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Pure and Applied Chemistry

The Scientific Journal of IUPAC

Ed. by Burrows, Hugh / Stohner, Jürgen


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1365-3075
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Volume 82, Issue 11

Issues

Pyrolytic carbons from acid/base-treated rice husk as lithium-insertion anode materials

George Ting-Kuo Fey
  • Corresponding author
  • Department of Chemical and Materials Engineering, National Central University, Chung-Li 32054, Taiwan
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/ Yung-Da Cho
  • Corresponding author
  • Department of Chemical and Materials Engineering, National Central University, Chung-Li 32054, Taiwan
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/ Chung-Lai Chen
  • Corresponding author
  • Department of Chemical and Materials Engineering, National Central University, Chung-Li 32054, Taiwan
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/ Yu-Yen Lin
  • Corresponding author
  • Department of Chemical and Materials Engineering, National Central University, Chung-Li 32054, Taiwan
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/ T. Prem Kumar
  • Corresponding author
  • Central Electrochemical Research Institute, Karaikudi 630 006, Tamil Nadu, India
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/ Shih-Hung Chan
  • Corresponding author
  • Fuel Cell Center, Yuan Ze University, No. 135, Yuandong Road, Chung-Li, Taoyuan 32003, Taiwan
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Published Online: 2010-08-03 | DOI: https://doi.org/10.1351/PAC-CON-09-11-35

The effects of hydrochloric acid and sodium hydroxide as leachants on the lithium-insertion properties of pyrolytic carbons prepared from rice husk are presented. All the disordered carbonaceous products had interlayer spacings (d002) of more than 3.7 Å, with values decreasing with an increase in the concentration of the leachant. The values of the H/C ratio and the R-parameter, the reciprocal of which is a measure of the number of non-parallel single layers of carbon, also diminished with an increase in the concentration of NaOH. An increase in the alkali concentration was found to improve the porosity of the carbons, as evidenced by the Brunauer–Emmett–Teller (BET) surface area data. An interaction of these factors determines the observed capacities of the carbon products. The highest insertion and deinsertion capacities were observed with the carbon obtained from rice husk treated with 0.3 M NaOH, the values being 819 and 463 mAh/g, respectively.

Keywords: anode materials; carbon; lithium-ion batteries; rice husk leaching; rice husk pyrolysis

Conference

International Symposium on Novel Materials and Their Synthesis (NMS-V) and the 19th International Symposium on Fine Chemistry and Functional Polymers (FCFP-XIX), Novel Materials and their Synthesis, NMS, Novel Materials and their Synthesis, 5th, Shanghai, China, 2009-10-18–2009-10-22

References

About the article

Published Online: 2010-08-03

Published in Print: 2010-08-03


Citation Information: Pure and Applied Chemistry, Volume 82, Issue 11, Pages 2157–2165, ISSN (Online) 1365-3075, ISSN (Print) 0033-4545, DOI: https://doi.org/10.1351/PAC-CON-09-11-35.

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