Advantages 95 High theoretical specific capacity Li22Sis-4200 mAh/g Low discharge potential plateau 0.4 V versus Lit/Li-high working voltage,leading to high energy density in a full LIB Environmentally friendly ·Low toxicity High abundance (the 2nd most abundant element in the earth's crust) 66 Advantages • High theoretical specific capacity Li22Si5—— 4200 mAh/g • Low discharge potential plateau ≈ 0.4 V versus Li+ /Li —— high working voltage, leading to high energy density in a full LIB • Environmentally friendly • Low toxicity • High abundance (the 2 nd most abundant element in the earth’s crust)