ABSTRACT

Energy storage plays a key role in the context of future technological requirements and increasing world population. On the one hand, a rapid growth of renewable sources is envisioned in the next years in order to cover increasing fractions of the nal energy generation portfolio, thus achieving a sustainable energy production. However, the penetration of renewable energy sources is slowed down by their characteristic intermittency and uctuating behavior. These issues can be addressed only via the implementation of improved storage technologies in the electricity networks. On the other hand, efcient and affordable energy storage is needed to power the myriad portable consumer electronic devices (cell phones, PDAs, laptops, or for

6.1 Introduction .................................................................................................. 131 6.2 Li-Ion Batteries and Their Components ....................................................... 133

6.2.1 Electrode Materials ........................................................................... 134 6.2.1.1 Intercalation Materials ....................................................... 135 6.2.1.2 Alloy Materials .................................................................. 137 6.2.1.3 Conversion Materials ......................................................... 137

6.2.2 Electrolytes and Separators .............................................................. 138 6.3 Electrospinning in the Preparation of Electrodes for Li-Ion Batteries ......... 139

6.3.1 Nanostructured Positive Electrode Materials ................................... 141 6.3.2 Nanostructured Negative Electrode Materials ................................. 153 6.3.3 Nanober-Based Separators and Electrolytes .................................. 159

6.4 Technical Challenges and Perspectives ........................................................ 162 6.4.1 Electrospinning for Next-Generation Sodium-Ion Batteries ............ 162 6.4.2 Electrospinning for Lithium-Sulfur Batteries ................................. 163

6.5 Chapter Summary ......................................................................................... 164 References .............................................................................................................. 165

implantable medical applications, such as pace makers), as well as future hybrid and/or electric vehicles, which are central to the reduction of CO2 emissions arising from transportation. In these scenarios, the development of clean and efcient energy storage systems with improved performance, availability, durability, safety, and reduced cost becomes crucial.