废旧镍氢电池溶胶-凝胶法制备Ni0.5Co0.5Fe2O4的研究
Electronic Components and Materials（2013）
Abstract
以硫酸溶解废旧镍氢电池所得溶液为原料,采用溶胶-凝胶法制备出纳米晶镍钴铁氧体.借助于XRD、TG和VSM对产品的相结构和磁性能进行研究,并进一步探讨制备过程中的影响因素.结果表明,溶胶-凝胶法制备镍钴铁氧体的适宜条件为:柠檬酸与金属离子总量的摩尔比1:1,溶液的pH值7.0,煅烧温度850℃,煅烧时间3h.该条件下所制得产品的剩余磁化强度为13.635 A·m2/kg,矫顽力为32.5 kA/m,饱和磁化强度为50.713 A·m2/kg.
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Key words
magnetic hysteresis loop,nanocrystal Ni-Co ferrites,sol-gel method,spent Ni-MH batteries,magnetic properties
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