Aluminum-based silicon carbon alloy and preparation method thereof, negative pole piece, all-solid-state battery and electric equipment

The invention relates to the technical field of solid-state batteries, in particular to an aluminum-based silicon carbon alloy and a preparation method thereof, a negative pole piece, an all-solid-state battery and electric equipment. The aluminum-based silicon-carbon alloy is mainly prepared from metal aluminum, silicon elementary substance, conductive carbon black and a binder through 3D printing, degreasing treatment and sintering. The mass ratio of the metal aluminum to the silicon elementary substance to the conductive carbon black is (5-7): (1-4): (1-3). According to the preparation method, powder containing metal aluminum, silicon elementary substance and conductive carbon black is fused and subjected to 3D printing forming by adopting a binder spray forming 3D printing technology, the Al-Si-C alloy is formed by utilizing a rapid solidification principle, the aluminum-based silicon carbon alloy which can be used for the negative electrode of the all-solid-state battery and has extremely high room-tempe