Silicon electrodeposition in water-soluble KF-KCl molten salt: Investigations on the reduction of Si(IV) ions

Kazuma Maeda, Kouji Yasuda, Toshiyuki Nohira, Rika Hagiwara, Takayuki Homma

研究成果: Article査読

34 被引用数 (Scopus)

抄録

A new method for electroplating Si using a water-soluble KF-KCl molten salt electrolyte and high-purity gaseous SiCl4 has been proposed. To gain a fundamental understanding of the process, the electrodeposition of Si from Si(IV) complex ions on a Ag electrode in a molten KF-KCl-K2SiF6 system was investigated by cyclic voltammetry at 923 K. The reduction of Si(IV) ions to metallic Si was observed as a single 4-electron wave, which is explained by an EqEr (quasireversible-reversible electron transfer reactions) mechanism. The diffusion coefficient of the Si(IV) ions in the electrolyte was determined to be 3.2 × 10-5 cm2 s-1 at 923 K by chronoamperometry.

本文言語English
ページ(範囲)D444-D448
ジャーナルJournal of the Electrochemical Society
162
9
DOI
出版ステータスPublished - 2015 6 26

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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