LiFePO_4 Nanoparticles Embedded in a Nanoporous Carbon Matrix: Superior Cathode Material for Electrochemical Energy-Storage Devices

摘要

Considerable attention has been focused on electric vehicles (EVs) and hybrid electric vehicles (HEVsj in an attempt to relieve the pressure from increased oil prices and environmental issues. High-performance energy-storage devices with both high energy and high power densities are essential to such vehicles. Amongst all the commercially available devices, lithium-ion batteries (LIBs) currently represent the state-of-the-art technologyin high-energy batteries, and they have occupied a prime position in the market place to power portable electronic devices, such as laptops, personal digital assistants, and cellular phones.However, for use as power supplies for EVs and HEVs, it is still a challenge to achieve the same high power densities using LIBs as are currently achieved with supercapacitors.