Carbon materials such as graphite and graphene exhibit high electrical conductivity. We examined the electrical conductivity of synthetic and natural graphene powders after the chemical reduction of synthetic and natural graphite oxide from synthetic and natural graphite. The trend of electrical conductivity of both graphene (synthetic and natural) was compared with different graphite materials...

Scientists are searching for eluding link between spirituality and science. Some believe fundamental essences of universe to be energy and information. As per current understanding, energy and matter always coexisted and is considered one and the same. Energy is considered as ‘matter in perpetual motion’ and matter as ‘stationary energy’. Interconversion between matter and energy has been defin...

The cyclic voltammetry of red PbO, -PbO2, -PbO2 and BaPbO3 was studied with two different types of electrodes in acidic and alkaline media. In one case, microcrystalline particles of lead oxides were mechanically immobilized on the surface of paraffin-impregnated graphite rod electrodes (PIGE), while in the other case, lead oxides were added to a paste of graphite and silicone oil. The overall ...

A reliable, easily worked process for depositing coherent, compact and pore-free layers of iridium could, when fully developed, be the means of making use as never before of the outstanding and indeed unique characteristics of iridium. Iridium has a very high melting point2443OC-aIId as a platinum group metal it does not scale or tarnish when heated in air even to incandescence. I t is true tha...

In this study, simultaneous electrochemical detection of ascorbic acid (AA), dopamine (DA), and uric acid (UA) was performed using a modified graphite paste electrode (MGPE) with epigallocatechin gallate (EGCG) and green tea (GT) powder. It was shown that the anodic peak current increased in comparison with that of the graphite paste electrode (GPE) in the cyclic voltammograms. The optimal pH f...

Micro-coiled fibers of carbon, Sic, Si N Tic, ZrC and Hf C were prepared by a metal-impurity activa?e%'chemical vapor deposition or vapour phase metallizing of the coiled carbon fibers. The growth conditions, morphology, growth mechanism and some properties were examined. The double-coiled carbon fibers were prepared using acetylene as a carbon source and various powders or plates of transition...

Metal crystals were encapsulated in graphitic shells by evaporation of metal and carbon in an electric arc discharge [1–4]. Holes were drilled into the graphite cathodes and filled with a powder consisting of a mixture of graphite and a metal. Gold, platinum, molybdenum, or tungsten powders were used, respectively. An arc (40 V, 55 A) was operated for 510 seconds in a helium atmosphere (330 mba...

The effects of mechanical milling on the microstructure, morphology and electrochemical performance of graphite powders with respect to lithium insertion are studied. After 150 h of ball-milling, the well-graphitized graphite has been pulverized into small particles with a size of about 50 nm, in which there are a lot of excess vacancies, microcavities and metastable carbon interstitial phases ...