用磁控溅射方法沉积制备的Ag/Ti-W/Ni-Cr三层复合电极薄膜上的Ag膜在工艺中容易脱落,而SiO2衬底上的Ag膜则具有良好的粘附性能。X射线衍射方法常用来检测薄膜中的应力,用X射线衍射技术(XRD)衍射峰位置的移动可判断膜中出现的是压应力还...用磁控溅射方法沉积制备的Ag/Ti-W/Ni-Cr三层复合电极薄膜上的Ag膜在工艺中容易脱落,而SiO2衬底上的Ag膜则具有良好的粘附性能。X射线衍射方法常用来检测薄膜中的应力,用X射线衍射技术(XRD)衍射峰位置的移动可判断膜中出现的是压应力还是张应力。实验中,用XRD对三层复合薄膜作了薄膜的应力分析,确定在160℃溅射沉积后,Ag膜中存在压应力,该应力使Ag膜(111)晶面间距(d)比SiO2衬底上的Ag膜晶面间距小约0.35%。采用500℃,15 min N2热退火的方法,可使三层复合膜中Ag膜的XRD峰位回复到与SiO2衬底上Ag膜相同的谱峰位置,说明采用热退火的方法可有效消除复合膜的应力,防止Ag膜的脱落。展开更多
Metal oxides, such as SnO2, Fe2O3, Fe3O4, CoO, Co3O4, NiO, CuO, Cu2O, MnO, Mn3O4, MnO2. etc. , are promising anode materi- als for lithium-ion batteries （LIBs） due to their high capacity and safety characteristics. ...Metal oxides, such as SnO2, Fe2O3, Fe3O4, CoO, Co3O4, NiO, CuO, Cu2O, MnO, Mn3O4, MnO2. etc. , are promising anode materi- als for lithium-ion batteries （LIBs） due to their high capacity and safety characteristics. However, the commercial utility of metal oxide anodes has been hindered to date by their poor cycling per- formance. Recent study shows that metal oxide/ graphene composites show fascinating cycling per- formance as anode materials for lABs. In this re- view, we summarize the state of research on prepa- ration of metal oxide/graphene composites and their I.i storage performance. The prospects and future challenges of metal oxide/graphene compos- ites anode materials for lABs are also discussed.展开更多
文摘用磁控溅射方法沉积制备的Ag/Ti-W/Ni-Cr三层复合电极薄膜上的Ag膜在工艺中容易脱落,而SiO2衬底上的Ag膜则具有良好的粘附性能。X射线衍射方法常用来检测薄膜中的应力,用X射线衍射技术(XRD)衍射峰位置的移动可判断膜中出现的是压应力还是张应力。实验中,用XRD对三层复合薄膜作了薄膜的应力分析,确定在160℃溅射沉积后,Ag膜中存在压应力,该应力使Ag膜(111)晶面间距(d)比SiO2衬底上的Ag膜晶面间距小约0.35%。采用500℃,15 min N2热退火的方法,可使三层复合膜中Ag膜的XRD峰位回复到与SiO2衬底上Ag膜相同的谱峰位置,说明采用热退火的方法可有效消除复合膜的应力,防止Ag膜的脱落。
基金financially supported by the National Science Foundation for Distinguished Young Scholar(50725208)National Natural Science Foundation of China(11079002&51272012)Specialized Research Fund for the Doctoral Program of Higher Education(20111102130006)
文摘Metal oxides, such as SnO2, Fe2O3, Fe3O4, CoO, Co3O4, NiO, CuO, Cu2O, MnO, Mn3O4, MnO2. etc. , are promising anode materi- als for lithium-ion batteries （LIBs） due to their high capacity and safety characteristics. However, the commercial utility of metal oxide anodes has been hindered to date by their poor cycling per- formance. Recent study shows that metal oxide/ graphene composites show fascinating cycling per- formance as anode materials for lABs. In this re- view, we summarize the state of research on prepa- ration of metal oxide/graphene composites and their I.i storage performance. The prospects and future challenges of metal oxide/graphene compos- ites anode materials for lABs are also discussed.
