by lithium ion intercalation
Si has theoretical capacity of 4200mAh/g
Due to it’s large volume change, pulverization can be occurred.
Silicon has high-capacity but poor cycle stability
Carbon has low-capacity but good cycle stability
So silicon/carbon composites can have higher capacity than single carbon anode,
and better cycle stability than single silicon anode.
[Anode material]
The potential that is close the standard electrode potential of Li.
High energy density per volume & weight
Excellent cycle stability (Coulomb effeciency)
Have to endure rapid charging or discharging
Stability
.
.
.
[High Voltage]
[Pollution-Free]
[long cycle life]
[No Memory Effect]
[Safer than Lithium ion battery]
[lower internal resistivity]
[advantageous
2. 본 론
고분자의 기능성과 그것을 응용하고 있는 사례들은 너무나도 많다. 그 중에서 몇가지 관심을 가질 수 있는 기능성 고분자 필름에 대해서 조사하고 정리를 해 보았다. 포장 필름과 광학 필름에 대해 알아보고, 그에 대한 각자의 관심이 있는 분야을 알아보자.
1. 포장 필름
1) 포장의 기능
leads to an increase in the gold nanorod yield and greatly improves control over the aspect ratio. Contrary to the results obtained with citrate-capped Au nanoparticle seeds, when CTAB is used during borohydride reduction of HAuCl4, single crystalline seeds are obtained, which are also smaller in size. One important piece of evidence for the valuable role played by AgNO3 as an additive is that, e
Ge is an indirect band gap semiconductor with smaller energy difference between indirect gap and direct gap, and smaller effective masses for electron and hole pairs.
Small ionic radius difference between Ge ion and Zn ion.
These characteristics lead to the expectation that it is much easier to change the electronic structure around the band edge.
- The effects of doping and substrat