LiCl-KCl共晶溶融塩中のNi/Ni (II)の電極反応のインピーダンス

DOI Web Site Web Site

書誌事項

タイトル別名
  • Impedance Measurement of Ni/Ni (II) Electrode Reaction in LiCl-KCl Eutectic Melt
  • LiCl-KCl共晶溶融塩中のNi/Ni(2)の電極反応のインピーダンス
  • LiCl KCl キョウショウ ヨウユウエンチュウ ノ Ni Ni 2 ノ デ

この論文をさがす

抄録

Impedance measurement of Ni/Ni(II) electrode reaction has been made in the LiCl-KCl eutectic melt in the frequency range between 100 K∼0.01 Hz, with regard to the exchange current density, electrical double layer and transfer coefficient. The experiments were made at 500°C under argon atmosphere. The electrode potential of nickel in the molten salt containing NiCl2 (1×10−2∼9×10−1 mol%) revealed a reversible potential. The cathodic polarization curves exhibited a limiting current density controlled by diffusion of nickel (II) ion, whereas the anodic branch obeyed the Tafel relation. The Cole-Cole plot of the electrode impedance consisted of a semicircle at high frequencies and a straight line with a slope of 45° at low frequencies, which corresponded to the charge transfer and diffusion process respectively.<BR>The exchange current density obtained from the radius of the semicircle increased with increasing Ni(II) concentration from 1.18 to 9.75×104 A·m−2 the transfer coefficient being 0.49. The double layer capacitance depended strongly on the electrode potential, exhibiting a diffuse-type character.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 43 (9), 866-871, 1979

    公益社団法人 日本金属学会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