Synthesis of mesoporous carbons of high surface area and porosity by using polymer blends as template

Lin, Yu; Wu, Shyi-Kuen; Liu, Che Wei; Lim, Zheng Yi; Huang, Cheng; Lin, Hong Ping; Deng, Shiensen; Yang, Ming; Tang, Chengzhou; Lin, Ching Yen

doi:10.1007/s10008-007-0434-x

Cited by 3 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that the presence of mesopores among the carbons is helpful for fast mass transport of ions at high charging rates. − Figure a shows cyclic voltammograms of the conventional two-electrode cell assembled with the hierarchical micro/mesoporous carbon (C7) with the surface area of 1537 m 2 g –1 . The cells behave similar to an ideal double-layer capacitor with an almost symmetric and rectangular shape at various potential scan rates.…”

Section: Resultsmentioning

confidence: 99%

Hierarchical Micro/Mesoporous Carbons Synthesized with a ZnO Template and Petroleum Pitch via a Solvent-Free Process for a High-Performance Supercapacitor

et al. 2017

Self Cite

View full text Add to dashboard Cite

Hierarchical micro/mesoporous carbons were prepared using ZnO nanoparticles as hard templates and a petroleum industrial-residual pitch as the carbon source via a solvent-free process. The ZnO templates can be easily removed using HCl(aq), thereby avoiding limitations present in conventional porous silica templating approaches that require highly corrosive HF(aq) for template removal. Notably, the proposed solvent-free synthetic method from low-cost pitch to high-value porous carbons is a friendly process with respect to our overexploited environment. With the combination of ZnO nanoparticles and pitch, the surface area (76–548 m 2 g –1 ) of the resultant mesoporous carbons increases with an increase in the weight ratios of ZnO to pitch. Furthermore, the hierarchical micro/mesoporous carbons with a large surface area (854–1979 m 2 g –1 ) can be feasibly fabricated by only adding an appropriate amount of an activating agent. Meanwhile, N-doped hierarchical porous carbons can be achieved by carbonizing the blend of these materials with melamine. For supercapacitor application, the resultant carbons exhibit a high capacitance up to 200.5 F g –1 at 5 mV s –1 using LiClO 4 /PC as the electrolyte in a symmetrical two-electrode cell. More importantly, the coin-cell supercapacitor based on porous carbons achieved a capacitance of 94 F g –1 at 5 mV s –1 and 63% capacitance retention at 500 mV s –1 , thereby holding the potential for commercialization.

show abstract

Section: Resultsmentioning

confidence: 99%

Hierarchical Micro/Mesoporous Carbons Synthesized with a ZnO Template and Petroleum Pitch via a Solvent-Free Process for a High-Performance Supercapacitor

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…The spherical shape of microparticles offers the simplest path toward solution-processable materials. The hollow spherical microparticles possess the advantage of carrying materials inside the cavity, which is valuable for drug delivery in combination with biocompatibility. , Hollow sphere micromorphology is beneficial for energy applications due to the better accessibility of structured material, ensuring faster charge/discharge kinetics and higher capacitance. − The most commonly used method includes the formation of shells of the conducting polymer on template beads, followed by selective dissolution of the template. This approach has been applied for polyaniline, polypyrrole (PPy), − and poly(3,4-ethylenedioxythiophene) .…”

Section: Introductionmentioning

confidence: 99%

Pure Nanoscale Morphology Effect Enhancing the Energy Storage Characteristics of Processable Hierarchical Polypyrrole

et al. 2015

View full text Add to dashboard Cite

We report a new synthesis approach for the precise control of wall morphologies of colloidal polypyrrole microparticles (PPyMPs) based on a time-dependent template-assisted polymerization technique. The resulting PPyMPs are water processable, allowing the simple and direct fabrication of multilevel hierarchical PPyMPs films for energy storage via a self-assembly process, whereas convention methods creating hierarchical conducting films based on electrochemical polymerization are complicated and tedious. This approach allows the rational design and fabrication of PPyMPs with well-defined size and tunable wall morphology, while the chemical composition, zeta potential, and microdiameter of the PPyMPs are well characterized. By precisely controlling the wall morphology of the PPyMPs, we observed a pure nanoscale morphological effect of the materials on the energy storage performance. We demonstrated by controlling purely the wall morphology of PPyMPs to around 100 nm (i.e., thin-walled PPyMPs) that the thin-walled PPyMPs exhibit typical supercapacitor characteristics with a significant enhancement of charge storage performance of up to 290% compared to that of thick-walled PPyMPs confirmed by cyclic voltametry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. We envision that the present design concept could be extended to different conducting polymers as well as other functional organic and inorganic dopants, which provides an innovative model for future study and understanding of the complex physicochemical phenomena of energy-related materials.

show abstract

Charge storage performance of doped carbons prepared from polyaniline for supercapacitors

Liu

Shen

et al. 2010

J Solid State Electrochem

View full text Add to dashboard Cite

Synthesis of mesoporous carbons of high surface area and porosity by using polymer blends as template

Cited by 3 publications

References 15 publications

Hierarchical Micro/Mesoporous Carbons Synthesized with a ZnO Template and Petroleum Pitch via a Solvent-Free Process for a High-Performance Supercapacitor

Hierarchical Micro/Mesoporous Carbons Synthesized with a ZnO Template and Petroleum Pitch via a Solvent-Free Process for a High-Performance Supercapacitor

Pure Nanoscale Morphology Effect Enhancing the Energy Storage Characteristics of Processable Hierarchical Polypyrrole

Charge storage performance of doped carbons prepared from polyaniline for supercapacitors

Contact Info

Product

Resources

About