FePO4 nanoparticles embedded in a large mesoporous carbon matrix as a high-capacity and high-rate cathode for lithium-ion batteries

► Self-made nano-CaCO3 templated LMC as a novel supporting matrix for FePO4 cathode. ► The 3D porous structure of LMC is well retained in LMC-FePO4 nanohybrid. ► Its reaction kinetics of lithium insertion/extraction is significantly improved. ► Markedly higher capacities and rate capability by virtue of its structure superiority.