scholarly journals The Electrochemical Properties of Carbon-Coated Silicon/Graphite Composite Electrode

2006 ◽  
Keyword(s):  
Electrochemical Properties ◽  
Composite Electrode ◽  
Graphite Composite ◽  
Carbon Coated

SE-30 Graphite Composite Electrode: An Alternative for the Development of Electrochemical Biosensors

2010 ◽  
Vol 22 (20) ◽  
pp. 2460-2466 ◽  
Author(s):  
Afsaneh Safavi ◽  
Norooz Maleki ◽  
Fariba Tajabadi
Keyword(s):  
Composite Electrode ◽  
Electrochemical Biosensors ◽  
Graphite Composite

Electrochemical properties of carbon-coated TiO2 nanotubes as a lithium battery anode material

2012 ◽  
Vol 137 (1) ◽  
pp. 169-176 ◽  
Author(s):  
Kun-Young Kang ◽  
Young-Gi Lee ◽  
Sanghyo Kim ◽  
Seung Ree Seo ◽  
Jin-Chul Kim ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Anode Material ◽  
Tio2 Nanotubes ◽  
Lithium Battery ◽  
Carbon Coated ◽  
Battery Anode

Electrochemical Properties of Carbon-Coated NbO2 as a Negative Electrode for Lithium-Ion Batteries

2016 ◽  
Vol 724 ◽  
pp. 87-91 ◽  
Author(s):  
Chang Su Kim ◽  
Yong Hoon Cho ◽  
Kyoung Soo Park ◽  
Soon Ki Jeong ◽  
Yang Soo Kim
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Ball Milling ◽  
Carbon Coating ◽  
Electrochemical Impedance ◽  
Active Material ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Transfer Resistance ◽  
Carbon Coated

We investigated the electrochemical properties of carbon-coated niobium dioxide (NbO2) as a negative electrode material for lithium-ion batteries. Carbon-coated NbO2 powders were synthesized by ball-milling using carbon nanotubes as the carbon source. The carbon-coated NbO2 samples were of smaller particle size compared to the pristine NbO2 samples. The carbon layers were coated non-uniformly on the NbO2 surface. The X-ray diffraction patterns confirmed that the inter-layer distances increased after carbon coating by ball-milling. This lead to decreased charge-transfer resistance, confirmed by electrochemical impedance spectroscopy, allowing electrons and lithium-ions to quickly transfer between the active material and electrolyte. Electrochemical performance, including capacity and initial coulombic efficiency, was therefore improved by carbon coating by ball-milling.

scholarly journals Lead Oxide-Graphite Composite Electrode for pH Measurement

2015 ◽  
Vol 15 (1) ◽  
pp. 61-66
Author(s):  
Ranjan Nepal ◽  
Raja Ram Pradhananga
Keyword(s):  
Metal Ions ◽  
Lead Oxide ◽  
Composite Electrode ◽  
Low Cost ◽  
Potential Gradient ◽  
Ph Measurement ◽  
Indicator Electrode ◽  
Quick Response ◽  
Acid Base ◽  
Graphite Composite

Lead oxide-graphite composite electrode for pH measurement had been fabricated with different percentage of PbO2 in the composite. The proportions of lead oxide affected the sensitivity of the electrode. The electrode composed of 50% lead oxide and 50% graphite gave reproducible result and behaved in Nernstian manner with a potential gradient of -58.8±0.3 mV per unit change in pH. Metal ions such as iron (II), iron (III) and lead (II) interfered in the measurement of pH, while silver (I), copper (II), oxidizing agents such as dichromate and permanganate do not interfere. In absence of interfering ion, the lead oxide-graphite composite electrode could be used for the measurement of pH from 2 to 11. This electrode can also be used as an indicator electrode for acid base titrations. Low cost, quick response, easy to fabricate are some of the advantages of the lead oxide-graphite composite electrode. This electrode is also found to be sensitive to Pb2+ -ions and can be used as a Pb2+-ion sensor up to 10-4M.DOI: http://dx.doi.org/10.3126/njst.v15i1.12015  Nepal Journal of Science and TechnologyVol. 15, No.1 (2014) 61-66

Low cost stretchable carbon graphite composite electrode

2020 ◽  
Vol 26 (4) ◽  
pp. 126-132
Author(s):  
Su-Yong Nam ◽  
Shinyoung Kim ◽  
Se-Hoon Park ◽  
Hyun Jin Nam
Keyword(s):  
Composite Electrode ◽  
Low Cost ◽  
Graphite Composite

scholarly journals A SOLID Fe2O3-GRAPHITE COMPOSITE ELECTRODE FOR pH MEASUREMENT

2015 ◽  
Vol 12 (12) ◽  
pp. 44-47
Author(s):  
Suchi Srivastava ◽  
Raja Ram Pradhananga
Keyword(s):  
Electrode Potential ◽  
Composite Electrode ◽  
Low Cost ◽  
Ph Sensor ◽  
Potential Gradient ◽  
Graphite Composite ◽  
Ph Response ◽  
Potentiometric Response ◽  
Unit Change ◽  
Oxidized Graphite

A solid Fe2O3-graphite composite electrode was prepared and investigated for use as a potentiometric pH sensor. The electrode was constructed by mixing iron (III) oxide, oxidized graphite and wax that was put over silver disc onto a polypropylene rod. The response of the electrode was investigated by measuring electrode potential as a function of pH.The effect of composition of the electrode material (Fe2O3 and oxidized graphite ration) on the electrode response was investigated. The electrode with 40% Fe2O3, 30% graphite and 30% wax by mass was found to give the best potentiometric response. This electrode behaves in Nernstian manner with a potentiometric gradient of 56.6±0.4 mV per unit change in pH at 25?C within the working range of pH 2-9.The electrode was also used for the end-point detection in potentiometric acid-base titrations and found to be an excellent electrode for pH-metric titration. The effect of oxidation of electrode on pH response was investigated by dipping electrode in 0.1N KMnO4, 1:1HNO3 and 0.1N Ce4+ solutions for different interval of time. This treatment of the electrode with oxidizing agents increased the standard electrode potential of the electrode however potential gradient per unit change in pH remains unaltered. Low cost, quick response and easy to prepare are the advantages of the iron oxide - graphite composite electrode as a pH sensor. However some metal ions and oxidising agents interfered in the determination of pH using this electrode which is the limitation of using these electrodes.Scientific World, Vol. 12, No. 12, September 2014, page 44-47

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