The present invention provides a paper ball-like graphene microsphere, a composite material thereof, and a preparation method therefor. Such paper ball-like graphene microspheres are obtained by chemically reducing graphene oxide microspheres to slowly remove oxygen-containing functional groups on the surface of the graphene oxide to avoid the volume expansion caused by rapid removal of the groups, thereby maintaining a tight bond between graphene sheets without separation; and removing the remaining small number of oxygen-containing functional groups and repairing defect structures in the graphene oxide sheets by means of high temperature treatment, such that the graphene structure becomes perfect at an ultrahigh temperature (2500 to 3000 C.) thereby further improving the bonding ability between the graphene sheets in the microspheres and achieving a dense structure.

An electrically conductive filler comprises particles having a base substrate and a conductive coating. In some embodiments, the base substrate is a metal, plastic, glass, natural or synthetic graphite, carbon, ceramics, fiber or fabric. In some embodiments, the coating provides improved electrical conductivity, and the coated particle has lower electrical resistance than the uncoated base particle. Other embodiments and methods of making and using the electrically conductive filler are also disclosed.

An electrically conductive filler comprises particles having a base substrate and a conductive coating. In some embodiments, the base substrate is a metal, plastic, glass, natural or synthetic graphite, carbon, ceramics, fiber or fabric. In some embodiments, the coating provides improved electrical conductivity, and the coated particle has lower electrical resistance than the uncoated base particle. Other embodiments and methods of making and using the electrically conductive filler are also disclosed.

Disclosed is a carbon nanoparticle-porous skeleton composite material, its composite with lithium metal, and their preparation methods and use. In the carbon nanoparticle-porous skeleton composite material, the porous skeleton is a carbon-based porous microsphere material with a diameter of 1 to 100 m or a porous metal material having internal pores with a micrometer-scale pore size distribution, and the carbon nanoparticles are distributed in the pores and on the surface of the carbon-based porous microsphere material or the porous metal material. The carbon nanoparticle-porous skeleton composite material is mixed with a molten lithium metal to form a lithium-carbon nanoparticle-porous skeleton composite material. The carbon nanoparticles present in the material can better conduct lithium ions during the battery cycle, thereby inhibiting the formation of lithium dendrites, and improving the safety and cycle stability of the battery.

A process for the production of at least one of amorphous carbon or graphite, preferably of carbon black, from atmospheric air, biogas or flue gas CO2 is given, including at least the following steps:

a) isolation of concentrated CO2 of a concentration of at least 50% v/v from atmospheric air, green house air or flue gas preferably by means of a cyclic adsorption/desorption process on amine-functionalized adsorbents;
b) conversion of said captured CO2 into a gaseous or liquid saturated or unsaturated hydrocarbon by hydrogenation:
c) cracking of said saturated or unsaturated hydrocarbon to at least one of amorphous carbon or graphite, preferably carbon black,
wherein the H2 resulting from step c) is at least partially used in the hydrogenation of step b).

A composition, includes: carbon black particles having a surface energy less than 5 mJ/m.sup.2; graphite particles having a BET surface area greater than 5 m.sup.2/g and more than about 50 graphitic layers, wherein the ratio of the carbon black particles to the graphite particles ranges from 0.25:1 to 4:1 by weight; and a liquid medium.

A composition, includes: carbon black particles having a surface energy less than 5 mJ/m.sup.2; graphite particles having a BET surface area greater than 5 m.sup.2/g and more than about 50 graphitic layers, wherein the ratio of the carbon black particles to the graphite particles ranges from 0.25:1 to 4:1 by weight; and a liquid medium.

A corrosion resistant material is described including a substrate, a first material including less than about 90% of an amino group or epoxy group, between about 0.05% and about 50% siloxane, between about 5% and about 80% nanoparticles, microparticles, or macroparticles, and between about 0.1% and about 5% of a first functionalized graphitic material, a second material including less than about 90% of a silyl group, between about 0.05% and about 50% siloxane, between about 5% and about 80% nanoparticles, microparticles, or macroparticles, and between about 0.1% and about 5% of a second functionalized graphitic material, and a third material including less than about 90% of an amino group or epoxy group and a silyl group, between about 0.05% and about 50% siloxane, between about 5% and about 80% nanoparticles, microparticles, or macroparticles, and between about 0.1% and about 5% of a third functionalized graphitic material.

A corrosion resistant material is described including a substrate, a first material including less than about 90% of an amino group or epoxy group, between about 0.05% and about 50% siloxane, between about 5% and about 80% nanoparticles, microparticles, or macroparticles, and between about 0.1% and about 5% of a first functionalized graphitic material, a second material including less than about 90% of a silyl group, between about 0.05% and about 50% siloxane, between about 5% and about 80% nanoparticles, microparticles, or macroparticles, and between about 0.1% and about 5% of a second functionalized graphitic material, and a third material including less than about 90% of an amino group or epoxy group and a silyl group, between about 0.05% and about 50% siloxane, between about 5% and about 80% nanoparticles, microparticles, or macroparticles, and between about 0.1% and about 5% of a third functionalized graphitic material.

An electrically conductive filler comprises particles having a base substrate and a conductive coating. In some embodiments, the base substrate is a metal, plastic, glass, natural or synthetic graphite, carbon, ceramics, fiber or fabric. In some embodiments, the coating provides improved electrical conductivity, and the coated particle has lower electrical resistance than the uncoated base particle. Other embodiments and methods of making and using the electrically conductive filler are also disclosed.