▎ 摘　　要

NOVELTY - Graphene/black phosphorus nanosheet/phosphorus-containing ionic liquid composite airgel comprises graphene three-dimensional framework and black phosphorus nanosheet and phosphorus-containing ionic liquids supported on the graphene three-dimensional framework, where the black phosphorus nanosheet are surrounded by phosphorus-containing ionic liquid, and the graphene/black phosphorus nanosheet/ phosphorus-containing ionic liquid composite airgel has a three-dimensional porous network structure. USE - The composite airgel is useful in energy (aluminum ion batteries, solar cells and lithium-ion batteries), catalysis, water treatment, photoelectric and photothermal fields. ADVANTAGE - The composite airgel has high elasticity, high recovery, high conductivity and excellent stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene/black phosphorus nanosheet/phosphorus-containing ionic liquid composite airgel comprising (i) mixing a solution containing black phosphorus nanosheet and phosphorus-containing ionic liquid with aqueous graphene oxide solution and reducing agent to obtain mixed solution, (ii) heating mixed solution in a water bath under oxygen-free condition at a temperature of 75-100 degrees C for 1-3 hours and reacting to obtain graphene/black phosphorus nanosheet/phosphorus-containing ionic liquid composite wet gel, and (iii) mixing graphene/black phosphorus nanosheet/phosphorus-containing ionic liquid composite wet gel by hydrophilic organic solvent and deionized water to removing the excess reducing agent and then freezing and drying to obtain final product.