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HYDROGEN-OCCLUDING ALLOY, POWDER OF HYDROGEN-OCCLUDING ALLOY, PROCESSES FOR PRODUCING THESE, AND NEGATIVE ELECTRODE FOR NICKEL-HYDROGEN SECONDARY BATTERY
HYDROGEN-OCCLUDING ALLOY, POWDER OF HYDROGEN-OCCLUDING ALLOY, PROCESSES FOR PRODUCING THESE, AND NEGATIVE ELECTRODE FOR NICKEL-HYDROGEN SECONDARY BATTERY
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机译:吸氢合金,吸氢合金粉末,制备方法以及镍氢二次电池负极
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摘要
A hydrogen-occluding alloy which is reduced in cobalt content, has a satisfactory balance among activity, corrosion resistance, and life characteristics, and has excellent suitability for recycling. The hydrogen-occluding alloy has a composition represented by the formula (1), is constituted substantially of a single phase, and has an average crystal grain diameter of 15 microm or smaller and a major axis/minor axis ratio in each crystal of 3 or higher. RNiaCobAlcMndMe (1) (R is any of rare earth elements including yttrium, etc.; M is magnesium, iron, copper, zirconium, etc.; and 3.30a=5.15, 0.10=b=0.50, 0.15=c0.35, 0.10=d=0.45, 0=e=0.50, 5.10=a+b+c+d+e=5.50, and 0.1=c/d=5.0.)
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机译:钴含量降低的吸氢合金在活性,耐腐蚀性和寿命特性之间具有令人满意的平衡,并且具有优异的再循环适应性。所述吸氢合金具有由式(1)表示的组成,基本上由单相构成,并且平均晶体粒径为15μm或更小,并且每个晶体中的长轴/短轴比为3或3。更高。 RNiaCobAlcMndMe(1)(R是包括钇等的稀土元素中的任何一种; M是镁,铁,铜,锆等的M;以及3.30 <= 5.15、0.10 <= b <= 0.50、0.15 <= c <0.35、0.10 <= d <= 0.45、0 <= e <= 0.50、5.10 <= a + b + c + d + e <= 5.50和0.1 <= c / d <= 5.0。)
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