lithiumions storage.
Prevent the graphite anode from expanding by lithiumion 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
[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 Lithiumion battery]
[lower internal resistivity]
[advantageous
instrument composition
-Electric furnace
Temperature range:
25°C~1500°C
Heat speed :
Maximum 200°C/min
*Separate Electric furnace and other system like Electronic scale
-Because Electric furnace temperature is very high
so we need to protect other system.
instrument composition
-Electric furnace
Temperature range:
25°C~1500°C
Heat speed :
Maximum 200°C/min
*N
Experimental Setup
Three electrode cell Working electrode : Composite electrode
active material + conducting material + binder
LiCoO2
carbon PVDF
Counter electrode & reference electrode : lithium foil
Electrolyte : Li salt IN non-aqueous solvent
Li salt : LiPF6, LiBF4, LiClO4…
Solvent : EC, PC, DMC, DME…
Lab. of Energy Conversion & STORAGE Materials
Fig.
Structure of Thin film batteries
Encapsulation
Direct connect with battery’s stability
Protection the anode from exterior
Ex) Parlylene, Cr, V
Anode
Desorbs electrons as discharging
Ex) Li, SnO2, C
Electrolyte
High density of charge carrier
High density of vacancy & interstitial site
Low activation Energy of hopping
Cathode
Absorb electrons as discharging
Direct connect w
■ 조사 서론
1. LG Battery 선정 이유
환경 마케팅 수업을 듣고 있는 학생으로서 가장 먼저 주제를 ‘무엇으로 해야 하는가‘에 대한 고민의 결과로 대부분의 사람들이 갖고 있는 휴대폰이나 디지털 카메라에 들어가는 배터리를 생각했고, 이러한 배터리도 발전해 오면서 리튬이온배터리라는 환경친화
Product Name
Eneloop Mobile Buster KBC-L2B
Price
₩59,000~ ₩63,000
Function
Portable smart phone charger
Portable tablet PC charger
Company
SANYO Inc.
Taken over by Panasonic
Practicable Product
Apple : I-phone, I-pad
Android : Galaxy series, Sony,
Packaging content
1x Mobile Booster KBC-L2B
1x Charger input USB cable
1x Micro USB attachment
1x AC a
2.2. 구성요소
구성요소는 크게 전해질, 전극, 이온교환막, 쌍극판, 펌프, 탱크가 있다.
2.2.1. 전해질
각 redox ion couple를 함유한 전해질은 셀 내에 저장되어 있지 않고, 외부의 탱크에 액체 상태로 저장되어 있으며 충•방전 과정 중에 펌프를 통하여 셀 내부로 공급된다. 전해질 용액은 농도와 양의