J. Technology and Education, Vol.13, No.2, pp.71-75, 2006

研究論文

　

ニッケル極の充放電に関する考察

　

山田　太^＊１，加納　大樹^１，村林　昌直^１，森　邦彦^１，伊藤　八十四^１，

宗内　篤夫^２，小倉　弘幸^１

^１鈴鹿工業高等専門学校（〒510-0294　三重県鈴鹿市白子町）

^＊iezaki@elec.suzuka-ct.ac.jp

^２サムスン横浜研究所（〒230-0027　神奈川県横浜市鶴見区菅沢町2-7）

　

　

Study on Charge/Discharge Process of Nickel Electrode

　

Futoshi YAMADA^＊１, Taiki KANO^１, Masanao MURABAYASHI^１, Kunihiko MORI^１

Yasoshi ITO^１, Atsuo SONAI^２, and Hiroyuki OGURA^１

^１Suzuka National College of Technology (Shiroko-cho Suzuka Mie 510-0294 Japan)

^２Samsung Yokohama Research Institute

(2-7 Sugasawa-cho Tsurumi-ku Yokohama Kanagawa 230-0027 Japan)

　

　

(Received September 20, 2006; Accepted November 21, 2006)

　

Abstract

Measurements of the ESCA spectrum and the electrode capacitance of a nickel electrode under various charge/discharge conditions were carried out in order to clarify the charge/discharge reaction mechanism of the nickel electrode.　The electrode capacitance increased with the charging, and the progress and values showed the maximum in the charge completion.　Then, the electrode capacitance rapidly decreased with the discharging process of the nickel electrode.　The charge/discharge reaction was examined from the view points of these findings and the measured ESCA spectrum of the nickel electrodes under various charge/discharge conditions.　The invasion and desorption of oxygen and potassium to the nickel hydroxide occurred by the charging and discharging processes of the nickel electrodes, respectively.　It was estimated that the charge/discharge reaction of the nickel electrode proceeded with the ionic intercalation and deintercalation of anions such as KO₂^- or KO^- to the nickel hydroxide.

Keywords : nickel electrode, capacitance measurement, charge/discharge reaction