用气纺丝法制备了氧化物复合碳纤维材料的前驱体,并通过惰性气氛800℃高温处理得到氧化物复合碳纤维纳米线。通过扫描电镜对所制得的纳米碳纤维进行显微结构分析,重点考察其作为锂离子电池负极材料的电化学性能。结果表明:CF-Sn O_2-Co_...用气纺丝法制备了氧化物复合碳纤维材料的前驱体,并通过惰性气氛800℃高温处理得到氧化物复合碳纤维纳米线。通过扫描电镜对所制得的纳米碳纤维进行显微结构分析,重点考察其作为锂离子电池负极材料的电化学性能。结果表明:CF-Sn O_2-Co_3O_4碳纤维作为负极主材组装的电池具有最佳的充放电性能,初次放电容量可达到1490 m Ah/g,50次循环后比容量保持在599 m Ah/g,电化学阻抗最小,倍率性能最好。因此,CF-Sn O_2-Co_3O_4碳纤维有希望成为一种性能优良的锂电池负极新材料。展开更多
The present study investigates the effect of the addition of nanoparticles into epoxy resins as the matrix on the impact absorbed energy of CFRP （carbon fiber reinforced polymer）. Impact absorbed energy is one of th...The present study investigates the effect of the addition of nanoparticles into epoxy resins as the matrix on the impact absorbed energy of CFRP （carbon fiber reinforced polymer）. Impact absorbed energy is one of the main properties to evaluate the CFRP＇s performance for transportation and aerospace structures. Two types of nanoparticle, namely nanofibers and nano-silica beads, were added into the epoxy resin to improve the impact absorption capacity of the CFRP. Two modified additives and conventional epoxy resins were quantitatively compared. The impact test results showed that impact absorbed energy for nanofibers was higher than nano-silica beads, and nanofibers as the additive promoted about 11% of impact absorbed energy compared with neat epoxy resin.展开更多
文摘用气纺丝法制备了氧化物复合碳纤维材料的前驱体,并通过惰性气氛800℃高温处理得到氧化物复合碳纤维纳米线。通过扫描电镜对所制得的纳米碳纤维进行显微结构分析,重点考察其作为锂离子电池负极材料的电化学性能。结果表明:CF-Sn O_2-Co_3O_4碳纤维作为负极主材组装的电池具有最佳的充放电性能,初次放电容量可达到1490 m Ah/g,50次循环后比容量保持在599 m Ah/g,电化学阻抗最小,倍率性能最好。因此,CF-Sn O_2-Co_3O_4碳纤维有希望成为一种性能优良的锂电池负极新材料。
文摘The present study investigates the effect of the addition of nanoparticles into epoxy resins as the matrix on the impact absorbed energy of CFRP （carbon fiber reinforced polymer）. Impact absorbed energy is one of the main properties to evaluate the CFRP＇s performance for transportation and aerospace structures. Two types of nanoparticle, namely nanofibers and nano-silica beads, were added into the epoxy resin to improve the impact absorption capacity of the CFRP. Two modified additives and conventional epoxy resins were quantitatively compared. The impact test results showed that impact absorbed energy for nanofibers was higher than nano-silica beads, and nanofibers as the additive promoted about 11% of impact absorbed energy compared with neat epoxy resin.
