▎ 摘　　要

NOVELTY - Preparing three-dimensional porous material containing lithium alloy framework network comprises transferring liquid lithium-rich alloy to three-dimensional porous substrate by hot filling, cooling at room temperature for 5-1800 seconds so that liquid lithium-rich alloy phase separation or component segregation, and removing metal lithium, where obtaining lithium alloy phase of solid solution phase or intermetallic complex phase, and forming three-dimensional lithium alloy framework network structure of micro-nano scale in hole or hole surface of three-dimensional porous material in cooling, or separating metal lithium and uniformly distributing in lithium alloy three-dimensional framework and/or surface in cooling, or metal lithium alloy framework, three-dimensional porous framework are mutually complexes to form lithium alloy framework network and continuous self-supporting complex lithium cathode strip/foil material/film of three-dimensional porous substrate in cooling. USE - The method is useful for preparing three-dimensional porous material containing lithium alloy framework network. ADVANTAGE - The method: controls the phase separation or component segregation process of the high-temperature molten lithium-rich alloy in the interior and/or surface of the three-dimensional porous material; further divides the pores of the porous material into smaller and interpenetrating pores by micro-nano-sized three-dimensional lithium alloy framework network; does not participate the lithium alloy micro-nano framework in the charge and discharge reaction; only serves to expand the specific surface area; induces uniform deposition of lithium ions; inhibits the formation of lithium dendrites; forms a multi-scale framework structure with the three-dimensional porous substrate; improves the electrochemical performance of the cathode by synergistic effect; and fills the metal lithium in or on the lithium alloy framework to form a complex lithium cathode material containing lithium alloy framework network composed of lithium, lithium alloy framework, and three-dimensional porous material, where the metal lithium provides the reversible capacity of the battery charge and discharge reaction. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a three-dimensional porous material containing lithium alloy framework network prepared by above mentioned method; and (2) preparint the complex lithium cathode material.