Highly Developed Porous Carbon from Amphiphilic Carbonaceous Material Under Low KOH Ratio and Its Application for EDLCS
Amphiphilic carbonaceous material(ACM)dispersed in nanoscale in alkaline aqueous solutions was synthesized from coal tar pitch.The structure and surface properties of such samples were then characterized by X-ray diffraction(XRD),Fourier transform infrared spectrometer(FTIR),and X-ray photoelectron spectroscopy (XPS),respectively.It was shown that ACM is a kind of special precursor which has plenty of functional groups,widened d002,and is of small particle size simultaneously.Therefore,ACM could guarantee subsequent ACM-based activated carbons,(AACs)notable SUrface properties,that is high specific surface area of 2380 m2 g-1 as well as well-developed mesoporous structure although a low ratio of KOH/ACM(1:1)was employed.In particular,a sample named AAC-3 whose total pore volume is 1.86 cm3 g-1 and mesopore proportion is up to 38％gives sample AAC outstanding electrochemical performances during a series of tests including galvanostatic charge/discharge and CV.The specific capacitance of AAC-3 is 289.5 F g-1 and still maintains 92％of its original capacity after 900 recycles.
Amphiphilic carbonaceous material Activated carbon Microporosity Electrochemical properties
Jiuzhou Wang Chengyang Wang Mingming Chen Jin Wang(王瑨)
Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering
国内会议
天津
英文
130-134
2011-08-19（万方平台首次上网日期，不代表论文的发表时间）