摘要
碳纳米管以其较大的长径比和高导电性的优势被广泛研究与关注,本文采用溶胶凝胶法制备Co-Mo/Al_(2)O_(3)催化剂并在不同温度(550℃、700℃、900℃)对催化剂进行煅烧,研究了催化剂在不同煅烧温度下使用化学气相沉积法生长的碳纳米管产品效果。对所使用不同煅烧温度的催化剂合成的碳纳米管,进行了形貌表征分析及导电性能测试。并将其制作成导电浆料添加到锂离子电池中,测试其导电性能以及电化学性能。实验测试结果显示,以550℃温度对催化剂进行煅烧获得的钴系碳纳米管性能最佳,将它制作成导电浆料添加到磷酸铁锂正极中表现优异的性能。
Carbon nanotubes have been widely studied and concerned because of their large aspect ratio and high conductivity.Co-Mo/Al_(2)O_(3) catalysts were prepared by sol-gel method and calcined at different temperatures(550℃,700℃,900℃)The properties of carbon nanotube products grown with the catalysts calcined at different temperatures was investigated.The morphology and electrical conductivity of carbon nanotubes were characterized,and these carbon nanotubes were further processed and dispersed into conductive additive paste for the lithium-ion batteries.The effects of addition of conductive additive paste were investigated by testing the conductivity and electrochemical properties of the batteries.The results showed that the cobalt-based carbon nanotubes obtained by calcining the catalyst at 550℃have the optimized performance as the conductive additive with the lithium iron phosphate cathodes.
作者
黄少真
李忻达
李承献
林菊香
HUANG Shao-zhen;LI Xin-da;LI Cheng-xian;LIN Ju-xiang(Shenzhen Feimo Technology Co.,Ltd.,Guangdong Shenzhen 518100,China)
出处
《广州化工》
CAS
2023年第11期58-61,共4页
GuangZhou Chemical Industry
关键词
催化剂
碳纳米管
化学气相沉积
锂离子电池
电化学性能
catalysts
carbon nanotubes
chemical vapor deposition
lithium-ion batteries
electrochemical performance
