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Black Phosphorus Nano Flake Lithium Ion Battery Using Electrophoretic Deposition

전기영동 증착법을 이용한 Black Phosphorus Nano Flake 리튬이온 배터리

  • Kim, Juyun (Department of Materials Science and Engineering, Hongik University) ;
  • Park, Byoungnam (Department of Materials Science and Engineering, Hongik University)
  • 김주윤 (홍익대학교 신소재공학과) ;
  • 박병남 (홍익대학교 신소재공학과)
  • Received : 2019.01.05
  • Accepted : 2019.02.07
  • Published : 2019.05.01

Abstract

Black phosphorus (BP) is a potential candidate for an anode in lithium ion batteries due to its high theoretical capacity and the large interlayer spacing in the monolayered phosphorene form, allowing for lithium intercalation/deintercalation. In this study, large-scale exfoliation of bulk BP was accomplished using a solution of NaOH and N-methyl-2-pyrrolidone (NMP), yielding phosphorene, which can be assembled into nanoflakes using electrophoretic deposition (EPD). Through the systematic addition of NaOH and subsequent sonication, BP nanoflakes were obtained in high yields by EPD, allowing for the integration of these nanoflakes into an anode in the film state. Anodes with a charge/discharge capacity of 172 mAh/g at a rate of 200 mA/g were obtained, which are promising for battery applications through various post-film treatments.

Keywords

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Fig. 1. Formation of black phosphorus nanoparticles by liquid phase stripping.

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Fig. 2. Change in deposition amount of black thin film on SiO2 substrate with NaOH concentration (a) 0.00 mg/ml, (b) 0.16 mg/ml, (c) 0.32 mg/ml, (d) 0.64 mg/ml, (e) 0.90 mg/ml, and (f) saturate solution.

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Fig. 3. (a), (b) Charge/discharge capacity and curve at 0.1 C-rate of black phosphorus EPD electrode and (c), (d) charge/discharge capacity and curve at 200 mAh/g of black phosphorus (NaOH) EPD electrode.

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