LARGE-SCALE PRODUCTION AND QUALITY ASSURANCE OF HYDROGEN STORAGE (BATTERY) ALLOYS

The new generation of high-capacity metal hydride rechargeable batteries is a cadmium-free energy alternative to current types of accumulators. While the first steps were made for consumer wireless applications, the newest developments aim toward traction systems (zero-emission cars). This article introduces the materials selection, quality control, and production principles of alloy systems suitable for storing hydrogen either electrochemically or by gas absorption. Examples of Zr-Ni, Ti-Mn2, and rare earth-Ni5 are demonstrated from the metallurgical standpoint. These alloys (currently produced in large scale-tons/day) are now used in industry after approximately 20 years of development.