▎ 摘　　要

NOVELTY - High-power characteristic sodium-ion battery has a positive electrode, a negative electrode and an electrolyte, where the active material of the negative electrode is hard carbon material with abundant nano-pore canal and few oxygen-containing functional groups on the pore wall. USE - High-power characteristic sodium-ion battery for use in electrochemical energy storage system i.e. lithium-ion battery, rechargeable alkali metal battery. ADVANTAGE - The high power characteristic sodium ion battery is provided with rich nano-pore and pore wall oxygen-containing functional group such as low (carbon/oxygen ratio) as hard carbon material negative electrode, by reducing the orifice size, ensuring the rich in the nano-pore canal, which greatly promotes the diffusion rate of sodium ion in the pore-canal. The battery improves the sodium storage capacity of the existing hard carbon negative electrode material by adopting a porous carbon precursor, selecting a reasonable reducing gas source, regulating the concentration of carbon defects, and reducing the size of the pore, at the same time, optimize the rate performance and cycle stability to promote the commercialization of sodium-ion batteries.