Toshiba Battery Co., Ltd.

Kabushiki Kaisha Toshiba

Hidekazu Oppata

Ken-ichi Kanno

Kiyoshi Ishitsuka

Hideki Yoshida

Masaaki Yamamoto

Hiroyuki Hasebe

Kunihiko Miyamoto

Shinji Tsuruta

Naomi Bando

Makoto Wakabayashi

Ken Komiyama

Tetsuya Yamane

An alkaline secondary battery which is characterized in that it comprises, a positive electrode containing nickel hydroxide having a value of 0.8&#xb0; or more in the half-width of a peak in the (101) plane thereof as measured by X-ray powder diffraction (2&#x3b8;) using Cu&#x2014;K&#x3b1; ray, and 4.0 to 15% by weight of at least one material selected from the group consisting of zinc and zinc compounds, and an alkali electrolyte, the ratio of which to theoretical capacity of the positive electrode being 0.7 to 2.0 cm/Ah, the weight of the at least one material being one calculated as zinc element and based on the weight of the nickel hydroxide.

Electrodes, alkaline secondary battery, and method for manufacturing alkaline secondary battery

Disclosed is a method of manufacturing an alkaline secondary battery improved in the positive electrode utilization, the large-current discharge characteristic, the discharge capacity, and the capacity recovery ratio after storage. This method of manufacturing an alkaline secondary battery comprising a positive electrode containing a nickel compound and a cobalt compound, a negative electrode and an alkaline electrolyte, the method comprising the step of performing initial charging which comprises a charging process of supplying a current I (mA) satisfying the following Inequality (1):

Alkaline secondary battery manufacturing method, alkaline secondary

Growing community of inventors

Tokyo, Japan

Hidekazu Oppata