Nickel-metal Hydride Battery Using Fiber-type Ni(OH)₂ Electrode: Electrode Manufacturing and Battery Performance

Abstract

Fiber-type nickel-hydroxide electrode, namely the Ni(OH)₂ layer formed on a nickel-plated carbon fiber, exhibited good high-rate discharge performances. The electrode manufacturing apparatus was developed and several meters of fiber-type electrodes were prepared. An approximate 350 mAh cell using fiber-type electrode exhibited better high-rate discharge performance and lower internal resistance than the conventional paste-type electrode with the equivalent energy density (Ah L⁻¹).