THE NEXT GENERATION OF BATTERY FOR HIGH ENERGY DENSITY AND
POWER DENSITY
Professor Feiyu KangDepartment of Material Science, Tsinghua UniversityBeijing 100084, P. R. ChinaPhone:+86-10-6277-3752; Fax:+86-10-6277-3752; Email: [email protected]
Main Principle Investigators:
Professor Gregory C. RutledgeDepartment of Chemical Engineering, Massachusetts Institute of Technology77 Massachusetts Avenue, Room 66-550Cambridge, MA 02139, USAPhone: +1-617-253-0171; Fax: +1-617-258-5766; Email: [email protected]
Professor Alan H. WindleDepartment of Materials Science & Metallurgy University of Cambridge Telephone: +44 1223 334323; Fax: +44 1223 335637 Email: [email protected]
Co-Principle Investigators:
Dr. Ying Yang Department of Electrical Engineering, Tsinghua UniversityBeijing 100084, P. R. ChinaPhone:+86-10-6278-3543; Fax: :+86-10-62792303; Email: [email protected]
Professor T. Alan HattonDepartment of Chemical Engineering, Massachusetts Institute of Technology77 Massachusetts Avenue, Room 66-309Cambridge, MA 02139, USAPhone: +1-617-253-4588; Fax: +1-617-253-8723; Email: [email protected]
Asymmetric Supercapacitor
△EAC △EMnO2 Negative CAC: 80 F/g
Positive CMnO2: 310 F/g
Energy density:
35-40 Wh/Kg
I = 0.5 A/g; 0.1 mol L-1 Ca(NO3)2
C = 45 F/g
1. FY Kang, BH Li, CJ Xu. Recent Progress on Manganese Dioxide Based Supercapacitors, Journal of Materials Research, 2010, Accepted.
2. Chengjun Xu, Baohua Li, Hongda Du, et al. Electrochemical properties of nanosized hydrous manganese dioxide synthesized by a self-reacting microemulsion method. J. Power Sources , 2008,180: 664-670.
Electrode CMnO2 (F/g, 5mV/s)
MnO2/CNF-5 568
MnO2/CNF-15 331
MnO2/CNF-30 328
MnO2/CNF-60 188
CNF 4
∫Δ= dVVI
VmvC )(1
Average specific Capacitance calculated by
0.0 0.2 0.4 0.6 0.8 1.0-‐0.004
-‐0.003
-‐0.002
-‐0.001
0.000
0.001
0.002
0.003
0.004
Current D
ensity (A/cm
2 )
P otentia l (V vs .S C E )
C NF MnO 2/C NF -‐5 MnO 2/C NF -‐15 MnO 2/C NF -‐30 MnO 2/C NF -‐60
Morphology and Electrochemical performance of MnO2/CNF
Amorphous structure of MnO2/CNF nanocomposites
Conformal and uniform MnO2 coating on CNF;MnO2 Coating thickness increases with
increasing reaction time at the expense of CNF
Li|LiPF6|Fiber 200mA/g
Ø Lin Zou, Lin Gan, Ruitao Lv, Mingxi Wang, Zheng-hong Huang, Feiyu Kang, and Wanci Shen. A film of porous carbon nanofibers that contain Sn/SnOx nanoparticles in the pores and its electrochemical performance as an anode material for lithium ion batteries. Carbon.2011,49(1): 89-95
Ø Y Yang, Z. Guo, H. Zhang, YY Shi, FY Kang, TA Hatton and GC Rutledge. A self-supported porous carbon nanofibers that contain Fe3O4 nanoparticles in the pores and its electrochemical performance as an anode material for lithium ion batteries. Preparation to be submitted.
New Anode Materials for Lithum Ion Battery
Composite Electrospun Membrane for Li-ion Battery Separator
PAN PVDF PMMA Polyimide & Various structures
Polyimide electrospun membrane
Impedance spectroscapy of PVDF membrane First charge and discharge cycle of PVDF membrane
Thank You For Your Attention!