[18a-M_103-1~13] 8.1 Plasma production and diagnostics

12:15 PM - 12:30 PM JST(3:15 AM - 3:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-M_103-13] Lithium-Ion Battery Performance of Si/SiO_x Nanomaterials Synthesized by Tandem-Modulated Induction Thermal Plasma with Different Modulation Cycles

〇Rio Okano¹, Reo Tanaka¹, Noritaka Kobayashi¹, Yasunori Tanaka¹, Yusuke Nakano¹, Tatsuo Ishijima¹, Makoto Kambara², Mizuki Yamanaka², Shu Watanabe³, Keitaro Nakamura³ (1.Kanazawa Univ., 2.Osaka Univ., 3.Nisshin Seifun Inc.)

Keywords:

Induction thermal plasma,Synthesis of Si/SiOx nanomaterial,Lithium ion battery

To achieve high capacity and long cycle life in next-generation lithium-ion batteries (LIBs), Si/SiO_x nanomaterials (NMs) were synthesized using a tandem-modulated induction thermal plasma. The modulation cycle of the coil current was set to 20 ms and 40 ms, and the results revealed that the oxidation ratio of the Si/SiO_x NMs could be controlled by changing the modulation cycle. Furthermore, electrochemical tests showed that the difference in oxidation ratio significantly affected the charge-discharge performance of the batteries. In particular, the material synthesized with a modulation cycle of 20 ms exhibited higher capacity over 100 charge-discharge cycles.