Apparatus and methods for inorganic electrolyte synthesis

A method comprising:

• providing argyrodite precursor particles, microwave susceptor media, and milling media in a reaction vessel;
• simultaneously rotating the reaction vessel while exposing the reaction vessel to microwaves to thereby heat the microwave susceptor media and reduce the size of the argyrodite precursor particles;
• heating the argyrodite precursor particles by contact with the microwave susceptor media;
• reacting the argyrodite precursor particles to form argyrodite particles;
• and
• reducing the size of the argyrodite particles.

A method comprising:

• providing precursor particles of a sulfide-containing solid electrolyte, microwave susceptor media, and milling media in a reaction vessel;
• simultaneously rotating the reaction vessel while exposing the reaction vessel to microwaves to thereby heat the microwave susceptor media and reduce the size of the precursor particles;
• heating the precursor particles by contact with the microwave susceptor media;
• reacting the precursor particles to form sulfide-containing solid electrolyte particles.