Preparation of rhodium chloride

The invention relates to a preparation method for rhodium chloride, which is as follows: a U-shaped electrolytic cell is added with hydrochloric acid solution and rhodium powder raw material; both ends of an electrode is loaded with alternating current; the rhodium powder is partly dissolved in the hydrochloric acid and filtered; the residual rhodium powder is dissolved by mixing solution of hydrochloric acid and nitric acid; the obtained chlorine rhodium acid solution is concentrated and crystallized to obtain rhodium chloride. The preparation method has simple process and low cost; the production rate of rhodium is high and the prepared rhodium chloride has high purity.