Ordered Mesoporous Carbon Nano Spheres as Electrode Material for Supercapacitors

2013 ◽  
Vol 320 ◽  
pp. 661-664
Author(s):  
Hai Jing Zhao ◽  
Dong Lin Zhao ◽  
Ji Ming Zhang ◽  
Dong Dong Zhang
Keyword(s):  
Mesoporous Carbon ◽  
Electrode Materials ◽  
Rate Capability ◽  
Nitrogen Adsorption ◽  
Ordered Mesoporous Carbon ◽  
Electrochemical Performances ◽  
Carbon Nanospheres ◽  
Electrochemical Testing ◽  
Ordered Mesoporous ◽  
Coating Method

Ordered mesoporous carbon nanospheres with uniformly penetrating channels have been successfully synthesized by a nanocasting method using mesoporous silica as a template. The ordered mesoporous carbon nanospheres were investigated as electrode materials for supercapacitors via high-resolution transmission electron microscopy, nitrogen adsorption and desorption isotherms and a variety of electrochemical testing techniques. The electrodes with ordered mesoporous carbon nanospheres prepared by coating method exhibited good rate capability and reversibility at high scan rates in electrochemical performances. Ordered mesoporous carbon nanosphere electrode with specific surface area of 904 m2/g maintained a stable specific capacitance of 210 F g-1under specific current of 0.1 A g-1for 500 cycles of charge/discharge.

Electrochemical Performance of Graphene Nanosheets as Electrode Material for Supercapacitors

2013 ◽  
Vol 873 ◽  
pp. 581-586
Author(s):  
Liang Yu Li ◽  
Dong Lin Zhao ◽  
Dong Dong Zhang
Keyword(s):  
Electrochemical Performance ◽  
Electrode Materials ◽  
Graphene Nanosheets ◽  
Rate Capability ◽  
Nitrogen Adsorption ◽  
Rapid Expansion ◽  
Electrochemical Performances ◽  
Electrochemical Testing ◽  
Transmission Electron ◽  
Coating Method

Graphene nanosheets (GNSs) were prepared from flake natural graphite by oxidation, rapid expansion and ultrasonic treatment. The morphology, structure and electrochemical performance of GNSs as electrode materials for supercapacitors were systematically investigated via high-resolution transmission electron microscopy, X-ray diffraction, nitrogen adsorption and desorption isotherms and a variety of electrochemical testing techniques. The electrodes with freestanding GNSs prepared by coating method exhibited good rate capability and reversibility at high scan rates in electrochemical performances. GNS electrode with specific surface area of 243 m2 g1 maintained a stable specific capacitance of 200 F g1 under specific current of 0.1 A g1 for 500 cycles of charge/discharge.

Ruthenium oxide coated ordered mesoporous carbon nanofiber arrays: a highly bifunctional oxygen electrocatalyst for rechargeable Zn–air batteries

2016 ◽  
Vol 4 (17) ◽  
pp. 6282-6289 ◽  
Author(s):  
Ziyang Guo ◽  
Chao Li ◽  
Wangyu Li ◽  
Hua Guo ◽  
Xiuli Su ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Carbon Nanofiber ◽  
Rate Capability ◽  
Ruthenium Oxide ◽  
Ordered Mesoporous Carbon ◽  
Cycle Life ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Ordered Mesoporous

Zn–air batteries with a RuO2-coated MCNA catalyst display relatively low overpotentials, long cycle life and superior rate capability.

ELECTROCHEMICAL PERFORMANCE OF ORDERED MESOPOROUS CARBON MODIFIED BY OXIDATIVE TREATMENT WITH AQUEOUS NITRIC ACID

2016 ◽  
Vol 78 (3-2) ◽  
Author(s):  
Nur Izzatie Hannah Razman ◽  
Salasiah Endud ◽  
Izan Izwan Misnon ◽  
Zainab Ramli
Keyword(s):  
Electron Microscopy ◽  
Nitric Acid ◽  
Electrochemical Performance ◽  
Mesoporous Carbon ◽  
Nitrogen Adsorption ◽  
Ordered Mesoporous Carbon ◽  
Replication Process ◽  
Oxidative Treatment ◽  
Ordered Mesoporous ◽  
Aqueous Nitric Acid

In this study, ordered mesoporous carbon (OMC) was prepared via nano-casting method by using Santa Barbara Amorphous (SBA)-15 as a template and sucrose as a carbon precursor. The OMC was subsequently oxidized with aqueous nitric acid and referred as MOMC. The physicochemical properties of OMC and MOMC were determined using nitrogen adsorption–desorption analyser, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR). The results proved that the carbon replication process was successful. The electrochemical performance tests were carried out using cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) in 1 M KOH electrolyte for 1000 cycles. After oxidative treatment, the specific surface area and pore volume of OMC decreased but the specific capacitance of the electrode material has significantly increased from 117      F g–1 to 344 F g–1 at a scan rate of 10 mV s–1.   

