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: fykang@tsinghua.edu.cn 

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: rutledge@mit.edu

Professor Alan H. WindleDepartment of Materials Science & Metallurgy University of Cambridge Telephone: +44 1223 334323; Fax: +44 1223 335637 Email: ahw1@cam.ac.uk

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: yingyang@tsinghua.edu.cn

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: tahatton@mit.edu

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!