The present application relates to the field of
plasma, and discloses a method for
coating a blade
electrode, a blade
electrode, a sliding arc
plasma reactor and a method for
plasma conversion of
methane, the method comprising: using
atomic layer deposition to apply a
coating material to a blade
electrode in a sliding arc
plasma reactor to obtain a plating layer containing at least two single-layer
atomic layer deposition metal oxide films arranged in
layers on the surface of the blade electrode, the plating layer being a
semiconductor material, wherein the number of
layers of the plating layer is at least two, and the
coating material forming any two adjacent plating
layers is different. The scheme provided by the present application can modify the blade electrode by coating a
dielectric layer on the surface of the blade electrode, can directly and efficiently convert
methane into
ethylene, can reduce
energy consumption, can effectively inhibit
carbon deposition, can not produce CO2, can have high
ethylene yield, can have no risk of
combustion and explosion, and is more safe and
environmentally friendly.