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. (a) Typical discharge
curve of LiCoO2 AND its
(b,c) lattice parameter
CHANGE
E-commerce Issues
RCCL operates Web sites with customer booking capabilities for both Royal Caribbean and Celebrity Cruises. The two Web sites allow customers to experience what a RCCL cruise would be like, including a virtual tour of the various ships. RCCL is using the latest information technology software to manage its operations. Theses software packages enable the company to optimize decis
4. gab between the poor and the rich
About 100,000 people in India's milrieoneeo (assets over $ 1,000,000), live, and that number is increasing rapidly. India's rapid economic growth, soaring real estate values and resulting property of the Indian rich person has contributed to further disadvantage.
Outstanding college graduates flood the salary received 30,000 to 40,000 U.S. dollars, engi
00 million Indians have no mains electricity at all. While 80% of Indian villages have at least an electricity line, just 44% of rural households have access to electricity. Acity. Acity.a sample of 97,882 households in 2002, electricity was the main source of lighting for 53% of rural households compared to 36% in 1993.Some half of the electricity iecttolen, compared with 3% in China. Thecttolen
discharging
Direct connect with capacity
Ex) LiCoO2
Collector
Connection with exterior load
Commonly using Metal
Ex)Al, Cu.
Substrate
Power of Si device → Si
Ex) Si, Glass, Polymer
cf) Polymer substrate → Flexible
Recent R&D Trend
New component materials
Anode : Stability, Reversibility, Low expansion rate
High Melting Temp. of Li(180.6℃) are
nee
Li-ion is the best power storage we get
- Good : Light weight, High capacity,
Low self-discharge
- Bad : Safety, Aging, Deep discharging
1. What is Micro Fuel Cell (MFC)?
2. MFC’s Advantage
3. Kind of MFC
4. Compare MFC
5. MFC’s Now & Future
♣ Fuel Cells?
Electrochemical cell that converts a source fuel into an electrical current.
Fuel Cell has strength in..
1. Hig
discharge coefficient)라고 한다.
경험적 유량계수는 일정하지 않고 채널의 형상과 레이놀즈 수의 영향을 받는 함수로 표현된다.
벤튜리에 대한 반-경험적 유량식이 실제 유량을 산출하기 위해 다음과 같이 쓰일 수 있다.
여기서 M은 접근 요소 속도 (the velocity of approach factor)이고 실험적으로 다음과 같
Graphite
Stacked graphene layers, crystalline.
0.335 nm spacing betwwen planes.
About 10% volume expansion upon
Li intercalaion
Theoretical maximum capacity is
372mAl/g(LiC6)
Coating by Conductive Materials
The major effects and advantages
No classical binder is required to prepare mechanically and electrochemically stable anodes.
Irreversible capacity in the first cycle
to the competing companies. Tesco is rated higher in company evaluation such as customer satisfactory rate and environment management rating. A company with better performances will have an excellent organizational supporting processes and human resources management is the decisive variable which decides the capacity of the modern industries. This is why we decided to pick Samsung Tesco.
Discharge)을 사용하여 흑연 음극 상에 형성시킨 탄소덩어리를 TEM으로 분석하는 과정에서 가늘고 긴 대롱 모양의 탄소 나노튜브를 발견
· 흑연판이 나노크기의 직경으로 둥글게 말린 형태이며, 그 직경이 나노미터수준으로 극히 작은 영역의 물질
- 탄소 나노튜브는 구조에 따라 한 겹으로 된 단일벽