▎ 摘　　要

NOVELTY - Preparing dendritic-free metal cathode carrier based on tip effect comprises (i) adding inorganic salt and 2,6-pyridinedicarboxylic acid to the ethanol solution, and performing stirring treatment under dark conditions to obtain a gel liquid, (ii) adding graphene oxide powder to gel liquid obtained in step (i), stirring uniformly under ultrasound, and freeze-drying to obtain aerogel, (iii) heating aerogel obtained in step (ii) for sintering to obtain a metal lithium carrier, and (iv) subjecting metal lithium carrier obtained in step (iii) to lithium deposition operation to obtain finished product. In the step (i), the inorganic salt is silver nitrate, tetrachloroauric acid, nickel(II) nitrate hexahydrate, zinc nitrate hexahydrate, and/or cobalt(II) nitrate hexahydrate. USE - The method is useful for preparing dendritic-free metal cathode carrier based on tip effect. ADVANTAGE - The carrier: has simple preparation method, convenient control, large output, and easy industrialization; and exhibits excellent electrochemical performance in the application of lithium/sodium/potassium metal batteries. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for dendritic-free metal cathode carrier based on tip effect prepared by the above mentioned method.