1results about How to "Overcome deformation" patented technology

This invention provides a silicon anode sheet and its preparation method. The silicon anode sheet includes: an active material layer containing silicon material, a conductive agent, and a fibrous binder; and a current collector disposed on the upper and lower surfaces of the active material layer, wherein the current collector is made of carbon felt material. According to the silicon anode sheet of this invention, on the one hand, the use of a fibrous binder in the active material layer can form a cross-linked bonding network, thereby effectively improving the flexibility of the electrode sheet and overcoming the deformation and stress problems caused by the volume expansion of the active material; on the other hand, the use of carbon felt material to make the current collector on the silicon anode sheet allows its rigidity to suppress electrode expansion, improve battery life, and its chemical properties to prevent electrolyte corrosion of the current collector, thereby effectively improving the battery's cycle performance.