| abstract |
The present invention relates to semi-solid electrodes with high rate capability. Embodiments described herein relate generally to electrochemical cells with high rate capability, and more particularly to devices, systems, and methods for fabricating high capacity, high rate capability batteries with thicker semisolid electrodes. In some embodiments, an electrochemical cell includes an anode and a semi-solid cathode. The semi-solid cathode includes a suspension of about 35% to about 75% by volume active material and about 0.5% to about 8% by volume conductive material in a non-aqueous liquid electrolyte. An ion permeable membrane is disposed between the anode and the semi-solid cathode. The semi-solid cathode has a thickness in the range of about 250 μm to about 2000 μm, and the electrochemical cell has an areal specific capacity of at least about 7 mAh/cm at a C-rate of C/4. In some embodiments, the semisolid cathode slurry has a mixing index of at least about 0.9. |