| 摘要 |
A secondary battery negative electrode material. The material comprises a framework, a chelation/adsorption group and an active substance. The framework does not participate in electrochemical reaction, and only provides a carrier for the chelation/adsorption group; the chelation/adsorption group contains atoms such as N, S, P, O having lone pair electrons in outer electrons, and can form a chelated or chemical adsorption bond (represented by an iminodiacetic acid chelated group in the figure) with bivalent and polyvalent metals; the active substance is bivalent or polyvalent metal ions that can be reduced into lower valence states. During charging, the metal ions used as the active substance are reduced into a lower valence state or a metal elemental state; during discharging, the metal ions are reversely generated and form a chelated or chemical adsorption bond with the chelation/adsorption group. The negative electrode material can be used with a plurality of positive electrode materials to form a battery. The battery is expected to be applied to electric vehicles and large-scale energy storage projects due to low price and reliability. |
