M. Stanley Whittingham, PhD, SUNY Distinguished Professor, Member, National Academy of Engineering, Director, NECCES EFRC at Binghamton, SUNY at Binghamton
Fifty years ago, a rechargeable battery achieving an energy density exceeding 100Wh/kg at room temperature was just a dream. Today, cells are exceeding 250Wh/kg. These cells have revolutionized electronic devices, have made EVs feasible, are dominating grid storage and enabling renewable energy. Yet, the components of these intercalation-based cells have not changed significantly since the 1990s, and the cells still do not exceed 25% of theoretical capacity. Some of the challenges that need to be addressed to double the energy density will be discussed.