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不同气氛下裂解含苯环聚硅氧烷制备锂离子电池Si-O-C复合负极材料的电池性能研究 被引量:2
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作者 刘相 谢凯 +1 位作者 郑春满 王军 《物理学报》 SCIE EI CAS CSCD 北大核心 2011年第11期711-716,共6页
在惰性气氛Ar和还原性气氛H2中通过高温裂解含苯环的聚硅氧烷分别制备了硅氧碳化物Si-O-C复合负极材料,并且采用了元素分析element analysis、广角粉末X射线衍射XRD、傅里叶激光拉曼光谱Raman等手段表征了二者组成和结构的差别.实验发现... 在惰性气氛Ar和还原性气氛H2中通过高温裂解含苯环的聚硅氧烷分别制备了硅氧碳化物Si-O-C复合负极材料,并且采用了元素分析element analysis、广角粉末X射线衍射XRD、傅里叶激光拉曼光谱Raman等手段表征了二者组成和结构的差别.实验发现,在H2气氛中裂解制备的Si-O-C复合负极含有较高的可逆、较低的不可逆容量,而且可逆容量随温度的增加而增长.其中H2气氛中1000℃情况下制备的Si-O-C复合负极的可逆容量622mAh/g,首次库仑效率59%.Si-O-C复合负极的不可逆容量与氧的含量相关,可逆容量可能与碳含量及碳结构,以及SiOC中硅的结构相关.在H2气氛中制备的Si-O-C负极材料是一种潜在的锂离子电池的负极材料. 展开更多
关键词 硅氧碳化物 负极材料 锂离子电池
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Improvement of Impact Absorbed Energy of CFRPs on Adding the Nanoparticles into Epoxy Resins
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作者 Tsung-Han Hsieh Chih-Hsiang Liang 《Journal of Chemistry and Chemical Engineering》 2014年第7期692-697,共6页
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
关键词 Carbon fiber nanoparticle additive impact absorbed energy.
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