Journal of Electrochemical Science and Technology

The Korean Electrochemical Society (한국전기화학회)
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Surface-modified Li[Ni0.8Co0.15Al0.05]O2 Cathode Fabricated using Polyvinylidene Fluoride as a Novel Coating

  • Lee, Jun Won (Department of Advanced Materials Engineering, Kyonggi University) ;
  • Park, Yong Joon (Department of Advanced Materials Engineering, Kyonggi University)
  • Received : 2016.07.26
  • Accepted : 2016.09.22
  • Published : 2016.12.31
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Abstract

This study describes the effect of coating the $Li[Ni_{0.8}Co_{0.15}Al_{0.05}]O_2$ cathode surface with a homogeneous carbon layer produced by carbonization of polyvinylidene fluoride (PVDF) as a novel organic source. The phase integrity of the above cathode was not affected by the carbon coating, whereas its rate capability and cycling performance were enhanced. Similarly, the cathode thermal stability was also improved after coating, which additionally protected the cathode surface against the reactive electrolyte containing hydrofluoric acid (HF). The results show that coating the $Li[Ni_{0.8}Co_{0.15}Al_{0.05}]O_2$ cathode with carbon using the PVDF precursor is an effective approach to enhance its electrochemical properties.

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