Hydrogen storage materials having excellent kinetics, capacity, and cycle stability
First Claim
1. A BCC hydrogen storage alloy processed to be substantially free of oxides, said alloy stably absorbing at least 80% of its hydrogen storage capacity within 90 seconds, desorbing at least 80% of its total hydrogen storage capacity within 30 seconds, and reversibly storing at least 2.2 weight percent hydrogen at 90°
- C., said alloy reversibly storing at least 1.5 weight percent hydrogen per cycle for at least 700 cycles.
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Accused Products
Abstract
A BCC phase hydrogen storage alloy capable of storing approximately 4.0 wt. % hydrogen and delivering reversibly up to 3.0 wt. % hydrogen at temperatures up to 110° C. The hydrogen storage alloys also possess excellent kinetics whereby up to 80% of the hydrogen storage capacity of the hydrogen storage alloy may be reached in 30 seconds and 80% of the total hydrogen storage capacity may be desorbed from the hydrogen storage alloy in 90 seconds. The hydrogen storage alloys also have excellent stability which provides for long cycle life.
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Citations
17 Claims
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1. A BCC hydrogen storage alloy processed to be substantially free of oxides, said alloy stably absorbing at least 80% of its hydrogen storage capacity within 90 seconds, desorbing at least 80% of its total hydrogen storage capacity within 30 seconds, and reversibly storing at least 2.2 weight percent hydrogen at 90°
- C., said alloy reversibly storing at least 1.5 weight percent hydrogen per cycle for at least 700 cycles.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A BCC hydrogen storage alloy processed to be substantially free of oxides, said alloy reversibly storing at least 1.5 weight percent hydrogen for at least 700 cycles.
Specification