon;    biomass materials;    energy density;    long cycle life;   

DOI  :  10.3389/fchem.2020.00089

来源: DOAJ

【 摘 要 】

Fatsia Japonica seed, which is mainly composed of glucose, has potential as a porous carbon matrix precursor for supercapacitors that can achieve high-value utilization. Cost-effective hierarchical porous carbon materials (HPC) were prepared from Fatsia Japonica by annealing at high temperature. The pore size and distribution of the HPC can be precisely controlled and adjusted by altering the activation temperature. The HPC obtained at 600°C showed favorable features for electrochemical energy storage, with a surface area of 870.3 m2/g. The HPC for supercapacitors (a three-electrode system) exhibited good specific capacitance of 140 F/g at a current density of 1 A/g and a long cycling life stability (87.5% remained after 10,000 cycles). In addition, the HPC electrode showed an excellent energy density of 23 Wh/Kg. Such hierarchical porous biomass-derived carbon would be a good candidate for application in the electrodes of supercapacitors due to its simple preparation process and the outstanding electrochemical performance.

【 授权许可】

Unknown