Rechargeable lithium cell having an anode comprised of...

Details Rechargeable lithium cell having an anode comprised of... Rechargeable lithium cell having an anode comprised of...

2007-03-13

2007-03-13

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231950, C429S212000

Reexamination Certificate

active

10069011

ABSTRACT:
An anode for a rechargeable lithium cell comprises carbon nanotubes that contain within them an element that can form alloys or compounds reversibly with lithium over a range of compositions. The element within the nanotubes may be aluminum or tin. These carbon nanotubes are bound together to form a coherent layer with a polymeric binder, such as a polymer of viniylidene fluoride. A cell with such an anode should have improved capacity and improved reversibility, because the nanotubes provide a stabilizing framework for the alloy.

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“Carbon nanotubule membranes for electrochemical energy storage and production”, Che et al., Nature 393, 346-349 (May 28, 1998).

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