The preparation of self-assembling organomodified Co/Al-layered double hydroxide(LDH)via one-step route was studied. A common surfactant,sodium dodecylbenzenesulfonate(DBS),was employed as an organic modifier.The beha...The preparation of self-assembling organomodified Co/Al-layered double hydroxide(LDH)via one-step route was studied. A common surfactant,sodium dodecylbenzenesulfonate(DBS),was employed as an organic modifier.The behavior and structure of self-assembled intercalated organic Co/Al-LDH were investigated by FTIR,SEM,WAXS,element analysis and TGA.Based upon the WAXS results and calculation by Bragg equation,the interlayer distance(d value)for organic Co/Al-LDH is enlarged from 0.75 nm to 3.10 nm,showing that the self-assembling behavior has been carried out successfully.Considering the observation from SEM, the product shows the morphology of organic Co/Al-LDH of a layered structure.In addition,FTIR,element analysis and TGA analysis show that the modifier is intercalated into the gallery of the Co/Al-LDH.Since organic modification for nanofiller is deemed to be necessary before applying it into polymer,the successful preparation of organomodified Co/Al-LDH will be significantly beneficial to the preparation and investigation of novel polymer/LDH nanocomposite.展开更多
Owing to the high power density and long-term stability characteristics, supercapacitors （SCs）, also called electrochemical capacitors, have attracted great interests as one of the most efficient electrical energy s...Owing to the high power density and long-term stability characteristics, supercapacitors （SCs）, also called electrochemical capacitors, have attracted great interests as one of the most efficient electrical energy storage devices . According to the charge storage mechanism of the elec- trode, SCs are classified into electric double layer capacitors （EDLC） which store charges via static electrolyte ion adsorption/desorption, and pseudo-capacitors （PSC） which involve a faradaic redox reaction process. PSCs have attracted lots of attention recently because of their advantage of higher energy storage ability than EDLC to meet broader applications . The energy density of a PSC strongly depends on the nature of the electrode material and the material morphology.展开更多
基金Project(50703026)supported by the National Natural Science Foundation of Chinaproject(F/4285-1)supported by International Foundation for Science(IFS)+1 种基金project(20080440182,200902615)supported by China Postdoctoral Science Foundationproject supported by Guest-Scientist Research Fellowship granted by Leibniz Institute of Polymer Research Dresden,Germany
文摘The preparation of self-assembling organomodified Co/Al-layered double hydroxide(LDH)via one-step route was studied. A common surfactant,sodium dodecylbenzenesulfonate(DBS),was employed as an organic modifier.The behavior and structure of self-assembled intercalated organic Co/Al-LDH were investigated by FTIR,SEM,WAXS,element analysis and TGA.Based upon the WAXS results and calculation by Bragg equation,the interlayer distance(d value)for organic Co/Al-LDH is enlarged from 0.75 nm to 3.10 nm,showing that the self-assembling behavior has been carried out successfully.Considering the observation from SEM, the product shows the morphology of organic Co/Al-LDH of a layered structure.In addition,FTIR,element analysis and TGA analysis show that the modifier is intercalated into the gallery of the Co/Al-LDH.Since organic modification for nanofiller is deemed to be necessary before applying it into polymer,the successful preparation of organomodified Co/Al-LDH will be significantly beneficial to the preparation and investigation of novel polymer/LDH nanocomposite.
基金supported by Queensland University of Technology (QUT) for Postgraduate Research Award scholarships (QUTPRA)supported by generous funding from the Science and Engineering Faculty (QUT)
文摘Owing to the high power density and long-term stability characteristics, supercapacitors （SCs）, also called electrochemical capacitors, have attracted great interests as one of the most efficient electrical energy storage devices . According to the charge storage mechanism of the elec- trode, SCs are classified into electric double layer capacitors （EDLC） which store charges via static electrolyte ion adsorption/desorption, and pseudo-capacitors （PSC） which involve a faradaic redox reaction process. PSCs have attracted lots of attention recently because of their advantage of higher energy storage ability than EDLC to meet broader applications . The energy density of a PSC strongly depends on the nature of the electrode material and the material morphology.
