File Name : fig. s1.tif

Caption : fig. s1 overview and specification of the pilot-scale electrochemical lithium recovery system.

File Name : fig. s2.tif

Caption : fig. s2 (a) the electrode stack used in the primary recovery process and (b) the electrodes comprising the stack. (c) the electrochemical cell used in the secondary recovery process and (d) the electrode comprising the cell

File Name : fig. s3.tif

Caption : fig. s3 cyclic voltammogram of λ-mno<sub>2</sub> electrode (solution: 1 m licl, scan rate: 1 mv/s)