Asymmetric battery having a semi-solid cathode and high energy density anode

摘要

Embodiments described herein relate generally to devices, systems and methods of producing high energy density batteries having a semi-solid cathode that is thicker than the anode. An electrochemical cell can include a positive electrode current collector, a negative electrode current collector and an ion-permeable membrane disposed between the positive electrode current collector and the negative electrode current collector. The ion-permeable membrane is spaced a first distance from the positive electrode current collector and at least partially defines a positive electroactive zone. The ion-permeable membrane is spaced a second distance from the negative electrode current collector and at least partially defines a negative electroactive zone. The second distance is less than the first distance. A semi-solid cathode that includes a suspension of an active material and a conductive material in a non-aqueous liquid electrolyte is disposed in the positive electroactive zone, and an anode is disposed in the negative electroactive zone.

主权项

1. An electrochemical cell, comprising:
a semi-solid cathode including a suspension of an active material and a conductive material in a non-aqueous liquid electrolyte, the semi-solid cathode having a capacity of about 150 mAh/g to about 200 mAh/g and a thickness in the range of about 250 μm to about 2,000 μm; an anode having a capacity in the range of about 700 mAh/g to about 1,200 mAh/g and a thickness in the range of about 30 μm to about 600 μm; and a separator disposed between the anode and the semi-solid cathode.