SELF-TEMPLATING MELALEUCA BARK BASED POROUS CARBONS FOR SUPERCAPACITORS
With the increasing depletion of mineral resources,developing biomass-derived carbons has become a highly attractive subject from the viewpoint of sustainable development and environmental friendliness.In this work,we present a facile and efficient approach to synthesize self-templating carbon-based materials via a two-step carbonization process with melaleuca bark as the biomass precursor.The effect of varied pyrolysis temperature(650,750,850℃)and KOH/precursor weight ratio(1:1 to 3:1)on the textural properties and surface chemistry of KOH-activated carbons was examined.Typical porous carbons were obtained from the waste biomass and characterized by XRD,SEM,TEM,FTIR,XPS and N2-sorption.Samples with tunable morphologies and texture were obtained by controlling synthesis reaction parameters.The resulting carbon materials have high surface areas(1238.5-2108.2 m2/g)and pore volumes(0.59-0.91 cm3/g),and MB-based carbon materials(MBC)synthesized at 3:1 ratio of KOH,750℃ possesses a highest BET surface area.On the basis of outstanding capacitive performance(298 F·g-1 at 1A·g-1),good rate capacitive behavior,and excellentcycling stability(99%of capacitance retention after10,000 cycles)in 6 M KOH electolyte,these porous carbon are expected to be an ideal material for supercapacitors.We believe the presented approach represents a sustainable platform towards the rational design of carbon materials and the efficient utilization of biomass resources.
Manman Xu Quanbo Huang Xiaohui Wang Runcang Sun
State Kay Laboratory of Pulp and Paper Engineering,South China University of Technology Guangzhou,51 State Kay Laboratory of Pulp and Paper Engineering,South China University of Technology Guangzhou,51
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-6
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）