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| 1 | Partially graphitic micro- and mesoporous carbon microspheres for supercapacitors显示文摘Partially graphitic micro-and mesoporous carbon microspheres(GMMCMs)were synthesized using hydrothermal emulsion polymerization followed by KOH activation and catalytic graphitization.The resulting GMMCMs show micro-and mesopores with a specifc surface area of 1113 m2/g,regular spherical shape with diameters of 0.5–1.0 mm and a partially graphitic structure with a low internal resistance of 0.34 V.The graphitic carbons as electrode for supercapacitor exhibit a fast ion-transport and rapid charge–discharge feature,and a high-rate electrochemical performance.The typical GMMCM electrode shows a specifc capacitance of 220 F/g at 1.0 A/g,and 185 F/g under a high current density of20.0 A/g in a 6 mol/L KOH electrolyte. | Ming-Xian Liu Li-Hua Gan Wei Xiong Da-Zhang Zhu Zi-Jie Xu Long-Wu Chen | 2013 | Chinese Chemical Letters2013，24，12： | 8 |
| 2 | Improving the performance of all-solid-state supercapacitors by modifying ionic liquid gel electrolytes with graphene nanosheets prepared by arc-discharge显示文摘Ionic liquid gel polymers have widely been used as the electrolytes in all-solid-state supercapacitors,but they suffer from low ionic conductivity and poor electrochemical performance.Arc discharge is a fast,low-cost and scalable method to prepare multi-layered graphene nanosheets,and as-made graphene nanosheets(denoted as ad-GNSs) with few defects,high electrical conductivity and high thermal stability should be favorable conductive additive materials.Here,a novel ionic liquid gel polymer electrolyte based on an ionic liquid(EMIMNTF_2) and an copolymer(P(VDF-HFP)) was modified by the addition of ad-GNSs as an ionic conducting promoter.This modified gel electrolyte shows excellent thermal stability up to 400℃ and a wide electrochemical window of 3 V.An all-solid-state supercapacitor based on commercial activated carbon was fabricated using this modified ionic liquid gel polymer electrolyte,which shows obviously improved electrochemical behaviors compared with those of the corresponding all-solid-state supercapacitor using pure ionic liquid gel polymer electrolyte.Specially,smaller internal resistance,higher specific capacitance,better rate performance and cycling stability are achieved.These results indicate that the ionic liquid gel polymers modified by ad-GNSs would be promising and suitable gel electrolytes for high performance all-solid-state electrochemical devices. | Min-Jie Shi Sheng-Zhong Kou Bao-Shou Shen Jun-Wei Lang Zhi Yang Xing-Bin Yan | 2014 | Chinese Chemical Letters2014，25，6： | 4 |
| 3 | Synthesis and electrochemical performance of hierarchical porous carbons with 3D open-cell structure based on nanosilica-embedded emulsion-templated polymerization显示文摘A novel synthesis of hierarchical porous carbons(HPCs) with 3D open-cell structure based on nanosilicaembedded emulsion-templated polymerization was reported.An oil-in-water emulsion containing SiO_2colloids was fabricated using liquid paraffin as an oil phase,resorcinol/formaldehyde and silica sol as an aqueous phase,and Span 80/Tween 80 as emulsifiers.HPCs with macropore cores,open meso/macropore windows,and abundant micropores were synthesized by the polymerization and carbonization of the emulsion,followed by scaffold removal and further KOH activation.A typical HPCs sample as supercapacitor electrode shows the charge/discharge capability under large loading current density(30 A/g) coupling with a reasonable electrochemical capacitance in KOH electrolyte solution. | Ming-Xian Liu Li-Hua Gan Yang Li Da-Zhang Zhu Zi-Jie Xu Long-Wu Chen | 2014 | Chinese Chemical Letters2014，25，6： | 4 |
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