Electrolysis includes electrolysis of fused salts and aqueous solution electrolysis. In addition to providing a means of obtaining a metal directly from its ore, electrolysis also serves to purify a metal produced by some other process.

• 电解法包括盐溶电解和水溶液电解。电解法不仅提供了从矿石直接还原金属的手段，而且也可以用来纯化由其他方法提炼的金属。