Societal and environmental concerns for carbon reduction have opened avenues for the development of renewable energy sources and energy storage means (i.e., fuel cell, battery, solar cell, wind, etc.). Electrochemical energy storage, especially battery, plays an important role in the drive to improve electrical energy storage for applications ranging from portable electronics to electric vehicles to grid stabilization as well as renewable energy storage, due to batteries’ high energy density, simplicity, reliability, and potential for favorable performance/cost ratio. Lithium rechargeable chemistry has dominated portable electronic market and will be widely adopted in hybrid electric vehicles, plug-in hybrids, limited-range battery electric vehicles and grid storage. However, Li-ion batteries are still facing a number of challenges including high cost (~$150/kWh), low energy density (250kWh/kg), safety (many recalls and explosions), material availability, manufacturing, recycling etc. Electrochemical Energy Laboratory (EEL) was established by Prof. Yan Wang in 2010 to address such challenges. In the past 14 years, EEL has contributed significantly to developing new electrode materials, innovative manufacturing methods and transformative recycling methods to overcome the above issues. In addition to battery research, EEL is also researching materials, methods or processes to enable better recycling technologies and industry sustainability.