Provided is a simple, fast, scalable, and environmentally benign method of producing a graphene-enhanced cement or concrete material, the method comprising: (a) mixing multiple particles of a graphitic material and multiple particles of a cement or concrete ingredient to form a mixture in an impacting chamber of an energy impacting apparatus, wherein the impacting chamber optionally contains therein ball-milling media other than the multiple particles of a cement or concrete ingredient; (b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for peeling off graphene sheets from the particles of graphitic material and transferring the peeled graphene sheets to surfaces of the solid cement or concrete ingredient particles to produce particles of graphene-embraced or graphene-encapsulated cement or concrete ingredient particles inside the impacting chamber; and (c) recovering the graphene-embraced or graphene-encapsulated cement or concrete ingredient particles from the chamber.

The invention relates to electrotechnical industry, more particularly to lithium-ion batteries, and even more particularly to lithium-ion batteries with silicon-containing negative electrode (anode). The invention provides a method for producing an anode slurry (paste), an anode slurry (paste), a method for producing an anode for a lithium-ion battery, an anode for a lithium-ion battery, and a lithium-ion battery with a high initial specific capacity and a long cycle life with a large number of charge-discharge cycles over which the battery retains at least 80% of its initial capacity. This result becomes possible due to the presence in the anode material of bundles of single-walled and/or double-walled carbon nanotubes having a length of less than 5 m, together with bundles of single-walled and/or double-walled carbon nanotubes having a diameter of more than 500 nm and a length of more than 10 m.