Novel S-doped ordered mesoporous carbon nanospheres toward advanced lithium metal anodes

Nano Energy ◽  
2020 ◽  
Vol 69 ◽  
pp. 104443 ◽  
Author(s):  
Fei Zhang ◽  
Xiaoyan Liu ◽  
Menghua Yang ◽  
Xiaoqing Cao ◽  
Xingyu Huang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Lithium Metal ◽  
Carbon Nanospheres ◽  
Ordered Mesoporous ◽  
Lithium Metal Anodes ◽  
Metal Anodes

Ordered mesoporous carbon in solid-phase microextraction for analysis of volatile organic compounds in water samples

2019 ◽  
Vol 11 (29) ◽  
pp. 3741-3749
Author(s):  
Bo Liu ◽  
Yaqiong Hao ◽  
Lixiao Wang ◽  
Mengyun Li ◽  
Hui Jiang
Keyword(s):  
Self Assembly ◽  
Mesoporous Carbon ◽  
Solid Phase ◽  
Dip Coating ◽  
Ordered Mesoporous Carbon ◽  
Ordered Mesoporous ◽  
Volatile Organic ◽  
Coating Method ◽  
Evaporation Induced Self Assembly ◽  
Dip Coating Method

An ordered mesoporous carbon (OMC) film supported on graphite fiber was prepared by a dip-coating method combined with a solvent evaporation induced self-assembly (EISA) strategy.

Active Nanointerface‐Assisted Co‐Assembly to Yolk–Shell Au@Ordered Mesoporous Carbon Nanospheres

2019 ◽  
Vol 7 (2) ◽  
pp. 1901703
Author(s):  
Weicai Zhang ◽  
Jing Peng ◽  
Mingtao Zheng ◽  
Hanwu Dong ◽  
Hang Hu ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Carbon Nanospheres ◽  
Ordered Mesoporous

Synthesis of Sodium-vanadate-doped Ordered Mesoporous Carbon Foams as Capacitor Electrode Materials

2011 ◽  
Vol 40 (3) ◽  
pp. 236-238 ◽  
Author(s):  
Yaokang Lv ◽  
Mingxian Liu ◽  
Lihua Gan ◽  
YongJie Cao ◽  
Liuhua Chen ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Electrode Materials ◽  
Ordered Mesoporous Carbon ◽  
Sodium Vanadate ◽  
Ordered Mesoporous ◽  
Carbon Foams

High Efficient Photoreduction CO2 with H2O on Metal Cu-Modified Graphitic Ordered Mesoporous Carbon Supported TiO2 Catalysts under Simulated Solar

2014 ◽  
Vol 906 ◽  
pp. 39-44
Author(s):  
Cheng Li Zhang ◽  
Shi Fei Kang ◽  
Qian Yu Zhang ◽  
Xi Li
Keyword(s):  
Electron Microscopy ◽  
Mesoporous Carbon ◽  
Nitrogen Adsorption ◽  
High Specific Surface Area ◽  
Ordered Mesoporous Carbon ◽  
Solar Irradiation ◽  
Transmission Electron Microscopy Analysis ◽  
Ordered Mesoporous ◽  
High Efficient ◽  
Electron Microscopy Analysis

Cu-modified graphitic ordered mesoporous carbon supported TiO2 catalyst was synthesized based on a hard template method. X-ray diffraction, nitrogen adsorption-desorption, scanning electron microscopy and transmission electron microscopy analysis techinques were used to characterize the sample. It was observed that copper and anatase TiO2 nanoparticles were well dispersed in the Cu-modified mesoporous graphitic carbon, and the resulting composite with ordered mesostructure and high specific surface area exhibited an exceptionally high activity in the photocatalytic reduction of CO2 with H2O under simulated solar irradiation.

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