简介:美国Borden化学、Resolution功能产品(RPP)、Resolution特种材料公司(RSM)和Bakelite公司将在今年下半年合并成立全球最大的热固性树脂生产商。新公司将被命名为Hexion特种化学品公司,总部位于俄亥俄州首府哥伦布,在全球18个国家拥有86个工厂,雇员约7000人,年销售收入约40亿美元。Borden化学是世界上装订及捆扎树脂、特种粘合剂以及建筑化学甲醛产品的主要生产商。
简介:Theyolk-shellFe3O4@Cnanocubesweresuccessfullysynthesizedthroughcarbothermicreductionprocessfromcarbon-coateda-Fe2O3precursor.Theresultsshowthattheyolk-shellFe3O4@Cnanocubesareuniformlycoatedwithathincarbonlayer,andaclearcavityabout150nminwidthbetweenFe3O4coreandcarbonshellareformedduetothevolumeshrinkageduringthereductiontreatment.Theobtainedyolk-shellFe3O4@Cnanocubesexhibitexcellentcyclingstability(thedischargecapacityis709.7mAh/gafter100cyclesatthecurrentdensityof0.1C)andrateperformance(1023.4mAh/gat0.1C,932.5mAh/gat0.2C,756.1mAh/gat0.5C,405.6mAh/gat1C,and332.3mAh/gat2C,andmoreimportantly,whenthecurrentdensityfinallybacksto0.1C,acapacityof776.8mAh/gcanberestored).Theoutstandinglithiumstoragepropertiesmaybeattributedtotheuniqueyolk-shellstructures.