Chapter 1. Flexible all-solid state supercapacitors Chapter 2. Fiber/yarn based flexible supercapacitors Chapter 3. Flexible lithium ion batteries Chapter 4. Flexible sodium ion batteries Chapter 5. Flexible diversified batteries 5.1 Zinc ion batteries 5.2 Mg batteries 5.3 Alkaline batteries 5.4 Silver-Zinc batteries 5.5 Other flexible batteries Chapter 6. Flexible lithium sulfur batteries Chapter 7. Flexible fuel cells Chapter 8. Flexible nanodielectric materials with high permittivity for power energy storage Chapter 9. Flexible dye sensitized solar cells Chapter 10. Flexible perovskite solar cells Chapter 11. Flexible organic solar cells Chapter 12. Flexible quantum dot-sensitized solar cells Chapter 13. Flexible triboelectric nanogenerators Chapter 14. Flexible thermoelectric devices Chapter 15. Flexible electrodes for water-splitting sakriti opis