▎ 摘　　要

NOVELTY - Hydrophobic and functional nanosheet contained nano cellulose aerogel produced by e.g. producing nano cellulose precursor sol, adding boron nitride nanosheet, boron nitride nanotube, graphene, and carbon nanotubes, stirring, evenly dispersing to form nanosheet (nanotube) nano cellulose precursor sol, adding functional nano materials having excellent charging capability and hydrogen storage alloy having excellent hydrogen storage capability into nanosheet (nanotube) nano cellulose precursor sol including nanotubes, nanowires or nanopowders, stirring, evenly dispersing using sonication to obtain functional nanosheet (nanotube) nano cellulose precursor sol, (d) adding hydrophobic silane solution including methyl triethoxy silane or methyl trimethoxy silane into a solvent mixed with alcohol and water into functional nano sheet (nanotube) nano cellulose precursor sol, and stirring to obtain hydrophobic and functional nanosheet (nanotube) nano cellulose precursor sol, is claimed. USE - Used as hydrophobic and functional nanosheet contained nano cellulose aerogel. ADVANTAGE - The nano cellulose aerogel has high energy storage space, good charging function, high hydrogen storage space and better hydrogen storage function. DETAILED DESCRIPTION - Hydrophobic and functional nanosheet contained nano cellulose aerogel produced by (a) adding and stirring nano-size (5-100 nm) nano cellulose fiber into aqueous solution including lithium bromide aqueous solution, sodium hydroxide/urea aqueous solution or lithium hydroxide/urea aqueous solution to obtain nano cellulose precursor sol, (b) adding nanosheets (nanotubes) and surfactants, preferably boron nitride nanosheet, boron nitride nanotube, graphene, and carbon nanotubes into the nano cellulose precursor sol, stirring, evenly dispersing nanosheets (nanotube) in the nano cellulose precursor sol through ultrasonication to form nanosheet (nanotube) nano cellulose precursor sol, (c) adding functional nano materials having excellent charging capability including titanium dioxide, silicon or germanium and hydrogen storage alloy including magnesium-nickel, magnesium-iron, titanium-nickel, titanium-manganese, nickel-metal halide, iron-nickel, lanthanum-nickel-based, vanadium-titanium-chromium-based or titanium-niobium-chromium-based functional nano material having excellent hydrogen storage capability into nanosheet (nanotube) nano cellulose precursor sol including nanotubes, nanowires or nanopowders, stirring, evenly dispersing using sonication to obtain functional nanosheet (nanotube) nano cellulose precursor sol, (d) adding hydrophobic silane solution including methyl triethoxy silane or methyl trimethoxy silane into a solvent mixed with alcohol and water into functional nano sheet (nanotube) nano cellulose precursor sol, and stirring to obtain hydrophobic and functional nanosheet (nanotube) nano cellulose precursor sol, (e) stirring hydrophobic and functional nanosheet (nanotube) nano cellulose precursor sol while heating at 120 degrees C, adding the obtained product into a cold substrate or mold, allowing to stand at room temperature to solidify, and heating in an oven at 50-60 degrees C, and drying to obtain hydrophobic and functional nano sheet (nanotube) nano cellulose hydrogel, and (f) either: washing hydrophobic and functional nanosheet (nanotube) nano cellulose hydrogel with water, soaking in alcohol, and drying the obtained product through freeze drying method, supercritical drying method or atmospheric pressure drying method to form an aerogel in the form of a microporous membrane; or washing hydrophobic and functional nanosheet (nanotube) nano cellulose hydrogel with water, soaking in alcohol, fine grinding with a grinder, spraying with a nebulizer and freeze-drying at -25A degrees C to -80 degrees C with liquefied nitrogen to form microporous spherical shape aerogel particles having particle size of 10-100 mu m, adding functional nano materials having excellent charging capability and hydrogen storage alloy having excellent hydrogen storage capability into microporous membrane or spherical nanosheet (nanotube) nano cellulose aerogel, adding hydrophobic silane to obtain nano cellulose aerogel having excellent charging function, large hydrogen storage space and excellent hydrogen storage functions, is claimed. INDEPENDENT CLAIMS are also included for: (1) Hydrophobic and functional nanosheet (nanotubes) nano cellulose aerogels/substrate produced by closely bonding microporous hydrophobic and functional nanosheet (nanotube) nano cellulose aerogel to a desired substrate surface, preferably substrate fiber or substrate film to obtain nano cellulose aerogels/substrate having energy storage function and hydrogen storage functions; (2) hydrophobic and functional nanosheet (nanotube) nano cellulose aerogel coating liquid produced by adding hydrogel nano powder (nanotube) aerogel powder in which solvent is penetrated into coating liquid including inkjet ink or paint into solvent including N-methyl-2-pyrrolidone, dimethylformamide, tetrahydrofuran and/or alcohol; and (3) hydrophobic and functional nanosheet (nanotube) nano cellulose aerogel fiber produced by embedding nanocellulose aerogel nanopowders in nanosheet (nanotube) nanofiber.