1. Introduction<br>2. Silicon Electrochemistry: Towards a Low-Carbon Economy<br>3. Historcal Overview of Silicon Production<br>4. Physical and Chemical Properties of Silicon<br>5. Refining of Silicon: From Metallurgical-Grade to Electronic-Grade<br>6. Silicon Electrowinning and Electrodeposition of Thin Layers<br>7.Photoelectrochemistry and Nanogravimetry of Si and Si-oxide Electrodes<br>8. Electro-deoxidation of Solid Compounds in Molten Salts<br>9. Voltammetry and Basic Reactions of Silicon Electrode in Molten CaCl2<br>10. Si-SiO2 Electrode in Molten CaCl2<br>11. Formation of Silicon Oxide Layer<br>12. In situ Studies of SiO2 to Si Conversion<br>13. Molten Oxide Electrochemistry at Ultra-High Temperatures<br>14. Silicon Surface Structuring<br>15. Electrochemical Si Surface Structuring and Formation of Black Si in High Temperature Molten Salts<br>16. Silicon Compositions: Perspectives for Semiconductor Production<br>17. Silicon Photo-Electrodes for Water Splitting and Their Protection<br>18. Conclusion, Outlook, Challenges<br>