Composite electrode comprising embedded porous current collector and method of making same

The invention discloses a composite electrode comprising an embedded porous current collector and a method of making the same. A composite electrode for an electrochemical cell for cycling lithium ions may include a metal current collector having a three-dimensional porous structure defining an interconnected network of open pores and an electrode material disposed within the open pores of the current collector. An oxygen-containing reactive layer may be formed on a surface of the current collector and an electrode precursor mixture may be deposited thereon and dried to form a solid electrode material having a continuous structure within open pores of the current collector. The electroactive material particles and/or the conductive agent may interact with the oxygen-containing reactive layer on the metal current collector to form an oxygen-containing binder layer along the interface between the current collector and the solid electrode material. The electroactive material particles and the conductive agent ma