Results 31 to 40 of about 47,854 (245)

The Production of Large Artificial Graphite Crystals [PDF]

open access: yesPhysical Review, 1932
There are two problems brought into the focus of interest very recently which seem to make it desirable to obtain single crystals of several cm^3 size free from occlusions and chemical impurities.
Goetz, Alexander   +2 more
openaire   +2 more sources

Production of High Purity Artificial Graphite

open access: yesThe Journal of the Society of Chemical Industry, Japan, 1963
The most effective treatment to remove V from raw coke was to treat the coke with 5% of NH4Cl and heat at 2000 deg C for 3 hr. A graphitization furnace was used to attain the temperature of 2000 deg C. Satisfactory results were also obtained by the same purification and graphitization process by adding the necessary amount of NH4Cl or NaCl to the raw ...
Tadao Ishikawa, Shiro Yoshizawa
openaire   +2 more sources

High quality electrostatically defined hall bars in monolayer graphene [PDF]

open access: yes, 2019
Realizing graphene's promise as an atomically thin and tunable platform for fundamental studies and future applications in quantum transport requires the ability to electrostatically define the geometry of the structure and control the carrier ...
Chen, Shaowen   +6 more
core   +2 more sources

Carbonaceous Materials as Anodes for Lithium-Ion and Sodium-Ion Batteries

open access: yesBatteries
The increasing global population and, thus, energy demand have made research into renewable energy sources more critical. Lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) have been recognized as the most promising technologies for storing ...
Koorosh Nikgoftar   +3 more
doaj   +1 more source

Experimental investigation and prediction of wear behavior of cotton fiber polyester composites

open access: yesFriction, 2017
The cotton fiber reinforced polyester composites were fabricated with varying amount of graphite fillers (0, 3, 5 wt.%) with a hand lay-up technique.
Hiral H. Parikh, Piyush P. Gohil
doaj   +1 more source

Defect-induced magnetism in graphite through neutron irradiation

open access: yes, 2014
We have investigated the variation in the magnetization of highly ordered pyrolytic graphite (HOPG) after neutron irradiation, which introduces defects in the bulk sample and consequently gives rise to a large magnetic signal.
Arenholz, Elke   +7 more
core   +3 more sources

Microbial catalysis of the oxygen reduction reaction for microbial fuel cells: a review. [PDF]

open access: yes, 2012
The slow kinetics of the electrochemical oxygen reduction reaction (ORR) is a crucial bottleneck in the development of microbial fuel cells (MFCs). This article firstly gives an overview of the particular constraints imposed on ORR by MFC operating ...
Bergel, Alain   +2 more
core   +4 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Formulation and manufacturing optimization of lithium-ion graphite-based electrodes via machine learning

open access: yesCell Reports Physical Science, 2021
Summary: Understanding the formulation and manufacturing parameters that lead to higher energy density and longevity is critical to designing energy-dense graphite electrodes for battery applications.
Stavros X. Drakopoulos   +12 more
doaj   +1 more source

Effect of oxygen plasma etching on graphene studied with Raman spectroscopy and electronic transport [PDF]

open access: yes, 2010
We report a study of graphene and graphene field effect devices after exposure to a series of short pulses of oxygen plasma. We present data from Raman spectroscopy, back-gated field-effect and magneto-transport measurements.
Isaac Childres   +10 more
core   +3 more sources

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