Precise construction of lithiophilic sites by diyne-linked phthalocyanine polymer for suppressing metallic lithium dendrite

Abstract

Uncontrolled growth of lithium dendrite is the key challenge that impedes the practical application of Li anode in the high-energy-density Li-metal battery. Precisely constructing lithiophilic active sites of the anode...

A phthalocyanine-based porous organic polymer for a lithium-ion battery anode

“…23,24 Due to their unique 18π electronic and designable structures, phthalocyanines have been considered to be perfect building blocks for conjugated porous materials 25,26 and have great application potential in the fields of catalysis, 27,28 energy storage, 29,30 and electronic devices. 31,32 In the phthalocyanine skeleton, the pyrrolic nitrogen atoms and aza nitrogen atoms have stronger electronegativity than carbon, 33,34 meanwhile, the sp-hybridized carbons have stronger electronegativity than sp 2 carbons, 35,36 resulting in good affinity and interactivity with Li + , which is probably beneficial for the improvement of lithium storage ability.…”