Electrochemical Properties of Multi-Wall Carbon Nanotubes as a Novel Negative Electrode for Calcium Secondary Batteries

Abstract:

We investigated the electrochemical behavior and properties of multi-wall carbon nanotubes (MWCNTs) as a novel negative electrode for calcium ion batteries during charging and discharging. The second charge and discharge capacities were ~63 and ~43 mAh g^–1 in propylene carbonate-based electrolyte and ~86 and ~60 mAh g^–1 in ethylene carbonate-based electrolyte, respectively. X-ray diffraction analysis results showed that the inter-layer distance of the MWCNTs was increased after charging, indicating that calcium ions were intercalated into the MWCNT graphitic sheets during the charging. The electrochemical performance of the MWCNT electrode was improved by using ball milling to introduce defects.

• Periodical: Materials Science Forum (Volume 859)
• Pages: 75-78
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.859.75
• Online since: May 2016
• Authors: Chang Hee Lee, Chang Su Kim, Yun Taek Jeong, Jun Hwan Kim, Soon Ki Jeong*, Yang Soo Kim
• Keywords: Calcium Ion Battery, Multi-Wall Carbon Nanotube, Negative Electrode, X-Ray Diffraction

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