Biomass Straw Based Activated Porous Carbon Materials for High-Performance Supercapacitors

• 作者: Dongqi DONG Jie WANG Mengdie GUAN Qihao SUN Xiaoling ZHANG Xinle ZHANG Yingping WU
• 来源期刊: 材料科学与应用(英文)
• 学科: 化学
• 关键词: STRAW biomass carbon activation porous LAMELLAR structure SUPERCAPACITOR
• 年，卷（期）: 2019,（2）
• 页码范围: 27-30
• 页数: 4页
• 分类号: O64

摘要

Biomass straws are often regarding as agricultural waste, usually burned off in rural areas, which results in severe resource waste andair pollution. In this work, biomass-based porous carbon material with a lamellar microstructure is obtained via simple hydrothermaland subsequent KOH activation, the optimum activate process is determined by the proportion of activator. Scanning electronmicroscopy (SEM) and nitrogen adsorption techniques are conducted to investigate the physical properties of the materials. Cyclicvoltammetry and constant current discharge/charge in the three-electrode system and symmetrical double-layer capacitors resultsindicate the best electrochemical performance of SCA-1.5 electrode material, with a capacity of 250.0 F g-1 at 1.0 A g-1. And notably,high recycling stability at a high cycling rate of 1.0 A g-1 after 18,000 cycles.