New High-Capacity Eco-Battery Marks World's First
Sep. 11, 2002
Kawasaki announced in September that it has successfully developed a rechargeable battery powered by granular-shaped cell material, an innovative, environmentally friendly storage battery ideal for highcapacity usage. The development effectivelyharnesses natural energy, known for its inherently large fluctuations, and delivers a smooth supply of power.
The new battery can theoretically be classified as a nickel hydride battery, but it is the first battery in the world created simply by filling a container with granular cell materials. This method greatly facilitates battery production because these cell materials can be easily filled and removed from the battery. The development also slashes costs, since carbon fiber replaces the more costly cobalt as the conducting material, and practically the entire battery—including the cell materials—can be easily recycled. No harmful substances, such as lead, cadmium or mercury, are used. The granular cell materials have been developed in cooperation with Osaka Gas Co., Ltd.
The new battery is being tested in an array of Kawasaki products ahead of the first sample shipments by the middle of next year. Ongoing research is leading to battery and manufacturing improvements, as well as identifying potential applications. The new battery has already proven superior to conventional lead batteries in starting up Kawasaki’s gas turbine generator set (output: 228kW), despite being only half the weight and volume of its lead counterpart.