Semi-solid electrodes having high rate capability

An electrochemical cell comprising:

• a semi-solid anode including a suspension of about 40% to about 75% by volume of a first active material in a first non-aqueous liquid electrolyte;
• a semi-solid cathode including a suspension of about 35% to about 75% by volume of a second active material and about 1% to about 8% by volume of a conductive material in a second non-aqueous liquid electrolyte;
• and
• an ion-permeable membrane disposed between the semi-solid anode and the semi-solid cathode;
• wherein the semi-solid anode and the semi-solid cathode each have a thickness in the range of about 250 μm, to about 2,000 μm, and
• wherein the electrochemical cell has an area specific capacity of at least 7 mAh/cm2 at a C-rate of C/4.

An electrochemical cell comprising

• an anode;
• a semi-solid cathode including a suspension of about 35% to about 75% by volume of an active material and about 1% to about 8% by volume of a conductive material in a non-aqueous liquid electrolyte;
• and
• an ion-permeable membrane disposed between the anode and the semi-solid cathode;
• wherein the semi-solid cathode has a thickness in the range of about 250 μm to about 2,000 μm, and
• wherein the electrochemical cell has an area specific capacity of at least 7 mAh/cm2 at a C-rate of C/2.

An electrochemical cell comprising:

• a semi-solid anode including a suspension of a first active material in a first non-aqueous liquid electrolyte;
• a semi-solid cathode including a suspension of about 35% to about 75% by volume of a second active material and about 1% to about 8% by volume of a conductive material in a second non-aqueous liquid electrolyte;
• and
• an ion-permeable membrane disposed between the semi-solid anode and the semi-solid cathode,
• wherein the semi-solid anode and the semi-solid cathode each have a thickness in the range of about 250 μm to about 2,000 μm, and
• wherein the electrochemical cell has an area specific capacity of at least 7 mAh/cm2 at a C-rate of C/2.