Sugarcane Bagasse-Based Activated Carbons Prepared by Microwave Activation and Its Electrochemical Capacitive Performance

吴小中; 周晋; 邢伟; 禚淑萍

您当前的位置：

首页 >

文章列表页 >

Sugarcane Bagasse-Based Activated Carbons Prepared by Microwave Activation and Its Electrochemical Capacitive Performance

更新时间：2026-09-14

- Sugarcane Bagasse-Based Activated Carbons Prepared by Microwave Activation and Its Electrochemical Capacitive Performance
- 微波活化甘蔗渣合成活性炭及其电化学电容特性
- Vol. 33, Issue 2, Pages: 179-185(2012)
- 作者机构：
  
  山东理工大学化学工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012
- 稿件说明：
移动端阅览
吴小中, 周晋, 邢伟, et al. Sugarcane Bagasse-Based Activated Carbons Prepared by Microwave Activation and Its Electrochemical Capacitive Performance[J]. 2012, 33(2): 179-185.
DOI：

吴小中, 周晋, 邢伟, et al. Sugarcane Bagasse-Based Activated Carbons Prepared by Microwave Activation and Its Electrochemical Capacitive Performance[J]. 2012, 33(2): 179-185. DOI：

摘要

以甘蔗渣为原料

ZnCl2为活化剂

分别采用微波加热活化和管式炉加热活化制备了一系列活性炭材料

并研究了微波活化法制备的活性炭在水或离子液体电解液体系中的电容特性.氮气吸附测试表明:活化剂的浓度与活性炭的孔结构密切相关

加热方式对孔径结构的影响不大

但微波活化法在加热效率和均匀性方面具有明显的优势.当活化剂的浓度从20wt%增大到60wt%时

活性炭的平均孔径从2.5nm逐渐增大到7.0nm.电化学测试表明:在离子液体中炭材料的电容性能与其孔径大小密切相关

孔径尺寸越大

其电容性能越好.离子液体电容器能提供远高于水相电容器的能量密度.AC60在功率密度为2.5kW/kg时

仍能提供9.2Wh/kg的能量密度.

Abstract

Two series of activated carbon materials had been successfully prepared by microwave activation and tube furnace heating treatment

for which sugarcane bagasse and ZnCl2 were used as carbon resource and activating agent respectively.The electrochemical capacitive performance of activated carbon prepared by microwave activation was studied in aqueous and ionic liquid electrolytes.Nitrogen sorption determination shows that the pore structure is closely related to the concentration of activating agent

and the activating method shows rarely effect on the pore structure

while the microwave activation possesses significant advantage in heating efficiency and homogeneity.Structural characterization reveals that the pore size of activated carbons could be tuned from 2.5 nm to 7.0 nm as the concentration of ZnCl2 solution increases from 20 wt% to 60 wt%.As evidenced by electrochemical measurements

the pore size plays a crucial role for the capacitive performance of activated carbons in ionic liquid electrolyte

and the larger the pore size

the better the capacitance.Ionic liquid supercapacitor could deliver much higher energy density than aqueous supercapacitor.AC60 could deliver 9.2 Wh/kg of energy density while maintaining 2.5 kW/kg of power density.

关键词

Keywords

references

Conway B E.Electrochemical Supercapacitors:Scientific Fundamentals and Technological applications[M].New York:Plenum,1999.

Xing W,Qiao S Z,Ding R G,et al.Superior electric double layer capacitors using ordered mesoporous carbons[J].Carbon,2006,44:216-24.

Xing W,Huang C C.Hierarchical porous carbons with high performance for supercapacitor electrodes[J].Carbon,2009,47:1715-1722.

Zhang C,Long D,Xing B,et al.The superior electrochemical performance of oxygen-rich activated carbons prepared from bituminous coal[J].Electrochem.Commun.,2008,10:1809-1811.

Gryglewicz G,Machnikowski J,Lorenc-Grabowska E,et al.Effect of pore size distribution of coal-based activated carbonson double layer capacitance[J].Electrochim.Acta,2005,50:1197-1206.

Ruiz V,Blanco C,Santamaría R,et al.An activated carbon monolith as an electrode material for supercapacitors[J].Carbon,2009,47:195-200.

Jurewicz K,Pietrzak R,Nowicki P,et al.Ca-pacitance behaviour of brown coal based active carbon modified through chemical reaction with urea[J].Electrochim.Acta,2008,53:5469-5475.

王娟.微波活化制备麻疯树果壳活性炭研究[J].环境科学与技术,2009,32(6):69-71.Wang Juan.Preparation of activated carbon with barbadosnut shell by microwave[J].Environmental Science&Technology,2009,32(6):69-71.(in Chinese)

张利波.微波加热制备烟杆基高比面积活性炭的研究[J].武汉理工大学学报,2008,30(12):76-79.Zhang Libo.Research on preparation of high specific surface area activated carbon from tobacco stem by microwave heating[J].J.Wuhan University of Technology,2008,30(12):76-79.(in Chinese)

Xu B,Wu F.Highly mesoporous and high surface area carbon:A high capacitance electrode material for EDLCs with various electrolytes[J].Electrochem.Commun.,2008,10:795-797.

Macdonald D D.Reflections on the history of electrochemical impedance spectroscopy[J].Electrochim.Acta,2006,51:1376-1388.

Lewandowski A.Practical and theoretical limits for electrochemical double-layer capacitors[J].J.Power Sources,2007,173:822-828.

Views

295

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

煤种和活化程度对蜂窝活性炭孔隙结构和机械强度的影响

炭化温度对蜂窝活性炭孔结构和强度的影响

Hopkinson Bar Pulse Width Extension Test Method Based on Polyurethane Wave Shaper

Study on the Removal of CO2 in Confined Space by High⁃Gravity Enhanced Potassium Hydroxide Coupled Potassium Glycinate Solution

A Shock Wave Testing System for High⁃Altitude Explosion Experiments

Related Author

柳来栓

黄张根

张晓航

吴秉衡

柳来栓

刘振宇

Related Institution

中北大学化工与环境学院

中国科学院山西煤炭化学研究所煤转化国家重点实验室

北京化工大学化工资源有效利用国家重点实验室

⁰