Supercapacitive behavior depending on the mesopore size of three-dimensional micro-, meso- and macroporous silicon carbide for supercapacitors

2015 ◽  
Vol 17 (6) ◽  
pp. 4424-4433 ◽  
Author(s):  
Myeongjin Kim ◽  
Ilgeun Oh ◽  
Jooheon Kim
Keyword(s):  
Silicon Carbide ◽  
Porous Structure ◽  
Synthesis Method ◽  
Three Dimensional ◽  
Macroporous Silicon ◽  
Facile Synthesis ◽  
Capacitive Performance ◽  
Structure And Morphology

A facile synthesis method is developed to prepare the three-dimensional micro-, meso- and macroporous silicon carbide spheres that exhibit a unique porous structure and morphology, resulting in high super-capacitive performance.

Design and Synthesis of Metal Oxides Doped Three-Dimensional Order Macroporous Materials Based on SiO2 Matrixes and their Photocatalytic Property

2013 ◽  
Vol 807-809 ◽  
pp. 553-556
Author(s):  
Wei Qiang Fan ◽  
Hong Ye Bai ◽  
Wei Dong Shi
Keyword(s):  
Methylene Blue ◽  
Methyl Methacrylate ◽  
Metal Oxides ◽  
Porous Structure ◽  
Photocatalytic Performance ◽  
Three Dimensional ◽  
Photocatalytic Property ◽  
Design And Synthesis ◽  
Structure And Morphology ◽  
Macroporous Materials

Three-dimensional (3D) ordered SiO2 macroporous materials doped with metal oxides (M = Co, Fe, Ni, and Sn) were synthesized respectively, using poly (methyl methacrylate) (PMMA) spheres as templates. The porous structure and morphology of samples has been characterized by TEM images. Further investigation of the photocatalytic degradation of methylene blue in the presence of H2O2, the observed photocatalytic performance of the samples was attributed to the effects of the metal oxides and porosity.

Phytic acid-assisted electrochemically synthesized three-dimensional O, P-functionalized graphene monoliths with high capacitive performance

Nanoscale ◽  
2017 ◽  
Vol 9 (34) ◽  
pp. 12601-12608 ◽  
Author(s):  
Han-Yu Li ◽  
Lang Liu ◽  
Zhi-Wei Zhang ◽  
Shu-Shen Wang ◽  
Yao Yu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Energy Storage ◽  
Mechanical Strength ◽  
Porous Structure ◽  
Phytic Acid ◽  
Three Dimensional ◽  
Energy Storage Materials ◽  
Functionalized Graphene ◽  
Characteristic P ◽  
Capacitive Performance

Three-dimensional functionalized graphene monoliths (3DFGMs) have attracted intensive attention as energy storage materials due to their unique interconnected porous structure, good electrical conductivity, excellent mechanical strength, and pseudocapacitive characteristic.

scholarly journals Facile synthesis of porous Mo 2 C/C composites by using luffa sponge-derived carbon template in molten salt media

2019 ◽  
Vol 6 (6) ◽  
pp. 190547
Author(s):  
Minzhong Huang ◽  
Wanyi Zeng ◽  
Ziwen Zhu
Keyword(s):  
Specific Surface ◽  
Porous Structure ◽  
Molten Salt ◽  
Surface Area ◽  
Three Dimensional ◽  
Ammonium Molybdate ◽  
Facile Synthesis ◽  
Carbon Template ◽  
New Type ◽  
Luffa Sponge

Herein, we report the synthesis of a new type of porous Mo 2 C/C composite by using luffa sponge-derived carbon template and ammonium molybdate ((NH 4 ) 6 Mo 7 O 24 •4H 2 O) in molten NaCl–KCl salt media. The product exhibits a higher specific surface area and three-dimensional porous structure, including macrochannels, micropores and mesopores. The desirable porous structure results from the carbon template structure and Mo 2 C coating formed.

