• Title/Summary/Keyword: electrochemical synthesis

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Spinel Materials for High Power Batteries

  • Kim Jaekook
    • 한국전기화학회:학술대회논문집
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    • 2003.11a
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    • pp.103-120
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    • 2003
  • [ $\because$ ] Technology-driven new needs- Various kinds of requirment depend on environments. $\because$ Science-driven design and synthesis

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Electrochemically Fabricated Alloys and Semiconductors Containing Indium

  • Chung, Yonghwa;Lee, Chi-Woo
    • Journal of Electrochemical Science and Technology
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    • v.3 no.3
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    • pp.95-115
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    • 2012
  • Although indium (In) is not an abundant element, the use of indium is expected to grow, especially as applied to copper-indium-(gallium)-selenide (CI(G)S) solar cells. In future when CIGS solar cells will be used extensively, the available amount of indium could be a limiting factor, unless a synthetic technique of efficiently utilizing the element is developed. Current vacuum techniques inherently produce a significant loss of In during the synthetic process, while electrodeposition exploits nearly 100% of the In, with little loss of the material. Thus, an electrochemical process will be the method of choice to produce alloys of In once the proper conditions are designed. In this review, we examine the electrochemical processes of electrodeposition in the synthesis of indium alloys. We focus on the conditions under which alloys are electrodeposited and on the factors that can affect the composition or properties of alloys. The knowledge is to facilitate the development of electrochemical means of efficiently using this relatively rare element to synthesize valuable materials, for applications such as solar cells and light-emitting devices.

An Overview of the Activated Carbon Fibers for Electrochemical Applications

  • Lee Gyoung-Ja;Pyun Su-Il
    • Journal of the Korean Electrochemical Society
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    • v.9 no.1
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    • pp.10-18
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    • 2006
  • This article is concerned with the overview of the activated carbon fibers. Firstly, this review provides a comprehensive survey of the overall processes for the synthesis of the activated carbon fibers from the carbonaceous materials. Subsequently, the physicochemical properties such as pore structures and surface oxygen functional groups of the activated carbon fibers were discussed in detail. Finally, as electrochemical applications of the activated carbon fibers to electrode materials for electric double-layer capacitor (EDLC), the electrochemical characteristics of the activated carbon fiber electrodes and the various methods to improve the capacitance and rate capability were introduced. In particular, the effect of pore length distribution (PLD) on kinetics of double-layer charging/discharging was discussed based upon the experimental and theoretical results in our work. And then we discussed in detail the applications of the activated carbon fibers to adsorbent materials for purification of liquid and gas.

Template Synthesis of $Ni(OH)_2$ nanowires by Electrochemical Process

  • Zhang, Wentao;Beili, Pang;Lee, Hong-Ro
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2008.11a
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    • pp.68-68
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    • 2008
  • There are several methods for oxide coating on metals, such as aluminum or carbon nanotubes(CNTs). Usually CVD method is introduced for various oxide coating on CNTs. Another method is electrochemical method which use potential-pH diagram for oxide coating on metal or CNTs. In this experiment, electrochemical coating parameter for oxide coating on aluminum template modified by acids and hydrogen peroxide ($H_2O_2$) were examined. SEM micrographs displayed clearly $Ni(OH)_2$ coating on template. For confirmation of electrochemical method application to EDLC electrode material fabrication, EDS spectrum was analyzed.

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