Stanford University, verified energy efficiency of new nano-lithium sulfur / silicon cells
Researchers from Stanford University in the United States February 27, 2010 announcement to verify the energy efficiency of new nano-structured lithium sulfur / silicon rechargeable battery system. RN873，GW240
To Stanford University researchers led by Yi Cui validate the concept of non-lithium metal, this new nano-lithium sulfur / silicon cells by a sulfur atom lithium (Li2S) / cathode composite macroporous carbon and Silicon (Si) nanowire anode composition, have a high energy unit.
The new theory of battery units of energy per kg Wh 1550-1, is now based on LiCoO2 cathode and graphite anode in lithium-ion battery (~ 410 Wh kg-1) is about 4 times. The research team based on the material of the active electrode was made through experiments units initial rate of energy 630 Wh kg-1.
The nano-structure of two electrodes in a lithium-ion batteries to overcome with the use of silicon sulfide and related issues, including conductivity, Sony VGP-BPS8 , major changes in the structure and size too large. Results of the development of new battery in the Elsevier journal “Nano Letters” publication.
Much research is the development of silicon as anode material because of its high theoretical charge capacity (4,200 mAh g-1: more than 10 times higher than the graphite electrodes, and compared with a variety of nitride and oxide are much higher), and rejection of a low potential.