Advances in high-capacity Li2MSiO4 (M = Mn, Fe, Co, Ni, ...) cathode materials for lithium-ion batteries

The orthosilicate, Li 2 MSiO 4 (M = Mn, Fe, Co, Ni, ...), is a competitive cathode material for next generation high-capacity (∼330 mA h g −1 with a possible 2 Li + extraction per formula unit) rechargeable lithium-ion batteries. It is an alternative to other polyanionic compounds because the raw materials of Fe/Mn-containing oxidates and silica are abundant, cost effective, very safe, environmentally friendly, and its Si-O bond is at least as stable as other polyoxyanion groups with an excellent cycling performance. This review highlights the research progress related to the Li 2 MSiO 4 cathode materials in terms of the phase transition of the structure, synthetic methods and techniques for improving the electrochemical performance. This review highlights the high-capacity Li 2 MSiO 4 (M = Mn, Fe, Co, Ni, ...) cathode materials for lithium-ion batteries.