高等学校化学学报2024，Vol.45Issue(4)：143-151,9.DOI:10.7503/cjcu20240012
以稻壳热解炭制备镧负载多孔炭复合电极材料
Lanthanum-supported Porous Carbon Composite Electrode Material Prepared by Rice Husk Char
摘要
Abstract
In this paper,a high value-added utilization method of rice husk char was proposed to prepare lanthanum-supported porous carbon composite electrode materials(La/PCs).A series of La/PCs were prepared via in situ activation/loading method.The effects of calcination temperature and impregnation ratio on the adsorption and electro-chemical properties of La/PCs were investigated.X-Ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),scanning electron microscope-energy dispersive spectrometer(SEM-EDS)and Brunauer-Emmett-Teller surface area(BET)were used to study the metal structure,valence state,element compositions and surface morphology of those La/PCs.It was analyzed that the possible relationship between pore structure and capacitance value.As a result,the La/PC_900/10 exhibited high gravimetric capacitance of 269.45 F/g in 6 mol/L KOH electrolyte.At 0.5 A/g,the assembled symmetric supercapacitor presented a superior gravimetric energy density of 23.45 W·h/kg at 0.70 kW/kg and the capacitance retention rate was 86.41%after 5000 cycles.The favorable capacitive behavior of La/PC_900/10 demonstrated its potential as carbon-based electrode applied in high performance supercapacitors.This paper provides a feasible path for the utilization of rice husk char and the application of lanthanum in the field of new energy materials.关键词
稻壳热解炭/镧负载多孔炭/复合电极Key words
Rice husk char/Lanthanum-supported porous carbon/Composite electrode分类
化学化工引用本文复制引用
隋光辉,程岩岩..以稻壳热解炭制备镧负载多孔炭复合电极材料[J].高等学校化学学报,2024,45(4):143-151,9.基金项目
南昌师范学院博士科研启动基金(批准号:NSBSJJ2019003,NSBSJJ2019005)和南昌师范学院校级科技项目(批准号:23XJZR02)资助. Supported by the Doctoral Research Start-up Funding of Nanchang Normal University,China(Nos.NSBSJJ2019003,NSBSJJ2019005)and the Science and Technology Project of Nanchang Normal University,China(No.23XJZR02). （批准号:NSBSJJ2019003,NSBSJJ2019005）
