X. Xia et Zp. Guo, STUDIES ON A NOVEL SECONDARY BATTERY - MH MNO2 RECHARGEABLE BATTERY .2. CHARACTERISTICS OF THE MNO2 CATHODE/, Journal of the Electrochemical Society, 144(8), 1997, pp. 213-216
The characteristics of the MnO2 cathode of a MH/MnO2 battery have been
studied by cyclic voltammetry, x-ray diffraction, and potentiostatic
techniques. It was found that the addition of Ni(OH)(2) to the MnO2 ca
n prevent overcharge of the MnO2 and decrease the imbalance of the cha
rge/discharge states of the positive and negative electrodes, raise th
e working voltage of the MH/MnO2 cell, and prevent the formation of Mn
3O4, thereby improving the rechargeability of the MnO2 electrode. The
discharge mechanism is also discussed.