Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1294828 | Journal of Power Sources | 2008 | 5 Pages |
Abstract
The high-temperature charge acceptance of Ni-MH batteries has been improved through the addition of calcium fluoride to the pasted nickel hydroxide electrode made using spherical Co(OH)2-coated nickel hydroxide powder. The charge acceptance of the Ni-MH battery at 60 °C is over 95% at 1 C charge/discharge rates. The charge acceptance at 60 °C remains at over 90% through 10 cycles. The use of Co(OH)2-coated Ni(OH)2 plus a CaF2 addition to the positive electrode also significantly improved the high-temperature stability in terms of reduced gas evolution.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Xuezeng Zhang, Zhixin Gong, Shumei Zhao, Mingming Geng, Yan Wang, Derek O. Northwood,