3D Textured Composite Silicon Anode & Fluorinated Lithium Compound Electrochemical Cell

According to an embodiment of the present invention there is a cathode of an energy storage device. The cathode is made of Lithium Manganese Oxyfluoride (LMOF), with the approximate stoichiometry of LiMnOF. In some embodiments, the cathode is made of Lithium Manganese Oxyfluoride (LMOF), LiMnOF combined with a solid polymer electrolyte (SPE). Other materials such as conductive material and binders can be included in the cathode. Methods of making are disclosed. According to an embodiment of the present invention there is a composition of matter. The composition is made of Lithium Manganese Oxyfluoride (LMOF), with the approximate stoichiometry of LiMnOF combined with a solid polymer electrolyte (SPE). Other materials such as conductive material and binders can be included in the cathode. Methods of making are disclosed. The composition can be used as a cathode in an energy storage device. An energy storage device, e.g. a battery, is disclosed. The battery has a p+ type silicon (Si) substrate with one or more trenches. Each of the trenches has a trench bottom area with a textured active surface. In some embodiments, the textured active area is created by laser ablation. An anode is disposed on the textured active surface. An electrolyte is disposed on the anode. A cathode is disposed on the electrolyte. In some embodiments, a galvanic cycling causes the anode, electrolyte, and cathode materials to transform into battery internals that are used during normal operation of the device.