Conversion-Type Electrodes for Rechargeable Lithium Based Batteries: Case Studies of Iron Based Conversion Materials for Lithium-Ion Batteries and Molybdenum Disulfides for Lithium-Sulfur Batteries

Conversion-type materials are very promising candidates to replace current intercalation-type electrode materials for lithium rechargeable batteries due to the opportunity for high theoretical capacity and low cost. In this chapter, we present representative case studies involving iron based conversion materials for lithium-ion batteries and molybdenum based materials for lithium sulfur batteries. Approaches to characterize and address challenges for conversion materials are described, including phase evolution and amorphization upon electrochemical reduction, and solid electrolyte interface formation and evolution.