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Discharge mechanism of MoS2 for sodium ion battery: Electrochemical measurements and characterization

Journal Article


Abstract


  • New emerging large scale battery market has demanded low cost and high power or energy density materials. Sodium (Na) is a promising candidate for an anode material because of its low cost and natural abundance. Also molybdenum disulfide (MoS2) is an attractive cathode material with layered structure. In this study a Na/MoS2 cell was assembled so as to evaluate its electrochemical properties as a rechargeable battery. In the first discharge Na/MoS2 cell showed two characteristic plateaus at 0.93 V and 0.8 V. Galvanostatic charge/discharge cycle was carried out in different voltage ranges according to the discharge depths (0.85 V and 0.4 V). The electrochemical behaviors of Na/MoS2 cells at each discharge depth were analyzed through characterization of the crystallographic changes by employing ex situ X-ray diffractometry (XRD) and transmission electron microscopy (TEM). Finally, Na/MoS2 reaction mechanism was suggested. © 2013 Elsevier Ltd.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2013

Citation


  • Park, J., Kim, J. S., Park, J. W., Nam, T. H., Kim, K. W., Ahn, J. H., . . . Ahn, H. J. (2013). Discharge mechanism of MoS2 for sodium ion battery: Electrochemical measurements and characterization. Electrochimica Acta, 92, 427-432. doi:10.1016/j.electacta.2013.01.057

Scopus Eid


  • 2-s2.0-84873453834

Start Page


  • 427

End Page


  • 432

Volume


  • 92

Abstract


  • New emerging large scale battery market has demanded low cost and high power or energy density materials. Sodium (Na) is a promising candidate for an anode material because of its low cost and natural abundance. Also molybdenum disulfide (MoS2) is an attractive cathode material with layered structure. In this study a Na/MoS2 cell was assembled so as to evaluate its electrochemical properties as a rechargeable battery. In the first discharge Na/MoS2 cell showed two characteristic plateaus at 0.93 V and 0.8 V. Galvanostatic charge/discharge cycle was carried out in different voltage ranges according to the discharge depths (0.85 V and 0.4 V). The electrochemical behaviors of Na/MoS2 cells at each discharge depth were analyzed through characterization of the crystallographic changes by employing ex situ X-ray diffractometry (XRD) and transmission electron microscopy (TEM). Finally, Na/MoS2 reaction mechanism was suggested. © 2013 Elsevier Ltd.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2013

Citation


  • Park, J., Kim, J. S., Park, J. W., Nam, T. H., Kim, K. W., Ahn, J. H., . . . Ahn, H. J. (2013). Discharge mechanism of MoS2 for sodium ion battery: Electrochemical measurements and characterization. Electrochimica Acta, 92, 427-432. doi:10.1016/j.electacta.2013.01.057

Scopus Eid


  • 2-s2.0-84873453834

Start Page


  • 427

End Page


  • 432

Volume


  • 92