All solid state rechargeable batteries are promising for meeting the challenges of high safety and high energy density for future energy storage. To address the challenge of interfacial contact between a solid electrolyte and electrode with a cost-efficient solution, we demonstrate a novel Cathode-Supported Solid Electrolyte Membrane (CSSEM) framework for advanced all solid state Li ion batteries. The solid electrolyte is directly cast on the cathode layer to enhance the wetting ability of the solid electrolyte onto the cathode, reinforcing interfacial adhesion.