The porous flower-like nano-structure SnO2 powders are successfully synthesized at 160 ℃ for 12 h by hydrothermal method,and followed by being heated at 500 ℃ for 3 h to be completely oxidized.The cha
The spherical-like and honeycomb LiCe0.1Ca0.8TiO3 particles are successfully synthesized by sol-gel and spray-drying combined with following pyrolysis processes.The P(VDF-HFP)-based composite polymer
Pt-based nanomaterials are considered as the most effective electrocatalysts for direct methanol fuel cells (DMFC)[1].Herein,graphene supported binary PtPd (PtPd-G) and ternary PtPdRu (PtPdRu-G) nanoc
锂硫电池具有比容量比能量高,毒性低,成本低等优点,但锂硫电池的使用过程中硫的导电性差,多硫化锂易溶解于有机电解液等问题严重影响了它的发展.石墨烯比表面积高,导电性优良,通过氧化石墨烯和多硫化钠进行氧化还原反应制备石墨烯包裹硫正极材料,可增强正极材料的导电性,限制多硫化锂的扩散溶解,发展前景可观.使用石墨烯包裹硫制备正极材料,既可增强锂硫电池正极材料的导电性,又能够限制多硫化锂的扩散溶解.相比一些传
Shewanella livingstonensis Acl0,a psychrotrophic bacterium isolated from Antarctic seawater,is able to grow well at low temperatures close to 0℃.The whole genome sequence of the bacterium was analyzed
In this manuscript,NaAlg-g-Poly(NVP-co-NIPAAm) were synthesized by a free radical grafting polymerization with microwave radiation,the structure and morphologies of NaAlg-g-poly(NVP-co-NIPAAm) were ch
为了研究环氧树脂的不同长度脂肪链结构因素对其固化动力学和固化物性质的影响,我们合成了两种以联萘环结构为分子骨架,以酯键链接两条对称的柔性脂肪链结构的环氧树脂,并通过核磁共振氢谱(1H-NMR)、核磁共振碳谱(13C-HMR)和红外光谱(IR)对其结构进行了表征.借助示差扫描量热法(DSC)对环氧树脂与4,4-二氨基二苯甲烷(DDM)固化体系的主要固化反应动力学参数进行了推导计算,利用外推法计算了R