Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Secondary battery










Image Number 5 for United States Patent #6884546.

Provided is a secondary battery in which high energy density can be obtained and charging/discharging cycle characteristic can be improved. A positive electrode (13) and a negative electrode (15) are stacked with a separator (16) interposed therebetween, and are enclosed inside an exterior can (11) to which an electrolyte is injected. The negative electrode (15) contains a negative electrode material capable of occluding/releasing lithium in an ionic state. Thereby, lithium metal precipitates in the negative electrode (15) in a state where the open circuit voltage is lower than the overcharge voltage. In other words, lithium is occluded in an ionic state in a negative electrode material capable of occluding/releasing lithium in the beginning of charging, and then lithium metal precipitates on the surface of the negative electrode material thereafter during charging. The amount of precipitation of lithium metal is preferable to be from 0.05 to 3.0 times, both inclusive, the ability of charging capacity of the negative electrode material capable of occluding/releasing lithium. Thereby, a high energy density and an excellent cycle characteristic can be obtained.








 
 
  Recently Added Patents
Buried object detection in GPR images
Single-stage PFC converter with constant voltage and constant current
Light-emitting diode devices
Image processing apparatus, image registering method, program causing computer to execute image registering method, and recording medium in which program is recorded
Communication network management system, method and program, and management computer
Bootstrap gate driver
Method of providing user-tailored entertainment experience at hospitality location and hospitality media system thereof
  Randomly Featured Patents
Outboard flushing adaptor
Syndiotactic styrene polymers
7-ethoxy-5-fluoromethyl-1,2,4-triazole[1,5-a]-pyrimidine-2-sulfonamindes
Method for production of benzene halilde
Lens positioning system
Apparatus and method for conveying a product
Heating heat exchanger with electric heat emitter
Rich fume incinerator
Forced draft direct vent type room heater
Portable golf club stand