Results 31 to 40 of about 345,673 (301)

Research progress on porous carbon materials [PDF]

open access: yesSCIENTIA SINICA Chimica, 2019
Porous carbon materials (PCMs) hold great promise in the fields of energy generation/conversion and environmental remediation due to their high specific surface areas, tunable physicochemical properties and cost-effective scaled-up production. The synthetic strategies and the structures of their precursors significantly affect the final performance and
Tongzhou Wang, Hong Wang
openaire   +1 more source

Transition-metal-based electrocatalysts for hydrazine-assisted hydrogen production

open access: yesMaterials Today Advances, 2020
Electrocatalytic water splitting is considered as the next-generation strategy for large-scale ultrapure hydrogen production. However, the high thermodynamic potential (1.23 V vs.
H. Liu, Y. Liu, M. Li, X. Liu, J. Luo
doaj   +1 more source

Complex Organic Materials in the HR 4796A Disk? [PDF]

open access: yes, 2008
The red spectral shape of the visible to near infrared reflectance spectrum of the sharply-edged ring-like disk around the young main sequence star HR 4796A was recently interpreted as the presence of tholin-like complex organic materials which are seen ...
Aigen Li   +26 more
core   +2 more sources

Development of Porous Carbon Material "Woodceramics". III. Development of Porous Carbon Material "Woodceramics". Frictional Properties.

open access: yesJournal of the Society of Materials Science, Japan, 1995
Woodceramics are the porous carbon materials obtained from wood or woody materials impregnated with phenol formaldehyde resin and sintered in a vacuum furnace. The purpose of this paper is to analyze fundamental friction properties of woodceramics in sliding with several materials. A reciprocating friction apparatus was used in the experiments.
Kazuo HOKKIRIGAWA   +2 more
openaire   +2 more sources

Spark plasma sintered carbon electrodes for electrical double layer capacitor applications [PDF]

open access: yes, 2011
The spark plasma sintering (SPS) is an emerging process for shaping any type of materials (metals, ceramic, polymers and their composites). The advantage of such a process is to prepare densified ceramic materials in a very short time, while keeping the ...
Chevallier, Geoffroy   +3 more
core   +2 more sources

The Mechanical Effect of MnO2 Layers on Electrochemical Actuation Performance of Nanoporous Gold

open access: yesNanomaterials, 2020
This study investigated the electrochemical actuation behavior of nanoporous material during the capacitive process. The length change of nanoporous gold (npg) was in situ investigated in a liquid environment using the dilatometry technique.
Zhifei Han   +4 more
doaj   +1 more source

Review on porous carbon materials engineered by ZnO templates: Design, synthesis and capacitance performance

open access: yesMaterials & Design, 2021
Supercapacitors (SCs), with favorable features including excellent stability, superior rate performance, and ultrahigh power densities, offer a cost-effective avenue for energy storage. Electrode materials play a decisive role in SCs.
Bing Yan   +6 more
doaj   +1 more source

Complex Pt/Al2O3 materials for small catalytic systems [PDF]

open access: yes, 2007
This paper reports on the preparation of catalytic materials composed of a porous metallic preform containing winding microchannels whose surface is coated by a complex catalytic film. Al2O3 is deposited inside the pores by means of wet impregnation in a
Alphonse, Pierre   +4 more
core   +3 more sources

Biomass-derived carbon materials for energy storage applications [PDF]

open access: yes, 2021
Energy storage systems are an essential link in the implementation of renewable energies and in the development of electric vehicles, which are needed to reduce our dependence on fossil fuels and the emission of greenhouse gases.
Gómez Martín, Aurora
core  

Porous Carbon Materials in Biomedical Applications [PDF]

open access: yesBiomedical Journal of Scientific & Technical Research, 2019
Porous carbon materials (PCM) can be classified depending on the size of the pores as microporous < 2nm, mesoporous 2-50nm and macroporous > 50nm.
openaire   +1 more source

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