Synthesis of γ-Graphyne and Its Applications in the Fields of Energy Storage and Conversion

Alkyne carbon material is a novel two-dimensional carbon allotrope with good electrical conductivity and high specific surface area. The porous structure composed of sp2- and sp-hybridized carbon promotes charge transfer and ion transport, which endows alkyne carbon material with broad application prospects in the field of energy storage and conversion. Theoretically, gamma-graphyne (gamma-GY) has the highest stability among the gamma-GY-like carbon materials due to its stable conjugated system and unique triangular pore structure, which promotes the ionic intercalation/ de-intercalation process in alkali metal ion batteries. Given its excellent semiconductor properties, gamma-GY is also an ideal candidate for photoelectrochemical and photocatalytic oxygen evolution and hydrogen evolution. Besides, the molecular framework and electron configuration of gamma-GY can be regulated by heteroatom doping or rational molecular structural design of organic precursors. This review summarized synthesis methods of.-GY and its applications in lithium ( sodium and potassium) ion batteries, electrocatalysis, and photocatalysis, then further proposed the challenges and opportunities in the energy field.

Automated summary

Alkyne carbon material is a promising two-dimensional carbon allotrope that exhibits good electrical conductivity and high specific surface area. It has broad application prospects in the field of energy storage and conversion, including lithium-ion batteries, electrocatalysis, and photocatalysis. The performance of alkyne carbon material can be further improved by controlling its molecular structure and electron configuration.