The invention discloses a
cement-based
electrode and a preparation method thereof, and a
cement-based battery, and the preparation method comprises the following steps: respectively preparing positive and negative
cement-based slurries through deposition of magnetic particles on the surface of carbon
fiber and dispersion of hydrogel: mixing a
graphite plate, cement, Ni deposited carbon
fiber, Ni-doped hydrogel, Ni (OH) and a water
reducing agent, and stirring to obtain a mixture; the preparation method comprises the following steps: preparing a cement-based positive
electrode by adjusting and controlling the orientation of fibers and hydrogel to be perpendicular to an
electrode plane, mixing a
graphite plate, cement, FeO deposited
carbon fibers, FeO-doped hydrogel, FeO and a water
reducing agent, injecting
slurry into a mold with a pre-embedded wire, placing the mold in a
numerical control magnetic field system, and adjusting and controlling the orientation of the fibers and hydrogel to be perpendicular to the electrode plane to obtain a cement-based negative electrode. Therefore, by
doping the
magnetic carbon fibers and the magnetic hydrogel and inducing the morphology of the directionally arranged
carbon fibers and the hydrogel through the
magnetic field, the key problem that the
electronic conductivity and the
ionic conductivity of the cement-based electrode are low is solved, and the storage capacity and the
mechanical property of the rechargeable cement-based battery are improved through the cooperation of the
magnetic carbon fibers and the magnetic hydrogel.