Molten salt electrolytic cell with lithium collecting chamber

The invention discloses a molten salt electrolytic cell with a lithium collection chamber. The molten salt electrolytic cell comprises a graphite anode, a cathode body, an electrolytic cell cover, a cell chamber, cathode arms and a partition plate, and the cell chamber is composed of an inner container, an outer shell and a heat preservation layer between the inner container and the outer shell. Aplurality of cathode supports are arranged at the bottom of the inner side of the cell chamber, and the cathode body is fixed above the cathode supports; the cathode arms are arranged on the two sides of the cathode body and extend towards the two sides of the cell chamber; the electrolytic cell cover is arranged at the top of the cell chamber; the graphite anode penetrates through the electrolytic cell cover and is inserted into the cathode body; the partition plate is horizontally arranged at the position, located above the cathode body, in the cell chamber and divides the cell chamber intothe lithium collecting ch