Electrochemical characterization of LFP working electrode in the shredded battery solution and in the lab-mixed solution: 

Figure A: Cyclic voltammetry performed inside of the lab-mixed solution at a scan rate of 1 mV/s. Data was directly copied from Ec-Lab software and normalized to the working electrode mass of 2.9 mg, and plotted as F/g. 
Figure B-C: Galvanostatic charging with potential limitation was performed at a specific current of 0.1 A/g in a potential window of -0.8 - 0.8 V in the lab-mixed solution. The capacity vs. cycle data was directly copied from EC-Lab and imported to Origin23b and plotted. The charging and discharging curve was also directly copied from EC-Lab and imported to Origin23b and plotted.
Origin23b plots for Figure A-C are found in the file "2,9mg_LFP_in_lab_shredded_battery_solution_CV+GCPL"

Figure D: Cyclic voltammetry performed inside of the shredded battery process water solution at a scan rate of 1 mV/s. Data was directly copied from Ec-Lab software and normalized to the working electrode mass of 2.9 mg, and plotted as F/g. 
Figure E-F: Galvanostatic charging with potential limitation was performed at a specific current of 0.1 A/g in a potential window of -0.8 - 0.8 V in the shredded battery solution. The capacity vs. cycle data was directly copied from EC-Lab and imported to Origin23b and plotted. The charging and discharging curve was also directly copied from EC-Lab and imported to Origin23b and plotted.
Origin23b plots for Figure A-C are found in the file "2,9mg_LFP_in_actual_shredded_battery_solution_CV+GCPL"