Biotemplated facile synthesis of three‐dimensional micro/nanoporous tin oxide: improving the flammable and mechanical properties of flexible PVC

2019 ◽  
Vol 14 (8) ◽  
pp. 828-830 ◽  
Author(s):  
Weihua Meng ◽  
Weihong Wu ◽  
Weiwei Zhang ◽  
Luyao Cheng ◽  
Yunhong Jiao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tin Oxide ◽  
Three Dimensional ◽  
Facile Synthesis

scholarly journals Three-dimensional tellurium and nitrogen Co-doped mesoporous carbons for high performance supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8628-8635
Author(s):  
Chang Ki Kim ◽  
Jung-Min Ji ◽  
M. Aftabuzzaman ◽  
Hwan Kyu Kim
Keyword(s):  
High Performance ◽  
Carbon Materials ◽  
Synergetic Effect ◽  
Three Dimensional ◽  
Mesoporous Carbons ◽  
Capacitive Performance ◽  
Nitrogen Doped ◽  
Carbon Based Nanomaterials ◽  
Nitrogen Doped Carbon ◽  
Co Doped

The incorporation of the Te element into nitrogen-doped carbon-based nanomaterials is a good strategy to improve the capacitive performance of carbon materials and the incorporation of two types of atoms improves the overall capacitive performance of the materials due to a synergetic effect.

scholarly journals Hydrothermal Synthesis and Structural Investigation of a Crystalline Uranyl Borosilicate

Inorganics ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 25
Author(s):  
Kristen A. Pace ◽  
Vladislav V. Klepov ◽  
Mark D. Smith ◽  
Travis Williams ◽  
Gregory Morrison ◽  
...  
Keyword(s):  
Synthesis Method ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Exploratory Research ◽  
The Novel ◽  
Orthorhombic Space Group ◽  
Crystalline Materials ◽  
Waste Remediation ◽  
And Storage ◽  
X Ray Absorption

The relevance of multidimensional and porous crystalline materials to nuclear waste remediation and storage applications has motivated exploratory research focused on materials discovery of compounds, such as actinide mixed-oxoanion phases, which exhibit rich structural chemistry. The novel phase K1.8Na1.2[(UO2)BSi4O12] has been synthesized using hydrothermal methods, representing the first example of a uranyl borosilicate. The three-dimensional structure crystallizes in the orthorhombic space group Cmce with lattice parameters a = 15.5471(19) Å, b = 14.3403(17) Å, c = 11.7315(15) Å, and V = 2615.5(6) Å3, and is composed of UO6 octahedra linked by [BSi4O12]5− chains to form a [(UO2)BSi4O12]3− framework. The synthesis method, structure, results of Raman, IR, and X-ray absorption spectroscopy, and thermal stability are discussed.

scholarly journals Facile Synthesis of Sponge-Like Porous Nano Carbon-Coated Silicon Anode with Tunable Pore Structure for High-Stability Lithium-Ion Batteries

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3211
Author(s):  
Shugui Song ◽  
Jingcang Li ◽  
Anqi Zheng ◽  
Yongqiang Yang ◽  
Kuibo Yin
Keyword(s):  
Porous Structure ◽  
Pore Structure ◽  
High Stability ◽  
Cycling Stability ◽  
Silicon Anode ◽  
Slow Heating ◽  
Facile Synthesis ◽  
Silicon Anodes ◽  
Carbon Coated ◽  
Nano Carbon

To address the challenge of the huge volume expansion of silicon anode, carbon-coated silicon has been developed as an effective design strategy due to the improved conductivity and stable electrochemical interface. However, although carbon-coated silicon anodes exhibit improved cycling stability, the complex synthesis methods and uncontrollable structure adjustment still make the carbon-coated silicon anodes hard to popularize in practical application. Herein, we propose a facile method to fabricate sponge-like porous nano carbon-coated silicon (sCCSi) with a tunable pore structure. Through the strategy of adding water into precursor solution combined with a slow heating rate of pre-oxidation, a sponge-like porous structure can be formed. Furthermore, the porous structure can be controlled through stirring temperature and oscillation methods. Owing to the inherent material properties and the sponge-like porous structure, sCCSi shows high conductivity, high specific surface area, and stable chemical bonding. As a result, the sCCSi with normal and excessive silicon-to-carbon ratios all exhibit excellent cycling stability, with 70.6% and 70.2% capacity retentions after 300 cycles at 500 mA g−1, respectively. Furthermore, the enhanced buffering effect on pressure between silicon nanoparticles and carbon material due to the sponge-like porous structure in sCCSi is further revealed through mechanical simulation. Considering the facile synthesis method, flexible regulation of porous structure, and high cycling stability, the design of the sCCSi paves a way for the synthesis of high-stability carbon-coated silicon anodes.

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