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  Improved Electrochemical Performance of Cu3B2O6-Based Conversion Model Electrodes by Composite Formation with Different Carbon Additives

Parzych, G., Mikhailova, D., Oswald, S., Täschner, C., Ritschel, M., Leonhardt, A., et al. (2014). Improved Electrochemical Performance of Cu3B2O6-Based Conversion Model Electrodes by Composite Formation with Different Carbon Additives. Journal of the Electrochemical Society, 161(9), A1224-A1230. doi:10.1149/2.0221409jes.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-C204-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-C205-A
Genre: Journal Article

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 Creators:
Parzych, Grzegorz1, Author
Mikhailova, Daria2, Author              
Oswald, Steffen1, Author
Täschner, Christine1, Author
Ritschel, Manfred1, Author
Leonhardt, Albrecht1, Author
Eckert, Jürgen1, Author
Ehrenberg, Helmut1, Author
Affiliations:
1external, ou_persistent22              
2Daria Mikhailova, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863448              

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 Abstract: Different kinds of composite electrode materials containing copper boron oxide Cu3B2O6 as an active component are studied in Li-ion test cells. Cu3B2O6-based electrodes are modified by incorporating 10% w/w of either single-wall/double-wall (SW/DW), multi-wall (MW) carbon nanotubes (CNTs) or reduced graphene oxide (RGO). The studies show an increase of cycling performance for all composites in comparison to the standard mixture with 10% w/w amorphous carbon. The best improvement of specific capacity is achieved for the SW/DW CNT Cu3B2O6 composite. After 30 cycles the capacity is still over 152 mAh/g in comparison to 20 mAh/g for the standard mixture. Electrochemical impedance spectroscopy reveals a significant decrease of the resistivity of the Schottky contacts in the CNTs- and RGO- composites compared to the standard mixture. This supports the conclusion that the main mechanism for the capacity improvement is related to better electronic transport properties of the composites.

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 Dates: 2014-05-28
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1149/2.0221409jes
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Title: Journal of the Electrochemical Society
Source Genre: Journal
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Publ. Info: New York, NY : Electrochemical Society
Pages: - Volume / Issue: 161 (9) Sequence Number: - Start / End Page: A1224 - A1230 Identifier: ISSN: 0013-4651
CoNE: https://pure.mpg.de/cone/journals/resource/991042748197686