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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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一种合成lifepo4的新方法
Keywords: 无机非金属材料,磷酸铁锂,共沉淀
Abstract:
？结合共沉淀原理和腐蚀电化学原理,提出了一种合成lifepo4的新方法.对新方法合成路线中的反应物、添加物以及热处理条件作了实验分析,并用xrd分析了lifepo4的晶体结构和晶粒尺寸分布,用sem分析了形貌,用充放电测试技术分析了材料的比容量及其电化学性能.结果表明:新方法在合成中不引入其它杂质离子,避免了常规共沉淀合成工艺中过滤、洗涤等过程对lifepo4前驱体的不利影响.用新方法制备的lifepo4晶粒分布在20-70nm,在0.1c下首次放电容量为\linebreak147mah/g.新方法有利于对lifepo$_{4}$的mg2+掺杂改性,明显地提高life1-xmgxpo4的电化学性能.
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