Lithiophilicity Acetylene Bonds Induced Nucleation and Deposition of Dendrite-Free Lithium Metal Anode

Lithium (Li) metal has been widely regarded as the most competitive candidate for next-generation-batteries material, while the growth of uncontrollable Li dendrite hinders its practical application. Herein, we developed a lithiophilicity strategy of utilizing acetylene bonds to induce the nucleation and deposition of dendrite-free Li metal anode through the acetylene bond enriched graphdiyne nanosheets. For the interaction between Li atoms and acetylene bonds, homogeneous Li nucleation and deposition are accelerated by the preferred method of the acetylene bonds induced nucleation and deposition (AIND). Moreover, results also verify the nanosheets structure of the graphdiyne based AIND layer could reduce interfacial resistance and effectively inhibit the disorder growth of Li dendrites for the formation of dendrite-free Li metal anode. The AIND method based Li anode could achieve a stable plating–stripping process for more than 1000 cycles under a current density of 2 mA cm–2 and exhibit long-term cycling performance with Li4Ti5O12 cathode. Those studies are provided a research strategy of regulating the distribution of acetylene bond in the lithiophilicity carbon layer to promote uniform nucleation and deposition of dendrite-free Li metal anode, which is expected to facilitate the application of Li anode for the next-generation rechargeable battery.