Charging of insulating substrates is a common problem during electron beam lithography (EBL) exposure, which deflects the beam and distorts the pattern.A lot of efforts have been done in order to over
Two-dimensional (2D) carbon nanosheets (CNSs), which consist of few-to multi-layer of graphene sheets, have attracted great interest in many fields because of their high surface area, high height/thic
A large amount of studies have already focused on the mechanisms of silk self-assembly and the nanoscale structure formation in silk-based biomaterials.However, there were several key issues should be
第三代锂离子电池的发展趋势是采用高容量的纳米硅负极以及富锂正极材料.纳米硅负极的主要问题是高容量带来的显著的体积膨胀,在电池工艺上带来较大的挑战,目前以限制电极容量的办法开始小范围应用.
实验通过溶剂热结合酯化反应合成了Co掺杂的一系列LiFe1-xCoxPO4/C (x=0,0.005,0.01,0.015,0.02 and 0.025)纳米片,乙二醇做溶剂.SEM显示所得样品为片状,经TEM显示所得纳米片在b轴方向很短,主要沿(101)晶面的[001]晶向生长,这样缩短了b轴长度,有利于锂离子扩散.电化学测试显示掺杂量为x=0.01的样品LiFe0.99Co0.01PO4/C展
In comparising with the graphene sheets with the lateral size ranged in micrometer region, graphene quantum dots (GQDs, the graphene sheets with lateral sizes less than 100 nm) assume unique electron
Graphene is a one-atom-thick planar sheet of sp2-hybridized carbon atoms tightly packed in a two-dimensional honeycomb crystal lattice.It has many excellent properties, such as high mobility and adjus
An improved Hummers method was used to the preparation of exfoliated graphite oxide(GO), and graphene with high-surface area was obtained after chemical reduction of GO by hydrazine hydrate.A stable s
Graphene has attracted intense interest because of its superb properties, such as high mobility and optical transparency.Meanwhile, depositing graphene on appropriate substrates is one of the main obs
Supercapacitors have sparked enormous interest in the field of electrical energy storage devices due to their high power density, long cycle life, wide operating temperature range, and short charging